a couple printed ideas [Archive] - Page 6

Steve Melton

02-12-2020, 07:44 PM

printing an ABS test piece for these to determine hole roundness compensation. preparing for Nylon/Carbon fiber print. the original designer did a good job on these. nice and simple but for a single hole bolt mount they should be Nylon/Carbon. that's why we are doing it.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2702_zpsxfsubh7q.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2701_zpsox8tjnld.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2699_zpsqstz2mag.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2703_zpsibmey4mf.jpg

flysrv10

02-13-2020, 06:08 AM

with a soft silicone seal

https://oi1249.photobucket.com/albums/hh519/semelton500/cap4_zps2uivrgwl.png

Steve, I need to order one when you are ready to ship. Looking good.

Snowflake

02-13-2020, 07:28 AM

with a soft silicone seal

https://oi1249.photobucket.com/albums/hh519/semelton500/cap4_zps2uivrgwl.png
If you need these to truly "seal" against the skin, the screws will need to be on the *outside* of the O-ring... Otherwise you'll need O-rings under the screw heads as well.

William Slaughter

02-13-2020, 07:32 AM

I'm happy with this first print. fit's like a glove, slides in easily. I'll open it up .010 inch for some mfg. margin and tweak a print setting. I will add some custom ordered #6 inserts (due to arrive Monday) and it's done. I'm pleased with how this turned out and would be proud to have it in my aircraft.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2585_zpsmpyl5zfb.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2582_zpstgiwxarl.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2580_zps1erocxp2.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2586_zpskpu1l0nf.jpg

***
***

it's a compact design

https://oi1249.photobucket.com/albums/hh519/semelton500/cap3_zpscmirpaes.png
How about a version of this with the mounting flanges on the sides in order to minimize installed height? I would definitely be in the market for one of those.

Steve Melton

02-13-2020, 11:15 PM

flysrv10

02-14-2020, 06:07 AM

If you need these to truly "seal" against the skin, the screws will need to be on the *outside* of the O-ring... Otherwise you'll need O-rings under the screw heads as well.

I think if you use a nylon washer under the fasteners, you will be good.

Snowflake

02-14-2020, 07:43 AM

I think if you use a nylon washer under the fasteners, you will be good.
Maybe, but all it would take is a little piece of grit under one of them and you'd lose that seal. Perhaps better yet would be to just use a screw with a short enough head that there's still some recess left to the outside, and then fill the hole with silicone after install. Could easily pick it out later if needed, but this isn't likely to be something you'll remove regularly i'd guess.

CT Brietigam

02-14-2020, 07:00 PM

When I returned home today from the hangar I found the box from Steve with my new Dynon (horizontal) thirty degree radio mounts. They are absolutely incredible. From our first the conversation to the delivery of the finished product was less than three weeks. Extremely professional build and design. Overwhelming!!!!
Steve, thank you very much for your insight and design. The mounts will definitely bring the LCD radio face in direct line of sight and no more having to adjusting my seating position to read them!!
Chuck Brietigam
RV-6XXL

Steve Melton

02-15-2020, 08:04 PM

I tried to minimize water entrapment by raising the screw boss height. one could also leave a small gap on the aft side of the silicone seal to suck any water out. the underside is printed better. the one on the right is oversized 1/16th inch all around to hide a paint line. I don't expect much demand for these but rather it was a project to see if I could do it. now, I'm going back to watching cat videos' on youtube.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap5_zpsew5pxxem.png

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2727_zps4iwz30d8.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2728_zpszfflm5my.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2730_zps6id7jryg.jpg

Snowflake

02-16-2020, 09:32 AM

I tried to minimize water entrapment by raising the screw boss height. one could also leave a small gap on the aft side of the silicone seal to suck any water out.
Water entrapment is only part of it... Just having water run past that joint, it *will* get under the screw head and into the cavity below. Part of my job is designing IP-rated enclosures, we have to think about these things all the time. Thin O-Rings are nice in that they can bend around almost any profile, and could easily route around inside the screws.

Steve Melton

02-16-2020, 09:55 AM

Water entrapment is only part of it... Just having water run past that joint, it *will* get under the screw head and into the cavity below. Part of my job is designing IP-rated enclosures, we have to think about these things all the time. Thin O-Rings are nice in that they can bend around almost any profile, and could easily route around inside the screws.

I think it will be fine with a nylon washer under the screw head.

Steve Melton

02-16-2020, 10:12 AM

these are rated to 250F and have been fine so far in limited usage. I am trying to raise this to minimum of 300F using high temperature nylon that has heat deflection temperature of 383F. these require printing at over 600F. something new for me.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20191110_145655_zpsyvc68apf.jpg

flysrv10

02-16-2020, 01:03 PM

I think it will be fine with a nylon washer under the screw head.

Also, I recall that the GPS antenna itself comes with no provision for sealing anything. So this design is already far better.

Steve Melton

02-16-2020, 06:48 PM

nylon/carbon fiber. nylon is wet when it is printed. feels stiff and strong. I'm not sure how I'm going to test it for strength. perhaps attach it to a bar and apply load at the far edge. weight = 51 grams. printed solid at the bolt attachment.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2737_zpsulk9s50w.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2736_zpsvn2xfpsz.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2739_zpspnh5vng7.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2740_zpstx6ujtjt.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2741_zpscvdprtay.jpg

John-G

02-16-2020, 10:01 PM

Looks like the pedal extensions printed nicely Steve.

Snowflake

02-17-2020, 09:37 AM

Also, I recall that the GPS antenna itself comes with no provision for sealing anything. So this design is already far better.

That does make a huge difference... If water-resistance is really the consideration, not water-proofing, then that should be fine.

The only concern is that with an O-ring seal on the base, if water gets in through the screws it can't get out. Note that a nylon washer under a screw head won't meet an IP rating... If you get grit under the washer or screw head, that'll leave a channel for water and it will leak. O-rings will conform around grit and seal anyway.

Steve Melton

02-20-2020, 06:08 AM

flanges moved to the sides

https://oi1249.photobucket.com/albums/hh519/semelton500/cap4_zpsvatuvcth.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap5_zpsi7rxyaa8.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap6_zpsyjr0rteb.png

William Slaughter

02-20-2020, 06:33 AM

Steve Melton

02-20-2020, 10:12 AM

another printer arrived bringing our total to four. these are top of line Lulzbot printers.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2754_zpsiondypdk.jpg

Steve Melton

02-20-2020, 07:26 PM

around the neighborhood today. no bugs.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200220_175344_zpsyj4zhqvp.jpg

Ralph Inkster

02-21-2020, 11:40 AM

Steve
With the popularity of Uavionix TailBeacon installations, maybe look into the potential of a retro fit flange that could be mounted onto the top rudder fairing with a nav light mount flange similar to what you see on a C-172. This would put the TailBeacon antennas well out of range of harms way on taildragger installations.
Just a thought...

Steve Melton

02-22-2020, 05:25 AM

good idea. those tail beacons are popular. who would have thought they could squeeze all the functionality into such a small package.

Steve Melton

02-22-2020, 06:10 AM

the previous version worked well when placed in the middle of the opening but difficult to install. I thought I would attempt to attach them to the inlet baffle seal screws to ease the installation. I need these since flying yesterday at -16C my oil temp was 145F with the cooler taped off.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap2_zpsvml5iqyt.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap3_zpsmqlrqmwy.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap4_zpspg5x5qvg.png

Steve Melton

02-22-2020, 07:17 PM

one is ABS the other is Nylon/Carbon

I not really sure how to test these but I'll give it a try.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2769_zpsuegncxoc.jpg

flysrv10

02-23-2020, 03:08 PM

top side is OK. inside upper surface is not so good but I knew it would not be but better than I thought. minimum depth measurement = 11/16 inch or .6875 inch. these can be made to any height. inside rectangular measurement is 2.0 inch x 2.8 inch. ASA UV resistant plastic. soft silicone foam seal.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2706_zps7pfhrccq.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2705_zps9fn7vqbc.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2707_zpsxsuezcqa.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2708_zpskwlf4knh.jpg

Just installed my GPS antenna cover. The shell that Steve printed, hides Uavionix GPS antenna puck. I ordered an oversize shell and it covered old/new paint lines very well. The pics tell the story.

Thanks Steve.

https://photos.app.goo.gl/KuBtuVbtDWrKuwXY7
https://photos.app.goo.gl/TYv9MWMi1ua8vSKY9
https://photos.app.goo.gl/QzpR9bghmQDyNqXr5
https://photos.app.goo.gl/8Bz6WBs3HzS52Ai16

Steve Melton

02-23-2020, 05:55 PM

OK, I think I am going to like this for sub freezing flying. only a fit check. I still need to do some frequency analysis for propeller passing frequency. hey, this may actually work.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200223_183532_zpsfdhqhkbd.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200223_183339_zpsjwervabu.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200223_184508_zpsa863xka7.jpg

Steve Melton

02-24-2020, 04:39 AM

Starboard side needs to be shorter and I bent it upwards to follow the baffle. temperatures are beginning to warm so I need to get this done. part weight = 42 grams. essentially hollow and thin. the flange is solid.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap5_zpshqd4k1xg.png

Steve Melton

02-25-2020, 06:04 PM

Stress and frequency analysis. Some changes made per the frequency analysis; flange increased .025 inch, aft region decreased in length by 0.5 inch. weight of one piece = 30 grams. flange is solid. Overall, I believe this is a better mount configuration than when it was mounted from above because the during climb some air can still pass above and provide cooling but when you are straight and level at higher speed the blockage is there. Testing will determine whether I like it or not.

Load analysis:
1 psi applied to the fwd side developed 0.2 ksi at the bolt holes. Low stress as expected.

**

Frequency analysis:
The goal is for the cowl air dam natural frequency response to be above the blade passing frequency to eliminate any response from pressure pulses coming from the blades.

Engine speed = 2700 rpm, 2700/60 = 45 Hz
2 blades per rev, 2*45 = 90 Hz
3 blades per rev, 3*45 = 135 Hz

Air dam widget frequencies:
1st response = 154 Hz, 71% above 2/rev, 14% above 3/rev
2nd response = 386 Hz
etc.

Conservative boundary conditions, essentially pinched at the holes, and 1.2 factor on the density.

Port side

https://oi1249.photobucket.com/albums/hh519/semelton500/cap11_zpsecn9ku5f.png

Starboard side

https://oi1249.photobucket.com/albums/hh519/semelton500/cap12_zpsn4prxtd8.png

Boundary conditions

https://oi1249.photobucket.com/albums/hh519/semelton500/cap9_zpsqhkhhsgm.png

**

applied pressure and stress

https://oi1249.photobucket.com/albums/hh519/semelton500/cap7_zpspooxbvyd.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap8_zpssrn2coo0.png

**

Frequency response

https://oi1249.photobucket.com/albums/hh519/semelton500/cap10_zpsxvelvyya.png

**

https://oi1249.photobucket.com/albums/hh519/semelton500/cap13_zpsqbckgxvl.png

Steve Melton

02-25-2020, 06:29 PM

some prints

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2821_zpsenla91an.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2820_zps1smcd9a4.jpg

Steve Melton

02-27-2020, 08:35 PM

-8C predicted Saturday morning, ready to rock this party and blast out of here. 5 minute install for Winter Air Dam.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200227_192820_zpsbhww5e8u.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200227_204726_zpsryvjawqm.jpg

Steve Melton

02-29-2020, 10:36 AM

tested this AM at -13C and it was very good. I'll fly again this evening and then post some results.

Steve Melton

02-29-2020, 10:39 AM

Bill Duffy sent a video and added photos and instructions for a perfectly secure sliding canopy. He is coming at this from another direction than the plans.

See the movie here on RVPlasticParts.com. It's include in the drill guide product page.

https://video.wixstatic.com/video/42b789_54fe084561a1433c8c7152deb5e7052d/1080p/mp4/file.mp4

detailed photos of the install here:

https://www.rvplasticparts.com/product-page/rv-7-and-rv-9-slider-canopy-block-drill-guide

Steve Melton

02-29-2020, 11:40 AM

I can feel it. Snow melt from my roof on perfectly clear day after a flight.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2848_zpskhhjwckq.jpg

Steve Melton

02-29-2020, 07:48 PM

It took all Winter to get to this. I think I have something I can use. It turned out to be more like a post.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2841_zpskkqvrvl7.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2833_zpsuvzm1apb.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2842_zpskz5ueqbq.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2862_zpshgjqbgue.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2856_zps13fza81p.jpg

Bill_H

03-02-2020, 02:32 PM

Steve - I read a comment somewhere that brushing the printed parts with a clear epoxy made them more durable. Your opinion?

Bill H.

Steve Melton

03-02-2020, 06:09 PM

Steve - I read a comment somewhere that brushing the printed parts with a clear epoxy made them more durable. Your opinion?

Bill H.

it's possible that a coat of clear epoxy may be more durable. however, I prefer the simple route and just fly them like they are. no printed parts on my aircraft are painted for up to three years and they are doing fine. my aircraft is hangared except when away. ASA plastic holds up very well to UV. ABS can be susceptible to UV and you could spray on a coat of UV enamel paint if desired, Rust-Oleum brand or similar that does not contain acetone.

David Paule

03-02-2020, 06:28 PM

Clear epoxy is not necessarily a UV blocker. Perhaps something like an exterior polyurethane might be better.

Dave

Snowflake

03-03-2020, 07:56 AM

Steve - I read a comment somewhere that brushing the printed parts with a clear epoxy made them more durable.
It would have to be pretty watery epoxy to penetrate the part. While 3D printed parts are slightly porous, the holes are not large. The most i'd expect a coat of epoxy to do is smooth the printing lines somewhat, and then give you a tougher "skin" as thick as the epoxy layer after it hardens.

Steve Melton

03-04-2020, 06:13 AM

per the plans. also in 6 inch.

Revised plans are at "www.vansaircraft.com/wp-content/uploads/2019/01/RV-14_38.pdf" and the block dimensions are on page 38-41.

https://oi1249.photobucket.com/albums/hh519/semelton500/3%20inch_zpspvlzhtwr.png

https://oi1249.photobucket.com/albums/hh519/semelton500/xsect_3_zpsprmmsaua.png

**********

6 inch long printed sanding block. it's nice and feels good in the hand.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2873_zpsdesx7wgh.jpg

Steve Melton

03-06-2020, 10:53 AM

John Salak sent me some RV-12 models he uses.

antenna tip safety cover
https://oi1249.photobucket.com/albums/hh519/semelton500/Antenna%20tip%20safety%20cover_zpsymmwasse.png

step tube plug
https://oi1249.photobucket.com/albums/hh519/semelton500/Step%20tube%20plug_zpsbkhh1kzg.png

rudder pedal extension
https://oi1249.photobucket.com/albums/hh519/semelton500/RV-12%20Rudder%20Pedal%201.5%20inch_zpsf0qhqcgb.png

stall vane cover
https://oi1249.photobucket.com/albums/hh519/semelton500/stall%20vane%20cover_zps5umtbuux.png

Earth-X ion batter tie down
https://oi1249.photobucket.com/albums/hh519/semelton500/Earth-X%20LiOn%20Battery%20Hold%20Down_zpsb5rgrrsu.png

Vent knob - left side
https://oi1249.photobucket.com/albums/hh519/semelton500/Vent%20knob%20-%20left%20side_zps2zpihqcm.png

Steve Melton

03-07-2020, 04:28 PM

temperature = 3C at 4K feet. I tested the 1.0 inch wide cowl air dams by flying to Lunken airport and met up with some helios. engine and oil temperatures were just right. the time to swap from 1.5 to 1.0 inch air dams measured on the clock = 4 minutes. a perfect day all around.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200307_143132_zpsz8m1oriu.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200307_132111_zps3rykayou.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200307_132131_zpsjunkh5l1.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200307_132201_zpsur283qxs.jpg

Vlad

03-07-2020, 07:01 PM

Received your preheater muff adapter Steve thanks! Will report on performance as soon as cold weather returns :)

Steve Melton

03-07-2020, 07:02 PM

good deal. we made it thru another Winter.

Steve Melton

03-08-2020, 08:02 PM

kicking this around this evening. the flex is in the flat portion at the base.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap2_zpsslzkvzce.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap1_zpskbnfvwhf.png

*********

tuned the design for desired pinch force

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2875_zpsk9oxbmef.jpg

Steve Melton

03-20-2020, 12:53 PM

I wondered if it would be possible to preheat with chimney effect heat. it seems to work well for the accessory area, within 10 minutes it is warm but requires 20 minutes to get the heat under the cowl above the cylinders. best if operating 30+ minutes. overall, I like it and plan to field test it soon. you can place you hand on top of the metal duct when operating. estimate 150F.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200320_112621_zpsathy98pa.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200320_111806_zps331ojggq.jpg

***
***

everything stuffed inside, burner, 2 propane cells

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200320_124832_zpsvnyswxja.jpg

Steve Melton

03-22-2020, 07:25 PM

I like this pre-heater. Simple, lightweight and can handle some wind. The difficult part was getting the stove lit in the wind. It took us a couple minutes to get the flame going. I think I can make a round metal cylinder to protect the flame to make that easier.

We cleared the frost from the wings with a t-shirt because it was a very dry frost and was easy to remove.

Outside air temp = 20F
Pre-heater time = 40 minutes ( I think I could have increased the stove flame but I was being conservative, engine compartment warmed slowly but came up to a nice temperature, battery cranked it very well)
Started on the 4th blade. No primer installed. Two pumps on the throttle.
Taxied down the runway to clear the birds before takeoff.

The Money behind in the photo had been there a week and there had been some rain. He tried to sump his tanks but frozen water in the right tank caused the tank to leak and he was trying to catch the fuel in the gas can. His gas caps were also frozen. He has killer caps like RV's but bigger diameter, full of ice. He was grounded. A nice strip but no facilities there.

Fishing for Steelhead at Perre Marquette River Lodge. The Lodge was not busy. Only 8 others there with us. We ate everyone else's food that was being offered, such as Buck jalapeno poppers. Crazy good. Amanda and I had a blast. We come back and find Ohio is a "Shelter in Place" state.

https://oi1249.photobucket.com/albums/hh519/semelton500/map_zpsygnjeq4i.png

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200322_084758_zps9wg7a0qs.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200322_090429_zpsmsfc3rx7.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200321_203414_zps0ktp0m6x.jpg

Steve Melton

03-22-2020, 09:06 PM

added to website:

1 1/8 inch - 12 TPI for Lycoming Thunderbolt. who would have thought they would have changed from their standard 1 1/4 inch... must be some reason.

1 inch -12 TPI for possibly some older engines.

a full line up of dehydrator cap connections.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2607_zpsdtbqd0m1.jpg

Stockmanreef

03-26-2020, 05:54 AM

I have not read this entire thread, so I hope that my idea has not been posted already. I have a part I would like for building--a gig. I have never done 3D printing, so obviously I don't know how to make a CAD drawing to use on a 3D printer.

Idea:
I am at the point that I am putting on the snorkel. There is a bunch of measuring to do to line up the snorkel with the fuel controller (I am using an FM-150). I thought that is would be much simpler to have a part made that inserted into the snorkel (61mm) and then transitions to the inner diameter of the FM-150 (66 mm). Then use this part as a gig to line up the snorkel with the fuel controller. The snorkel hole is not quite round (61-63 mm), but I figure using the min diameter would work.

This way I don't have to figure out if the two holes are concentric by the method described in the plans.

Does this make sense and does this seem like a reasonable idea?

Maybe someone here would like to make one. If not I can have my daughter or one of her friends make the design and I can print it.

Steve Melton

03-26-2020, 09:34 AM

JTJones

03-26-2020, 10:39 AM

When building my -14 we used a piece of PVC as a jig to hold the snorkel in line with the FM-150 throttle body. We bought a PVC coupling at Home Depot. It was slightly too big so we had to use sandpaper to reduce its diameter a bit to make it fit.

Stockmanreef

03-26-2020, 02:25 PM

well, the part is complete and "fit" on the first try. I measured diameters and guessed at the length. sent to my daughter drawing that she converted to CAD drawing--30 minutes later I had the STL file, and then a colleagued printed. I just had to cut out a portion to allow the fitting to slide into the fuel controller. 10 minutes of work on my part on the computer drawing and not bloody filing.

Steve Melton

04-01-2020, 12:26 PM

updating my dehydrator connection to a direct barb instead of pipe nipple to barb

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2941_zpsbxmlfnws.jpg

Steve Melton

04-01-2020, 12:33 PM

printing an entire roll of filament for these. version 2 design, top piece has .01 inch increased thickness at the overlap and chamfers at the top and bottom for a nice interlock fit. This is just a subtle design change. I still use version 1 on my aircraft. material is nylon / carbon fiber. Same design update to the 3 wire version.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2939_zpsqtytiwwo.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN2945_zpsfjiqdib5.jpg

Steve Melton

04-01-2020, 12:52 PM

In January I weighed 197 lbs which is heavy for me. I am 59 yrs old and used to have a slim build but I was getting a belly and overall didn't feel as well as I used to. More trouble getting up from the concrete floor. I decided to set a goal and run a half marathon this year as motivation. I started running and watching what I ate and drinking less beer.... but still drinking beer but less often. Today my weight is 179.0 lb and I feel much better and more nimble. I'll take it down to 175 and hold there for the Summer and then by the Fall I'll take it to 169 lb for race day. Hey, I can carry another 20 lbs of cargo and there is a huge gap now between my belly and the stick.

David Paule

04-01-2020, 12:57 PM

Good job. You're doing one of the harder things.... and I don't mean the half marathon.

Dave

Steve Melton

04-01-2020, 01:04 PM

Good job. You're doing one of the harder things.... and I don't mean the half marathon.

Dave

thx Dave, I appreciate that. The first two months were really tough. Feeling weak but getting in a few miles. Now it is easier. My legs are stronger and I'm lighter. It's sort of like building an airplane. Really tough at first but you get stronger and find a rhythm.

Paul K

04-01-2020, 07:29 PM

Good job Steve!

I was on a medication a couple of years ago that jumped my weight up to 210! I have been a runner most of my life so this was really difficult and in addition hard to get into my 7. Been running and training for a marathon this spring and finally got my weight back to 160 where it belongs but they canceled the marathon!

On the bright side, I can get in and out of the 7 with ease and I can haul more baggage when the wife and I travel (not doing much of that lately either). Bahamas canceled two weeks ago.

Keep working to keep healthy!

Steve Melton

04-01-2020, 07:42 PM

YellowJacket RV9

04-01-2020, 07:48 PM

I have been playing around and made up a cup holder for between the seats just aft of the fuel selector, as well as a small tray to go between the two seats just forward of the flap motor cover. The cup holder is two pieces, with a lid that snaps onto it that fits a can as well as a couple of pens. Or the lid can come off and it is just more storage. The cup holder is held in with two of the seat pan screws, and the tray with some Velcro strips.

https://lh3.googleusercontent.com/mph6aJnropa4ddTvFx-DVboyNg_lJfmwnT_fCmKMvlz5KBXSfNKxfvS0OAqX_VDDlD3dr Oa5EbxmfSMyYSNAkLWYeNx2BfUWroswqVucPQ07rakDkc4qYlk 2tpydBUsW9qDXyDGOCxPI5QM9IVC4ilQDYqZs1jfl7hQyeQoRk ioGRxj3MpOV7ta8mwtWIyW5wpntuFbXm_daW3zs-liYw5CIliafWnDOBG4q2QCYH7sOvIropYL7VZAnEht5tTmt6CS Uw0qqgGSuSaJzHQEGhUQRE0PTJPc5iTjCDM_Hr_1SmamdzlVnA Gr6A-V8egnBpwu2Pr00KilepCuW-eTmRbbu9xafNiimdBwDBLumPx7rq2HL9cgwyUnNtoViTFlU613 GDd7ZBg5_UiaA7NvLlsj34xP4dKUSLvPDuNn8bMv5Ku7Qrujf9 ZMMGaFn7vIZaCaoftWDCF-aNzHxgHWmeapIclnYR1Qg0jvDVQHPlAPLB6r9VEDWWILke_ov2 MWR2ZUrwlWKFucfmHN3MfLcVOA9gWVJO3LnXgPJqUTm58KwTSm 70Kvo1tB7USGm5U3R9ryjxnIcQ8MeUppbNts7yp18cZlZfJagE IZVaWfLctuGje-vefJF8HLjQPzVn3poOvmUcCI-uLKAcaJCiVAytEnXNsmugpkwxRH_EkmpLEnZN0ujfTMSrTLuA2 T1WuFrn-psEtrXWQS1jZ3Imv9RcfaMgUTdubf0fiZQXA_nK00VDR6Ki0II nBQ=w800-no

https://lh3.googleusercontent.com/7fuihgxnWz5Yup4dCOr364UFnmnQW8iDm_ycvSt8KE5SmE53OT Z8P-VfI15QjY_i_QNo7Z9MCjW8iueQgoNyr61Pswx9warWabvL43Xe GiVg5u4L7YRFJj6VtSSCBgFPdB1aYpjWeXCZA60zC1p6PYW8Hj kOGwDxlE2fJLLW57CnVDXLxUfvPnwo8SYO5X11-vvi5EDdEXMbeTbSARPN1UWZaCLdsvi87tTWaPvVFhhyr6ROwdi zWZ4mEA5Pr8_lSAz0VghRDnGj-a8eWZIQILMwos_JcLoF6dZgJAnnAWTw5gULixAiREwxoual0Vu RUhlaOamWB32aYhqya4C1o724kOk0qfzBtZkw0ubr4kQ0OmQXc _dHViCGcAJfH8OwjklQeFr_b4YkHuS4eCnaXJQzdxxq0H6nWue 3a40H69d1M836nKse3cKeU6ulQCLw9R920TrDziD8tnTdbvBIB mTi4mIa8vn4ZmvMLqNbMlzL7HlpxnDb_-bruvZlVXRvZENbxtJEk4QPJa6q5mxjqiiEYj8WZlipZaBYGgjE MPx2VRxmQyE0RZDP1tdUwBi6UlsYRBIAG0C0y9hV2rG3HEeykn iYDCwc3DvsAZAqa3OWiNcBf_pKl22susyzjOxVYqmrklXnZIcy gqzY20EDzBhFFrqnIwSlkpTz1hCzr2hTAJK5iaV48rz-8QqbEOg1oBEwkOcmQ1HaamK9eGB-VIUqQ85Vy04Yw25bQnJUM269sgqzyp-yQWU=w800-no

Steve Melton

04-01-2020, 08:04 PM

I like it.

Scott Hersha

04-01-2020, 08:15 PM

Steve,
What a whimp - 59? Wait until you?re 69, then lets see you loose that weight. I was where you are now, but somewhere in my 60?s it became more difficult, then eventually impossible, with joint pain, etc..... When you?re north of 65 and you put on 5 pounds, the only way to loose it is to cut off a limb. Not willing to do that just yet. I envy you, young man. At this point, the only way to lower my OEW is to start removing equipment from my plane, and as you know, there?s not much room for me to do that... Good luck with your half marathon. I used to run religiously - for 25+ years. Now I need both knees replaced, and you know what they replace them with? Stainless Steel. There goes my OEW! Maybe you can print me a couple knee joints. Anything to save a knot.

Steve Melton

04-01-2020, 08:22 PM

Steve,
What a whimp - 59? Wait until you’re 69, then lets see you loose that weight. I was where you are now, but somewhere in my 60’s it became more difficult, then eventually impossible, with joint pain, etc..... When you’re north of 65 and you put on 5 pounds, the only way to loose it is to cut off a limb. Not willing to do that just yet. I envy you, young man. At this point, the only way to lower my OEW is to start removing equipment from my plane, and as you know, there’s not much room for me to do that... Good luck with your half marathon. I used to run religiously - for 25+ years. Now I need both knees replaced, and you know what they replace them with? Stainless Steel. There goes my OEW! Maybe you can print me a couple knee joints. Anything to save a knot.

But I don't want to remove any equipment from my airplane. I need it all. If I needed a new knee, I would have to lose the espresso machine. If it were a hip then there goes the toaster. How would my wife toast her bagels?

But I will say the belly is the last to go. Why is that? It always wasn't that way for me.

Snowflake

04-02-2020, 08:14 AM

The belly is also the first to see the added weight, it seems. It's a lot harder to lose weight the older you get, so the best defense against high weight in old age is to start with a lower weight going in.

I've worked my weight down from a peak of 195 a couple of years ago to 181 now, sort-of trying to get to 170 but i'd be happy with 175. I haven't really changed my diet at all, but I have reduced the portion sizes slightly in less-active months.

I've been swimming in winter, Cycling in summer until last winter. Switched to a stationary trainer for indoor cycling last winter. Worked better for weight maintenance, and when I started riding outdoors again this year I found I hadn't lost my hill-climbing ability like I did in previous years when i'd been swimming instead. Didn't do much for my upper body though, so in January I started a push-up challenge... Two a day for a week, then add two more every week. I'm now up to 28 a day, and it's been getting easier every week. Helps strengthen the neck muscles for cycling as well.

Still waiting to hear if this year's local Grand Fondo (160km) ride in August will be cancelled... Did the 100km last year and hardly felt it.

Steve Melton

04-02-2020, 03:56 PM

I hope we can do this again this year.

https://oi1249.photobucket.com/albums/hh519/semelton500/Oshkosh%202018%20x%20800_zpsufjtgmwm.png

Steve Melton

04-16-2020, 03:35 PM

version for 8 mm Outside Diameter Lead

https://oi1249.photobucket.com/albums/hh519/semelton500/8mm%20wire_zpszhuoyktm.png

Steve Melton

04-19-2020, 10:38 AM

prototype for iFly mount to understand it this can be printed successfully. if so, it could open up some opportunity for panel mount dimension custom sizes.

******

the beginning stages.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap2_zpshqjbgyut.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap3_zpsyhrnztex.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap4_zpsq9t02a30.png

***********************

getting closer. the red marks the interference location areas. stresses and load deflections look good by analysis. the question is how well it will print. it's big. this iFLY 740 panel mount is sized as a drop in for my previous AVMAP panel mount.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap6_zpsnymwr0fd.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap5_zps2biayr3x.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap7_zpstt8zndau.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap8_zpsrmunuf74.png

**

10lb opening load = 2.5 ksi max stress, stress is distributed into the back plate, lateral deflection of the lock is .18 inch.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap9_zpsodbrotnh.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap10_zpsljnlvt34.png

**

in the latch open condition the edges droop inwards .010 inch and close the slot gap, so have a large enough gap to clear. mine are .10 inch.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap11_zpsnvaxab7i.png

Steve Melton

04-22-2020, 09:18 AM

when you print long objects it can be a challenge. the material cools and shrinks layer by layer so that when the prints become taller the shrink stress accumulates and tends to lift the part from the board. I am attempting to simulate that effect by analysis and apply relief cuts where beneficial. this analysis showed benefit for the cuts without affecting part function. I have not attempted to print this yet because it's a large print and I'm taking my time to look at it completely.

**
applied thermal gradient
https://oi1249.photobucket.com/albums/hh519/semelton500/cap13_zpskopxgl3e.png

**
lifting stress from the board
https://oi1249.photobucket.com/albums/hh519/semelton500/cap14_zpsssoqebuu.png

Steve Melton

04-26-2020, 09:59 AM

RV-9 flap bracket fairings. position 4, 5 and 6. a 12 hour print.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3002_zps06aw5qpz.jpg

**

nice parts that do their job under the wing.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3008_zpsa2kptpt4.jpg

Steve Melton

04-26-2020, 05:17 PM

I don't always remember the knot tie after a long flight... is it over / under, or the other way? so, I made a link to eliminate the knot connection. it uses cam pins. once the rope is tied properly then the link is all that is needed. analysis shows the link is good to 1000 lbs, I pulled the link in a test to 400 lb and then the metal eye bolt failed. the photos of the link are after the pull test.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3030_zpsztmp45at.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3020_zps9yw3v2zx.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3013_zpsl7ncgvjh.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3014_zpsvy9qy3pm.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3009_zps6rb3dzbg.jpg

Snowflake

04-27-2020, 07:49 AM

Simplify... Bolt one side permanently to the rope, and only use one cam pin!

Steve Melton

04-27-2020, 03:44 PM

logic would say that's correct but it works better with two cam pins when working with it. bring the top link straight on the two pins.

flysrv10

04-28-2020, 07:35 AM

Steve, How about fairing for TXP antennas with the ball at the end? See this http://www.vansairforce.com/community/showthread.php?t=181835

Bill Boyd

04-28-2020, 08:39 AM

Don't distract the man.

You're flying a -10? We're in much more urgent need of flap and aileron hinge fairings like Steve makes for other models than a fairing for a tiny little rod antenna! :D

flysrv10

04-28-2020, 08:42 AM

Don't distract the man.

You're flying a -10? We're in much more urgent need of flap and aileron hinge fairings like Steve makes for other models than a fairing for a tiny little rod antenna! :D

I agree with Bill but every little helps. I have bent this antenna couple of times and a fairing would protect it. Blade antenna is one solution but don?t feel like drilling more holes.

Steve Melton

04-28-2020, 09:59 AM

Steve, How about fairing for TXP antennas with the ball at the end? See this http://www.vansairforce.com/community/showthread.php?t=181835

I have considered a fairing for that antenna before but it would require a pin to keep it straight and hole in the fuse. by the time to you do that it is better to get a blade antenna. you will get more transmission power from a blade style and it will take some bumps.

koupster

04-28-2020, 11:38 AM

Steve Melton

04-28-2020, 06:13 PM

Steve,

How about a flap switch handle such as:
https://www.aircraftspruce.com/catalog/appages/flaphandle.php?clickkey=4250076

If made in two pieces, it wouldn't have to rely on set screws to center on the narrower part of the toggle, but could exactly fit the taper of the toggle.

Cheers, David
RV-6A KBTF

you know, I asked Amanda to make one for me but then she bugged out. it's a good idea. I have an idea for one with set screws. I'll make one and see what you think of it.
i'

Steve Melton

04-29-2020, 10:50 AM

not too bad. the plastic is ASA so it will resist UV rays. looks like metal and even feels like metal. big set screws that give a good bite. my experience with set screws like this is that no thread lock is needed. 1/4 turn after contact is all that is needed. the toggle switch swivels and you don't want that. use one than is guided vertically. this toggle switch max lever diameter = .240 inch. these are inexpensive. if I ever need to replace the one in my aircraft this is what I plan to use. to set the lever alignment, loosen one set screw and tighten the other, very easy to do. I'll add a couple styles with taper. this is a strong part.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3041_zpse8cl4s2p.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3043_zpsuje7qpdo.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/semelton500001/straight_zpso0ht1hdh.png

https://oi1249.photobucket.com/albums/hh519/semelton500/semelton500001/spline_zpsosmxzy0x.png

https://oi1249.photobucket.com/albums/hh519/semelton500/semelton500001/duckbill_zpsmuua5pxt.png

https://oi1249.photobucket.com/albums/hh519/semelton500/duckbill%20zeb_zps3ohqxfos.png

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3045_zpsq5h3xkp7.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3047_zpsnoc67o1u.jpg

Steve Melton

05-02-2020, 08:19 AM

The first concept print proves this is possible. The part is very strong and pull testing the latch will give some data to compare to the analysis but it feels right by hand force. some study and correction to the locking feature dimensions is required to have a tighter fit. I am totally pleased with this result. Hey, these will be cheaper than existing, custom dimensions are possible, and best of all, it's not made in China. you could probably buy both an iFly 740 and panel dock for total $700 or so.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3057_zpspblds1xd.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3060_zpsszv4aqq8.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3062_zpsboa3cyov.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/cap15_zpsckemfuxe.png

*********

NOT MADE by Fong Chen Plastics!

https://oi1249.photobucket.com/albums/hh519/semelton500/Fong%20Chen%20Plastic_zpsuh8ezxk5.png

Snowflake

05-02-2020, 08:55 AM

I have considered a fairing for that antenna before but it would require a pin to keep it straight and hole in the fuse. by the time to you do that it is better to get a blade antenna. you will get more transmission power from a blade style and it will take some bumps.

Steve, how about using a strip of 3M VHB tape to apply it? The Sharkfin antenna on my Mazda is held on with VHB. No alignment pins needed, nor additional holes through the skin.

Steve Melton

05-02-2020, 09:21 AM

Steve, how about using a strip of 3M VHB tape to apply it? The Sharkfin antenna on my Mazda is held on with VHB. No alignment pins needed, nor additional holes through the skin.

Trying to keep an open mind on this. I suppose really good tape may work. That an air pulsing environment from the prop wash. If you need to remove the fairing it could be a pain. Anyone else have thoughts on about taping a fairing as a semi-permanent installation?

David Paule

05-02-2020, 09:46 AM

Sure. Make the fairing in two parts. The first part, thin and small, would be a taped-on attachment device. The second part is an actual fairing that clips on but is removable somehow (perhaps with a firm straight pull).

The fairing part would protect the attachment part from the environment, which might be useful.

Dave

Steve Melton

05-02-2020, 10:10 AM

hgerhardt

05-02-2020, 12:11 PM

Steve, how about using a strip of 3M VHB tape to apply it? The Sharkfin antenna on my Mazda is held on with VHB. No alignment pins needed, nor additional holes through the skin.

I know of a frontline supersonic fighter which uses VHB tape to hold composite trailing edge caps in place.

Snowflake

05-03-2020, 09:48 AM

Trying to keep an open mind on this. I suppose really good tape may work. That an air pulsing environment from the prop wash. If you need to remove the fairing it could be a pain. Anyone else have thoughts on about taping a fairing as a semi-permanent installation?
Good points, but I guess, worst case, it comes off. There's nothing really around to damage as it departs though... Even a tailwheel should be able to take a bump from a plastic fairing.

FWIW i've removed VHB mounted fairings before... The tape usually separates leaving residue on the surface, but the residue removes reasonably easily once the fairing is out of the way and you can work on it. WD-40 helps.

Snowflake

05-03-2020, 09:50 AM

Oh, I just remembered... What about mounting it the same way the fuel drain fairings mount, with a setscrew that bites into the base? They don't have any other means of anti-rotation either.

I haven't looked at the antenna mounting in detail, is there enough meat there that a setscrew could bind on it?

Steve Melton

05-04-2020, 08:08 AM

OK, this is looking good. I decided I wanted the latch on the left hand side so I mirrored the part. After some study I decided to change the latch feature and I am happy with it. This proves that a customized simple panel dock can be printed for $80 and achieve a perfect fit. As far as I know this will be the first printed panel dock to ever be installed.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3077_zpsmwutkzdq.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3074_zpswfauxxcv.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3072_zpscrdxfwwn.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3069_zps0opo8rqo.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3065_zpsi4uj2nmv.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/cap16_zpswsuprj8a.png

Ralph Inkster

05-04-2020, 10:50 AM

Steve - it's fun to follow this thread and watch as you get more comfortable with the 3D environment & progress towards more complex projects.
Keep 'em coming!

Steve Melton

05-04-2020, 05:52 PM

that install was as easy as it gets. no panel work needed. this dock is for AVMap to iFly 740 drop in.

old AVMap IV. A reliable unit but no traffic, weather or touch screen. Interface was not efficient to me but it guided me for many years and I'm grateful.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200504_141821_zpsxfcglrlw.jpg

**********

new to me, used iFly 740 with traffic and weather is installed. I have iFly GPS on my other three androids. iFly 740 has nmea output so hopefully my Trio autopilot with find the signal acceptable.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200504_170941_zpsoftdmjeg.jpg

D Weisgerber

05-04-2020, 06:33 PM

Are you going to make a GPS mount for the new Garmin 760?

Steve Melton

05-04-2020, 09:07 PM

Are you going to make a GPS mount for the new Garmin 760?

I'll inquire with Garmin to understand if they will lend me a solid model of the 760 to design a panel mount.

You know, the really cool thing is that the mount outer rectangular dimensions can be quickly adjusted so that a printed mount can fit an existing cutout. If you carried that thinking further you would say, hey, make the panel slot sufficiently large and then simply adjust the panel mount to fit any device in that space within reason. It's a thought.

Steve Melton

05-05-2020, 09:56 PM

getting this one ready for market. dimpled hole markers. clearance to drill holes from internals. wide area to fit to existing holes. custom outer dimensions available. I think this is a first for a panel mount.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap17_zpsia5ayzld.png

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200506_180510_zpsfcmtf0qc.jpg

**

6 x 8 inch

https://oi1249.photobucket.com/albums/hh519/semelton500/cap18_6x8_zps6ozdiwmz.png

**

6.5 x 8.5 inch, you get the idea.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap19_6.5x8.5_zpsmbod09gq.png

**

hey, my first gust lock order from Japan arrived. thank-you Mr. Kinugasa. I'll get them right out to you.

Steve Melton

05-09-2020, 01:38 AM

the 740 powered up and synced with my open source Lynx transponder for ADSB input. the screen is very bright. I am happy with that. so, I have this small cutout recess on the side from my previous panel mount that I wanted to cover. I made a trim piece to understand if the latch would slide under it and it did fine. my cutout edges are pretty straight but if they were not the small trim piece would hide the edge. then I thought it can sometimes be bumpy and difficult to use a touch screen, would a finger rest on the edge of the dock be useful and would it interfere with the gps install. it turns out that I think it would be beneficial and that it does not interfere with the install. the edge rest is .5 inch deep but it does increase the overall dimensions of the panel mount. then I thought, hey, why not build the edge rest into the panel mount itself as a option. so that's what I am trying now. the integrated edge rest is .375 deep. when big prints become taller they are more difficult to print. just kicking stuff around. also need to think about safety, I don't want something too deep that could impact me, it only needs to be deep enough to rest a finger against to stabilize the the hand.

some photos.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_152637_zpsco9ja5es.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_150912_zpso1cntgdd.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_125116_zpsujr2ev78.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_125127_zpsanef8hya.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_124608_zpsepuddy0u.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_124358_zpsznrkf4ro.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_130310_zpspw1s8jfl.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/cap20_zpskvysjhra.png

Snowflake

05-09-2020, 08:58 AM

If you take a look at some of the newer Garmin combined NAV/GPS/COM units (GTN, I think?) they have hand rests on one corner but they don't run around the entire perimeter. You could probably reach most of the screen if your hand had only one or two places to rest.

I offer this only because that intermediate step with the separate frame looks uuuuuuugly. :) The latest design looks much improved though it maybe could be smaller yet.

Steve Melton

05-09-2020, 11:06 AM

if you have ever operated touch screens in turbulence then you know it's essential to have a stabilizing finger surface.

Steve Melton

05-09-2020, 02:21 PM

integrated finger rests on the sides, .250 inch tall. I install the mount .150 inch proud all around, so .150 + .250 = .400 inch tall finger rests. that should be enough. it doesn't look too bad.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap21_zpsplgwfsll.png

Snowflake

05-10-2020, 09:57 AM

if you have ever operated touch screens in turbulence then you know it's essential to have a stabilizing finger surface.
Absolutely. Stabilizing the hand is a must. Sometimes even with the radio or transponder, for that matter, and they have knobs. :)

I looked again at the Garmins and I was incorrect about how they set it up. I had interpreted the curved portions of the plastic on the bezel as being the only raised areas (upper right below the Home button, and upper left below the SD slot), but on closer examination it looks like they have a full raised perimeter just like you've done:

https://static.garmincdn.com/en/products/010-00820-50/g/pd-01-lg-4e77a9c6-83ec-4bfa-808c-c07099bfc32f.jpg

I agree, your current design does look well integrated and not ugly. :)

Steve Melton

05-11-2020, 07:59 AM

hand rests have been incorporated on the sides of the panel mount for stabilization. that is essential for touch screens. it has slight stitching ridges on the inside of the bevel but I think I can correct that. that could be a feature. otherwise it is good go. it has a perfect grip on the GPS. this one is going to be installed. this was an experiment to see if it was possible to print one of these. it has been proved. roll your own.

the weight of this panel mount is the same as the AVMap panel mount I removed, 175 grams.

hey, I think my iFly will also store my music.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap1_zps9ibgbpii.png

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3094_zpsdnd4rfey.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3095_zps1hnmmajk.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3093_zpslje4cq8h.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3091_zpsodmgejrp.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3089_zpssd6l4aa0.jpg

Steve Melton

05-11-2020, 06:01 PM

I am pleased with this. 3/8 inch offset from panel. the hand rest is essential.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200511_175145_zpsaribkml2.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200511_172910_zpsm6sez6af.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200511_173107_zpsy87ba3d2.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200511_173028_zpscm9cjnwh.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200511_173130_zpstu8yxx2m.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200511_175243_zpsdta6slih.jpg

Steve Melton

05-13-2020, 07:25 AM

I took some extra care with the bevel surface to smooth it. it looks good now. when comparing the removed injection molded panel dock to the new printed one is that the top edge is flatter on the printed version and when installed makes a cleaner look. OK, I'm done with this. time to move on. .... also, by analysis, the stresses on this panel dock are low. it will outlast the GPS many times over. material is UV resistant ASA plastic.

removed injection molded panel dock upper edge - from China (not UV resistant material)

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3098_zps6akhgknc.jpg

**

newly installed printed panel dock upper edge. all edges are flat.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3100_zpsvtj3eoc6.jpg

**

printed bevel surface smoothed

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3109_zpsefr1nmks.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3104_zpseobybdp9.jpg

**

requires a right angle USB 2.0 connector (not 3.0) for the NMEA RS232 signal to the autopilot. this is a better connector style than my audio pin used on AVMap for NMEA.

I configured the iFly for auto boot up upon power up and auto shutdown upon power off. I like that. they really put a lot of thought into this unit.

since my 740 is on the aircraft wireless network for primary GPS signal (also has backup external GPS antenna) and ADSB. I hope it is possible to transfer my flight plan from my iFly tablet app to the 740. yet to be tested. and the best thing is that map updates for the 740 are included in my multi user tablet subscription. no extra cost for map updates.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3110_zps3atexcyo.jpg

Steve Melton

05-13-2020, 10:39 PM

Since the panel dock outer dimensions are custom made, the retrofit was simple and I didn't need to do any panel work. that saved A LOT of time. making a couple wiring connections here.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200513_151929_zps8d6vjn6t.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200513_152032_zpswip5mhci.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200513_152000_zpsvo4qj95t.jpg

Steve Melton

05-14-2020, 04:42 PM

Since this one is very similar to the iFly 740. I think I can do it. I'll need a beta tester to verify fit because I only have dimensions from their web site. the cable lead out could be tricky. I'll see what I can do.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap1_zps34nc83dj.png

Steve Melton

05-15-2020, 04:05 AM

I receive these inquiries from China at least once a week. They just want me to send them a solid model and they will injection mold it for cheap. No thanks! The design is relatively quick and simple. The key is the manufacturing. hey, they remind me to wear a face mask.

**********

Here are some tips to prevent infection:

1. Wash hands 2. Keep rooms well ventilated 3. Disinfect with alcohol 4. Wear face masks

I’m Nicole from HLH Prototypes. So nice to meet you. From the internet I noticed your company is mainly engaged in the research and development of plastic product.

HLH Prototypes is a well-known professional rapid tooling and prototypes manufacturer with 15 years’ experience and 2 modern production factories serving 3000 companies in 50 countries. Our advantage is the ability to provide fast lead times, good quality, and very competitive pricing.

Our services include: low Volume Injection molding & Tooling, Prototypes. We are your one stop service for all your rapid prototyping requirements.

company web site https://www.hlhprototypes.com/

Looking forward to hearing from you!

Best Regards
Nicole Xing – Rapid Tooling Engineer
HLH Prototypes Co. Ltd

w: www.HLHPrototypes.com
T: +86-755-8256-9129 ext 6048 M: +86-18816486135
WeChat：18816486135

Steve Melton

05-15-2020, 10:26 PM

with side hand rests. I still need to work the swing arm mechanics to confirm proper clearance but overall I think this is doable. overall min dimension to be approx 5.900 x 7.780 inch. this is a compact outer profile mount. no wasted space on the panel.

for comparison the ifly 740 panel dock min dimensions are: 5.600 x 7.680 (slightly smaller than the Garmin 760 dock)

https://oi1249.photobucket.com/albums/hh519/semelton500/cap2_zpsy1owfttv.png

Steve Melton

05-16-2020, 09:04 AM

what about a low profile iphone mount that could be attached with dual lock velcro similar to my D2 or screws. the base could be set to vertical and lateral angles for good viewing as an option.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200508_150912_zpsz9ha5xjk.jpg

Steve Melton

05-16-2020, 05:30 PM

bearings packed, left hand side brakes were 66% and I left them on, right hand side brakes were 33% so those got replaced. I took a photo of the spark plug baffle seal version 2 that was installed several months ago. I have version 2 on the right hand side and version 1 on the left hand side and they both look good. I don't believe either of them has been to extreme temperatures yet but they will this summer. material is nylon / carbon fiber.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200515_125836_zps9cwk1mbh.jpg

Steve Melton

05-17-2020, 06:52 AM

there seems to be plenty of good existing mounts for iPhones so I wondered about a simple holder similar to the 3x5 card holder I have. I still need to work the iPhone keep out zones but it's a thought. very simple. attach with velcro. lever on side allows for quick glance tilting.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap1_zps3yue2b5o.png

https://static.wixstatic.com/media/42b789_c3b97eafe6d146659fe4328bea954d40~mv2.jpg/v1/fill/w_440,h_330,al_c,q_85,usm_0.66_1.00_0.01/42b789_c3b97eafe6d146659fe4328bea954d40~mv2.webp

Steve Melton

05-18-2020, 11:18 AM

about a year ago I printed a bracket for my wing tip GPS antenna. I inspected it this condition inspection and it looks good. If I remember correctly, I reduced the weight of this bracket to 57 grams.

I have a Archer antenna in my right wing tip and a marker beacon antenna (a length of stripped coax). I installed my GPS antenna in the right wing tip also and used the coax from my marker beacon and left the marker beacon wire in place disconnected. I noticed my CDI would not capture the ILS as well and VOR performance was diminished. I removed the marker beacon antenna today and low and behold my ILS is smoother than ever, rock solid.

the plastic bracket did not interfere with archer antenna reception but the disconnected marker beacon wire did.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200517_145402_zpsjciovqdt.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200517_145412_zpsxdi1fgar.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200517_145739_zpscm54iurq.jpg

Steve Melton

05-18-2020, 11:24 AM

dimensional accuracy. the panel dock design long dimension is 7.680. the printed dimension is 7.682. within .002 inch. not too bad. I can ensure always to be within +/- .010 inch accuracy.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200517_101821_zpsjy5juulx.jpg

Steve Melton

05-18-2020, 05:03 PM

made the adjustment for keep out zones. so, no inadvertent button pushes. good for either orientation of the phone in the holder. OK for iPhone 6 and later versions. easy in and out.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap2_zpsghzgyfqa.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap3_zpslqccyosv.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap4_zpsucjngds0.png

https://oi1249.photobucket.com/albums/hh519/semelton500/cap5_zpspd58c9qc.png

DennisRhodes

05-19-2020, 08:04 AM

Steve Melton

05-19-2020, 09:52 AM

Steve, I use a 740b i fly with a ram mount on the panel, mounted in a portrait position. I also use the serial wire connection. Although kinda like my ram mount for setting the angle I would be happy to trial fit into your panel mount and send back pic for you, its easy to remove and reattach in seconds. I saw several post back where you needed a beta tester for fit. Let me know .

thx Dennis, the panel dock for the 740b is completed and on the market at www.rvplasticparts.com. it turned out very well. I was the beta tester. however, I do need a beta tester for the new Garmin Aera 760 just for the fit check on the GPS, it does not need to be installed in a panel. GARMIN responded to my request for a solid model of the GPS but they said that they don't have one. so, I needed to make one from their spec dimensions.

Steve Melton

05-19-2020, 10:47 AM

a simple place to put your iPhone. attaches with a couple strips of Velcro on the sides. the length and height of this part required a relief slot for printing as the continuous version had a slight warp at bottom edge and that is unacceptable to me. weight = 50 grams. hey, accessories should be light weight. we put a lot of effort to keep these planes light weight. the accessories should be light weight as well.

first trial print version, has slight warp at the bottom, not acceptable
https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3122_zpsseebtaq8.jpg

**
**

second and final version, includes a thru slot for printing relief, flat all around and is acceptable, good overall strength and stiffness
https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3121_zps6dfqbscb.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/cap6_zps7zeepadk.png

Steve Melton

05-20-2020, 03:35 PM

With or without a phone case, get a perfect fit since it is custom made. I discovered that some people use a cases they wrap around these phone. That makes it difficult to make properly if I only offer one or two sizes so I opened it up to custom sizes for all. Measure the Long Side, Short Side, and the Thickness and have a perfect holder, no compromises. This will work for any touch phone. note: I only have a small old flip phone and I still take it out of my pocket during a flight.

https://oi1249.photobucket.com/albums/hh519/semelton500/dim_zpsxjisbqq1.png

**

iPhone 6+ sized for no case

https://oi1249.photobucket.com/albums/hh519/semelton500/iph_6_zps29dy4v5c.png

**
**

iPhone 6 sized for a case, you can see the extra space around

https://oi1249.photobucket.com/albums/hh519/semelton500/iph_6_for_case_zpsfnag2soi.png

**

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3128_zpst6p3hxjk.jpg
https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3123_zpswkdn5lgu.jpg

Steve Melton

05-22-2020, 08:27 AM

RV9 flap bracket fairings printing in progress.

Taking a look at the RV-14 flap brackets. The RV14 wing underside is cleaner than the RV9 with no gap from the flap to the wing skin. They did a good job with this. I believe the RV14 wing is similar to the RV10 but has less span. I'll see if there is any reasonable opportunity for a fairing for these. Perhaps at least cover the bolt and close out the square aft edge with a fairing. Something simple and would look nice.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3148_zpsgpnyj1sk.jpg

**
**

RV-14

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3129_zpsams5i4aw.jpg

Steve Melton

05-26-2020, 01:30 PM

nothing is better than a custom part.

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3151_zps28azgzt3.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/cap1_zpsv2ji8fh0.png

Steve Melton

05-28-2020, 02:02 PM

Catching up with this project, load testing. From the outset I decided these needed to be Nylon/Carbon Fiber because of the single bolt attachment method. I printed an ABS version to check fit and a couple Nylon copies for print development. These are printed solidly at the bolt attachment and hollow reinforced hatch away from the bolt. I loaded them in a hydraulic vise to break them since I didn't have any other way to test them. So this is a relative test only. The ABS version failed at the bolt hole and the Nylon/Carbon fiber failed away from the bolt hole. When the Nylon failed at a higher loading and when it did fail it did not fail completely and retained enough strength that I could could fail it completely by loading it by hand against the edge of the table and leaning into it, probably 150 lbs or so. So, this confirms the need for Nylon/Carbon fiber for this part for me.

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200528_134421_zpsknzozo7s.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200528_134733_zpsfs5wun7x.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200528_135257_zpsz4yefjx0.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200528_135023_zpsgeeik9mu.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200528_140705_zpsiihu7nvn.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/IMG_20200528_140725_zps945yvufn.jpg

Steve Melton

05-29-2020, 04:43 AM

Length offset from bar

https://oi1249.photobucket.com/albums/hh519/semelton500/RV-12%20Rudder%20Pedal%20Length%20Comparison_zpso9b6b bzk.png

Steve Melton

05-29-2020, 01:19 PM

my machines predominantly use plastic gears to drive the filament thru the extruding nozzle. they wear after a couple years so I print new ones from time to time. these gears are pushing nylon/carbon fiber filament. I also have some print heads with metal gears but I'm partial to the plastic gears.

https://oi1249.photobucket.com/albums/hh519/semelton500/gears_zpsxulzaemy.jpg

Snowflake

05-30-2020, 09:14 AM

That looks like the fidget spinner I made a while ago... https://www.thingiverse.com/thing:3437692

(Sorry for the large image but the forum won't resize images and this is the only one on Thingiverse)

https://cdn.thingiverse.com/assets/1f/07/f7/70/3b/Planetary_04.jpg

Steve Melton

05-31-2020, 08:12 PM

a discovery that the RV-10 quick built wing has the RV-14 style aileron bracket rivet attachment instead of bolts. I'll make a note on the website and add the option to check for it to select the correct hook style. the colors really come together on this. be sure to always check the controls during preflight.

https://oi1249.photobucket.com/albums/hh519/semelton500/GL-RV-10-aileron_zpsikk1wim8.jpg

Steve Melton

06-01-2020, 05:59 AM

first 8mm to be shipped. material is nylon/carbon fiber

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3164_zps5lgelruk.jpg

Steve Melton

06-01-2020, 07:20 PM

offset from bar = 1.3 inch

probably the strongest part I have ever made. material is nylon / carbon fiber. material cost is 4x ABS but it is required for this part with the single bolt attachment. weight for one extension for 1.3 inch offset from bar = 60 grams, not including the bolt and nut. blending nylon with carbon fiber makes a truly unique material with great properties. combine that with tailor printing for optimum material placement creates a light weight and very strong part. printed solidly around the bolt hole. considering everything, this is probably the most technically advanced part I make.... at this time. :)

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3165_zpsw7kfvfbl.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3172_zpsy9fdjupi.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3171_zpspzmwonnb.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3169_zps28oovwx3.jpg

https://oi1249.photobucket.com/albums/hh519/semelton500/DSCN3176_zpsezx5sjbc.jpg

Steve Melton

06-04-2020, 05:09 AM

I'm thinking of giving a 3D Design and Printing Class at HAO this Fall and wonder how many would be interested in traveling to attend. This would be a compressed 4 hour class and would cover the basics; Design, Printer selection, Filament selection, Slicer software, Business model and website, Shipping, and perhaps touch on Finite Element Analysis. That's a lot to cover in 4 hours. Limit the class to 25 persons and charge $50 for real world experience information transfer.

The next day you could either fly or drive (45 min) to the Wright Patterson Air Force Museum for a great tour. Well, you can't fly directly to the Museum but you could get closer and take a car. and you could fly over Huffman Prairie where the Wright Brother learned to fly.

Steve Melton

06-05-2020, 06:05 AM

beginning to work this to see what is possible. I'm not sure the photo will post because photobucket is having one of their moments.

https://oi1249.photobucket.com/albums/hh519/semelton500/cap1_zpse3xownyt.png

Steve Melton

06-05-2020, 06:10 AM

Working this since I have a GARMIN 510. Dimensions are 6.250 x 4.250 to fit into a standard radio stack. Custom outer dimension sizes available to fit to an existing cutout if desired. Option for .25 inch raised side hand rest if desired. good access to bring the audio from the front with a right angle audio plug for music, or you can route it to the aft side, either way. since the unit automatically powers up and down with power input, no additional external switch option is required.

If you need a free panel mount that I don't have, send my your Avionics and I'll make you one. Expect about a week turn time.

Currently I have:
iFLY 740
GARMIN 500 Series

**

photo by something other than Photobucket

this one took a couple days. a beautiful part with a perfect fit. I may be getting better because this one only required two prints to perfect. moving on to something else.

https://static.wixstatic.com/media/42b789_9783cbd8618541d9820050b6de6998f1~mv2.jpg/v1/fill/w_440,h_330,al_c,q_85,usm_0.66_1.00_0.01/42b789_9783cbd8618541d9820050b6de6998f1~mv2.webp

Steve Melton

06-08-2020, 12:45 PM

I received a GARMIN 696 for a FREE custom fit panel dock. Turn time should be about a week.

Steve Melton

06-09-2020, 01:45 PM

kicking this idea around for a clip-on drain cup to catch the remaining oil. needs product testing. connects to 1/2 inch vinyl tubing. perhaps the tubing size could be larger. currently the grip may be too strong. it's rugged and so cute.

https://static.wixstatic.com/media/42b789_2aa32b5ea89443baa4839b43727b2ab1~mv2.jpg/v1/fill/w_500,h_375,al_c,q_85,usm_0.66_1.00_0.01/42b789_2aa32b5ea89443baa4839b43727b2ab1~mv2.webp

RV8JD

06-09-2020, 03:10 PM

FYI. It seems like my browser (Safari on an iMac) and my iPhone don't handle .webp pic files, so I cannot see them.

Steve Melton

06-09-2020, 03:15 PM

FYI. I don't see your .webp pic files in my browser (Safari on an iMac), nor on my iPhone.

thx Carl, I'm struggling with Photobucket photos (they said they have a new improved system so you know it could be down for awhile) so I'm trying something else. Hopefully, it works now.

Vlad

06-09-2020, 05:17 PM

thx Carl, I'm struggling with Photobucket photos (they said they have a new improved system so you know it could be down for awhile) so I'm trying something else. Hopefully, it works now.

That Peebucket is something. They locked me out after 12 years :)

Steve Melton

06-10-2020, 12:59 PM

still kicking this around. needs some flight testing. it should look good installed. 3 degree built in angle for reflex. unlike the RV9 flap fairing bracket, this one moves with the flap. it's a small piece.

https://static.wixstatic.com/media/42b789_6ae2e6a4b96a4fbfb6550325e7e0f834~mv2.png/v1/fill/w_500,h_287,al_c,q_90,usm_0.66_1.00_0.01/42b789_6ae2e6a4b96a4fbfb6550325e7e0f834~mv2.webp

RVbySDI

06-10-2020, 07:09 PM

I am not seeing your posted pics on my ipad.

Steve Melton

06-10-2020, 07:28 PM

thx Steve, OK, I'm going to give up posting until Potobucket revives but you may be able to see the photo here:https://www.rvplasticparts.com/

Steve Melton

06-14-2020, 09:39 AM

I received a GARMIN 696 for a FREE custom fit panel dock. Turn time should be about a week.

Completed and on the market. A simply big beautiful part with a good strong grip. Perfect.

Steve Melton

06-16-2020, 08:26 PM

working this for someone to make neat and tidy. hopefully it will flex around the canopy brace.

https://hosting.photobucket.com/images/hh519/semelton500/IMG_5621(1).JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3209(1).JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3208(1).JPG

Steve Melton

06-17-2020, 03:09 PM

test fit is complete on these and we are satisfied with the results. long distance test fit requires detailed communication and I was fortunate to work with such an individual. I appreciate the input for these extensions from multiple sources. the material selected for this part is nylon/carbon fiber that has very high strength. the bolt boss thickness was maximized to allow for a wide range of extension heights. this is really a great application of this material and uses five internal processes (solid around the bolt) to build each part to tailor the strength where it's needed and minimize weight. the weight for one of these parts, not including hardware, is only 60 grams.

note: carpet is not velcro'd in place. extensions do not extend beyond the bar and are same as Van's extensions width.

these extensions are 1.3 inch offset from the bar and is the preferred offset for this individual for a perfect ergonomic fit. it really is all about the foot!

https://hosting.photobucket.com/images/hh519/semelton500/DSC03841(1).JPG

https://hosting.photobucket.com/images/hh519/semelton500/RV_12_Rudder_Pedal_Length_Comparison.png

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3170.JPG

https://hosting.photobucket.com/images/hh519/semelton500/cap2.PNG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3169.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3165.JPG

Steve Melton

06-19-2020, 11:00 AM

testing another version for those than cannot fit the oil drain cup to the filter adapter because of clearance to oil lines or other items. this one slides under and then attaches to the filter with a magnet.

https://hosting.photobucket.com/images/hh519/semelton500/cap1.png

Mike S

06-19-2020, 11:19 AM

cderk

06-19-2020, 11:20 AM

working this for someone to make neat and tidy. hopefully it will flex around the canopy brace.

Let us know how this works out Steve, would love one as well

Steve Melton

06-19-2020, 11:23 AM

Let us know how this works out Steve, would love one as well

it does flex perfectly around the canopy brace but I wasn't able to seat it because of all of the GPS antenna's and other stuff on the glare shield in the test vehicle. so, remaining is to test the seating to insure the angle is correct.

Steve Melton

06-19-2020, 10:23 PM

a compact design using a strong magnet

https://hosting.photobucket.com/images/hh519/semelton500/Capture.PNG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3210.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3212.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3211.JPG

https://hosting.photobucket.com/images/hh519/semelton500/cap2.png

Steve Melton

06-20-2020, 08:58 AM

seems as if we have a good fit to cover the seam.

https://hosting.photobucket.com/images/hh519/semelton500/IMG_0040.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_0039.jpg

Steve Melton

06-22-2020, 09:19 PM

I have an RV9 with constant speed prop and an oil line than is close to the oil adapter. the prop gov cable bracket is also there so it's a busy space. the oil filter drain needs to be small enough to slide in easily but yet slide under the adapter. so, this is my latest configuration. it is held in place by a strong magnet and the oil drain line clears everything local and feeds straight downwards. yet to be tested. fun stuff.

https://hosting.photobucket.com/images/hh519/semelton500/cap3.png

https://hosting.photobucket.com/images/hh519/semelton500/cap4.png

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3297.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3299.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3312.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3324.jpg

Steve Melton

06-22-2020, 09:31 PM

I wanted to understand the load capability of these extensions so I purchased a cable winch. the problem with the winch is that is doesn't have a fine adjustment for precise loading. the good thing is that it has a remote control so I don't have to be close to the articles when they fail. that's a good thing.

I loaded the extension in it's weakest axis edge to edge, unsupported from a bar, as would be it's normal installed configuration and loaded it with with a thru bolt. I stopped for five minutes between loadings. as previously mentioned, at the high loading values it was difficult to get a precise measurement. the highest sustained load for five minutes was 320 lb. I estimate the failure was between 375 - 400 lb, but I did see 430 lb briefly. not too bad for a 44 gram piece of printed plastic loaded with a thru bolt. the material is nylon/carbon fiber and the extension is the 1.3 inch offset version which was preferred by a user.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3263.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3264.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3266.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3275.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3277.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3279.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3290.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3292.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3293.jpg

Steve Melton

06-24-2020, 07:54 AM

I received an order for one of these yesterday. it's leaving today. accurate outer dimensions within 0.002 inch. perfectly square and no warping as with some injection molded parts. this one has the 0.25 inch raised side hand rest option and if installed 0.125 inch proud gives 0.375 inch. the dock has an excellent grip on the GPS and when the GPS is installed the latch outer surface is flat with the part for a ultra clean look. I am proud of this part and I believe the owner will enjoy it.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3355.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3366.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3367(1).jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3362.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3357.jpg

Steve Melton

06-26-2020, 06:27 AM

I tested this funnel with the lower cowl on. it seems to work. when spinning the filter the the magnet stays attached but rotates slightly to the side but a hand can keep it centered. when it was drained I disconnected the funnel and pulled the drain tube out thru the bottom. very clean. overall, I'm happy with it.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3371.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3372.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3374.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3375.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3377.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3379.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3395.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3399.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3400.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3406.jpg

Steve Melton

06-26-2020, 10:11 AM

I was pleased to receive a GARMIN 760 for a panel dock fit but after review of the hardwire connection to the unit I was disappointed that Garmin did not configure this connection for minimum size a panel dock because the unique connection extends well beyond the GPS and is deep causing the rotation into the panel dock to wide. this could have been so much better and makes me wonder if Garmin really wanted this to unit to be panel mounted. certainly not a printed dock. I am still deciding if I want to give this a try because the dock will consume more space on the panel than I feel is necessary. Garmin may benefit from an improved design team that thinks thru all of the possible installations.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3412.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3410.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3411.JPG

Steve Melton

06-26-2020, 10:46 AM

Steve Melton

06-26-2020, 06:12 PM

Steve Ingraham's idea. He said it needs to be longer so I made a version for that. this is the short version installed. it rides up some on the forward side, on the seam. Perhaps the longer version would correct that but otherwise he is happy with it. Nice panel BTW.

https://hosting.photobucket.com/images/hh519/semelton500/IMG_5636.JPG

https://hosting.photobucket.com/images/hh519/semelton500/IMG_5634.JPG

Steve Melton

06-27-2020, 10:29 AM

I think what I'm going to do is make a panel dock for this and not allow for the current bulky connection style in order to minimize the panel dock size. obviously, it's not going to work with the current connection style but if Garmin ever redesigns a better connection for panel dock then it will. it's going to be up to Garmin. if enough people push Garmin for a better connection I'm sure they will comply. and/or the connection could be modified by the user with some effort to allow it to work.

Garmin 760 panel dock: after a nights sleep, I think I'll try a different route with this and try a spring loaded sliding release latch while using the Garmin latch system mounted inside the dock. I don't know if it will work so I am doing some latch trials. if successful, this will grow our capabilities.

one of the sliding latch trials for function testing.

https://hosting.photobucket.com/images/hh519/semelton500/cap1(1).PNG

https://hosting.photobucket.com/images/hh519/semelton500/cap2(1).png

it's shrinking

https://hosting.photobucket.com/images/hh519/semelton500/cap3(1).png

getting longer, 3:1 length to height, for smoother running

https://hosting.photobucket.com/images/hh519/semelton500/cap4.PNG

**

smooth running release lever. let's find a way to incorporate it. when you do the free body diagram a lot of things get better with the longer length.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3418.JPG

**

by our from front porch, sleeping. I think I could hold it in my hand, a couple days old. they eat our vegetable garden. ah well. spots even on the nose. this is Ohio.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3417.JPG

**

status 6/29, working to get the garmin mount in the dock. fun stuff. I need a lever to press the red button. :)

https://hosting.photobucket.com/images/hh519/semelton500/cap3(6).PNG

Steve Melton

06-29-2020, 08:30 PM

A nice job installing these by a neighbor behind me. I think he liked the project. It didn't take him long. Looking for some speed!

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200629_181302.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200629_181340.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200629_181428.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200629_181405.jpg

Steve Melton

06-30-2020, 04:06 PM

on the home stretch for this dock. hey, I have two days remaining to meet the one week deadline. getting closer to making contact from the slider to the release lever, the red areas. I need Calif to deliver some springs but I'm not confident in them at the moment.

https://hosting.photobucket.com/images/hh519/semelton500/cap6.PNG

jliltd

06-30-2020, 10:40 PM

Deadline schmedline. You're doing great stuff.

Steve Melton

07-01-2020, 11:30 AM

contact is made. hopefully, it prints well.

https://hosting.photobucket.com/images/hh519/semelton500/cap9.png

https://hosting.photobucket.com/images/hh519/semelton500/cap10.PNG

Steve Melton

07-03-2020, 10:26 PM

several weeks ago I posted some strength test results of a RV12 rudder pedal extension made of nylon / carbon fiber. the results were 320 lb across the weakest axis. before I broke the test setup down I tested a 2 month old development part and it was 20% stronger. how could this be unless some of the residual stress had relaxed or just test scatter? that made me wonder if I annealed some fresh parts to completely eliminate the residual stress would it made a difference. yes, it did. I annealed these two parts for two hours at 200F and tested one of them. I was afraid to test the second part because of the high loading and broken parts flying around the hangar. the annealed part failed at 620 lb. I believe these parts will relieve some of the printed residual stress over time at room temperature but annealing does it faster and probably more completely. I went down the rabbet hole and actually found something this time. :) not too bad for a 44 gram printed part.

BEFORE ANNEALING, 320 lb .... a test several weeks ago on a fresh part
https://hosting.photobucket.com/images/hh519/semelton500/DSCN3290.jpg

**
AFTER ANNEALING, 620 lb ... a recent test on a fresh annealed part
https://hosting.photobucket.com/images/hh519/semelton500/DSCN3445.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3422.jpg

****
I could not find the other half.
https://hosting.photobucket.com/images/hh519/semelton500/DSCN3447.jpg

****

I did not test the second part because of the danger. Maybe I'll do it tomorrow and put a blanket over it.
https://hosting.photobucket.com/images/hh519/semelton500/DSCN3420.jpg

Steve Melton

07-03-2020, 11:01 PM

this 760 dock is the first dock printed and I am having trouble finding anything to adjust but I'll keep checking over the next several days during first article inspection. this one has the .25 inch raised edge that serves to stabilize the hand. for a touch screen, I believe it is essential to stabilized the hand against a surface in order to even be able to operate the GPS. this dock finished a couple days ago but is still lacking a spring to install in the release slide. I don't believe I will receive the spring since this is a holiday weekend, but hopefully by Monday and ship on Tuesday. so, that's a 10 day turn around time from receipt of the GPS. missed the week turn by 3 days but it turned out very well. this dock will far outlast the GPS. BTW: you don't need all these side screws I just put them in to show where they are located. you only need either the long side or the short side screws installed. if you are making these at home, I used a .060 inch gap all around from the GPS and the spring is 1.5 inch long. the latch release slide is not installed in the photos, awaiting the spring.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3450.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3470.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3451.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3457.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3460.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3466.jpg

**

inspected at 74 deg F

************* design, measured
short side (inch) 5.662, 5.661
long side (inch ) 7.810, 7.810

https://hosting.photobucket.com/images/hh519/semelton500/Outer_Dim.png

https://hosting.photobucket.com/images/hh519/semelton500/install_view.png

Bill Boyd

07-04-2020, 06:31 AM

Those RV-9 aileron bracket fairings look sharp! How are the ones for the -10 coming along?

Snowflake

07-04-2020, 09:37 AM

I was afraid to test the second part because of the high loading and broken parts flying around the hangar.
I note in your test photos that you have hard points, rigid equipment, and then nylon (?) rope in the tension path. I recommend adding a section of steel chain. Rope stretches like an elastic and rebounds when it releases, giving you the flying parts. Chain doesn't rebound, it just collapses.

Steve Melton

07-05-2020, 08:08 AM

Those RV-9 aileron bracket fairings look sharp! How are the ones for the -10 coming along?

working to achieve a better blended surface transition on the sides then need to do a fit check.

Steve Melton

07-05-2020, 08:09 AM

I note in your test photos that you have hard points, rigid equipment, and then nylon (?) rope in the tension path. I recommend adding a section of steel chain. Rope stretches like an elastic and rebounds when it releases, giving you the flying parts. Chain doesn't rebound, it just collapses.

good suggestion, the rope acts like a bow string. parts flying and banging off the sides of the hangar walls. I may try putting a blanket on it.

Steve Melton

07-05-2020, 05:05 PM

getting a new prop gov. group buy. using magnetic drain cups, two at a time, one also at the filter. very strong magnet, actually five individual small magnets in there, locked with epoxy resin. didn't spill a drop of oil.

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200705_164526.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200705_175243.jpg

Steve Melton

07-06-2020, 07:48 AM

another option to test today. it may find a use for getting close. using multiple magnets and having the texture of the print with the epoxy bonding locks the magnets in place. the magnets are very secure.

https://hosting.photobucket.com/images/hh519/semelton500/mag_recess_cap1.png

*******

iteration 2, allows the drain tube to be outboard from center to gain clearance

https://hosting.photobucket.com/images/hh519/semelton500/mag_recess_cap2.PNG

Steve Melton

07-06-2020, 07:52 AM

good suggestion, the rope acts like a bow string. parts flying and banging off the sides of the hangar walls. I may try putting a blanket on it. the blanket was a good solution. it trapped the part at failure, load at failure was 570 lb as witnessed by the young fuel truck operator.

Steve Melton

07-06-2020, 11:20 PM

PCU5000X, group buy. these oil drain cups kept it clean during the install. I think I'll keep them around. big boy on the left not offered yet, but will be.

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200706_181455.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200706_182704.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200706_225124.jpg

Steve Melton

07-09-2020, 08:31 AM

this dock is complete. upon first article inspection I found a couple things. the biggest finding is I did not allow for the Garmin mount pop out portion when the release lever is pressed. clearance was not adequate. that's a lesson. push all the buttons, then measure.... I also tweaked a couple dimensions to dial it in. the sliding release lever is smooth. I'm happy with it, but it took two weeks instead of one. it will be going back to owner. thanks for letting me use it as a pattern. this dock has the .250 inch raised hand rest. you only need four screws total to install,either the long sides or short sides but all screws are shown in the photos.

**

this pop out thing on the garmin mount was not accounted for in the first print. lesson, push all the buttons, then take the measurements.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3489.jpg

**

in-process photo. all screw locations are printed solidly.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3490.jpg

**

finished and assembled

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3494.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3496.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3497.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3500.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3502.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3504.jpg

Steve Melton

07-09-2020, 10:41 AM

a couple of people have asked what the sliding release looks like inside. here is a cross section view. the spring is trapped inside, very compact, try doing that with injection molding :) . it's a low force spring.

https://hosting.photobucket.com/images/hh519/semelton500/latch.png

Steve Melton

07-10-2020, 10:38 AM

this is not my model and I am just beginning to look it over but early stages of the review appear promising. I am beginning to feel blown away by the detail. the heavy modeling work was done in Brazil.

https://hosting.photobucket.com/images/hh519/semelton500/RV6.PNG

https://hosting.photobucket.com/images/hh519/semelton500/inside.PNG

https://hosting.photobucket.com/images/hh519/semelton500/Lycoming_360.PNG

https://hosting.photobucket.com/images/hh519/semelton500/Lycoming_360_Xsect.PNG

https://hosting.photobucket.com/images/hh519/semelton500/fuel_air_servo.PNG

Steve Melton

07-10-2020, 03:32 PM

I was wondering if I could get a better grip if my wheel chocks were contoured to the tire. I run 40 to 50 psi on the mains and that makes a low angle for the tire to pavement intersection and my 45 degree chocks can slip. What if the chock surface was contoured to the tire, would it be better? of course this depends on the diameter of the tire to have a proper contoured surface.

https://hosting.photobucket.com/images/hh519/semelton500/Cap1.png

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3613.JPG

Steve Melton

07-12-2020, 01:20 PM

I'm having some fun here looking at these. the idea is to have the tire engage the chock slightly to press it to the pavement before running up on the chock small graduated ridges. you want a low angle initially to set the chock but then quickly engage the tire. higher pressure tires have a smaller angle. this one is designed for the 35-45 psi range. I made a clay/epoxy impression and fit a spline to the outline and then compared that to a round tire. it was an interesting review. I needed some new chocks anyway. these will be too expensive for the average guy but if you have a printer then you may give it a try. these are ASA plastic, UV resistant material. height from vertical is 1.5 inch. I'm beginning to settle on a 4.5 inch width, that is 0.5 inch less than the tire width. final width is still TBD. the printed ridge edge is not sharp is blunt so not to damage the tire.

https://hosting.photobucket.com/images/hh519/semelton500/Cap2.PNG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3652.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3655.JPG

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3631.JPG

Steve Melton

07-12-2020, 10:24 PM

OK. here's the result. it really is in the details. it rolls on perfectly to a nice tight grip. the low angle set the chock. the ridges set the grip. it surpassed my dreaming of the perfect chock.

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200712_213534.jpg

https://hosting.photobucket.com/images/hh519/semelton500/IMG_20200712_214146.jpg

*****

for a guy I know that flies in all weather conditions. coming your way.

https://hosting.photobucket.com/images/hh519/semelton500/Cap3.PNG

DrillBit

07-12-2020, 11:50 PM

So, apropos of nothing, is this thread the longest in the VAF universe?

Steve Melton

07-12-2020, 11:54 PM

So, apropos of nothing, is this thread the longest in the VAF universe?

yes, and it started from nothing. just a thought. you really need to be addicted to aviation to do this. I can think of worse things!

but then again, I tell the young guys, "I'm the guy your mother warned you about"......

Bill Boyd

07-13-2020, 09:24 AM

Steve, if anyone here could write off his RV as a business-related expense, it's you. :D

I sometimes try to think of something RV-related that needs inventing so I can do the same. Sigh...

Snowflake

07-13-2020, 02:22 PM

Steve Melton

07-14-2020, 05:03 AM

Is this the model that the guy wanted $300 for?

yes, this is the same model. I wanted to have a general reference for the engine and airframe. also, it is nice to work thru how others build models as a learning for me.... continued training. the model checks I have made so far of the basic dimensions are good. even the tire is the correct outer diameter as the original Van's tire. my Michelin tire outer diameter is slightly larger by fraction. dealing with the owner of the model in Brazil was straight forward and pleasant. hopefully, there is more to come from him.

https://hosting.photobucket.com/images/hh519/semelton500/rib.PNG

rv8ch

07-14-2020, 05:19 AM

...

https://hosting.photobucket.com/images/hh519/semelton500/Cap3.PNGThose are very cool! Why are they expensive? Are they solid? Could they be made with some structure in there that provides support, but uses less material?

Steve Melton

07-14-2020, 05:38 AM

no, they are not solid but they have a good structure . they weigh 3 oz each (.187 lb, 83 grams). the cost to print these would be well above existing wheel chock prices. they would cost $40 each. after I complete the testing I may add them for sale on the website. there may be some that are willing to go to the expense, or not. the nice thing about printing is that I don't need to carry an inventory of parts, only plastic.

https://hosting.photobucket.com/images/hh519/semelton500/wheel_chock.PNG

swisseagle

07-14-2020, 06:05 AM

Steve Melton

07-14-2020, 06:46 AM

Hy Steve

Why do you not make it "bowed" like the tire?

In the 2nd picture of post 1430, only the center is contacting the tire.
A bow that represent the "mid" use range of a tire, so that it fit new/used/heavily used tires.

Would there be any disadvantage because of this?

I thought about bowing it and actually made a model of it. it gets bigger and heavier. tire profiles are different. the original Van's tire is flatter. my Michelin's are rounder. I want to be able to carry these with me. I decided to keep it simple.

if you are making these at home, the real key is to bring the tire on to the chock at a low angle in order to set the chock, then quickly engage the tire. keeping the forward side near vertical allows the force to drive the edge directly into the pavement as the tire rides up. that should provide the best engagement.

engrave them with the tire size and aircraft number. so, if your buddy behind you borrows them you have a chance of getting them back.

Snowflake

07-14-2020, 07:15 AM

yes, this is the same model. I wanted to have a general reference for the engine and airframe. also, it is nice to work thru how others build models as a learning for me.... continued training. the model checks I have made so far of the basic dimensions are good.
Makes sense, good to see someone has a business case for getting a copy. I wish I could justify it for "playing around." :)

The only error I could see right off the bat is that the wingtips are the new style, not the RV-6 style.

Steve Melton

07-16-2020, 01:35 PM

I'm in the final stages of refining and testing some wheel chocks. bigger or smaller? will they hold on a sealed concrete floor covered in engine oil? what about asphalt or rough concrete?... and some disappointments. more to come.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3784.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3781.jpg

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3735.jpg

Steve Melton

07-17-2020, 07:10 AM

summary of wheel chock testing. caution: if you conduct this type of testing, beware that cables under tension can be dangerous. no injury or damage to the aircraft occurred during this testing.

https://hosting.photobucket.com/images/hh519/semelton500/Slide1.jpg

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Steve Melton

07-18-2020, 12:54 PM

if a pilot is on typical outdoor concrete or asphalt, the chocks can withstand a maximum average of 235 lb per wheel, 235 x 3 = 705 lb total. that should be enough to withstand the thrust from a 200 hp / constant speed prop combination without applying brakes. not too bad for a small chock, but not much load margin, so hold the brakes lightly.

the nose wheel chock is designed to maximize stopping at the same forward movement position as the main wheel chock in order to have all wheels acting together at maximum.

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Steve Melton

07-18-2020, 08:41 PM

another Garmin dock in the final stages of printing for a customer. according to the beta tester, he had a good fit to his laser cut panel.

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Steve Melton

07-20-2020, 08:59 AM

for RV10 main tires. same engagement forward distance as 5.00-5 chock to maximize loading to all tire simultaneously. the 6.00-6 is 10% taller than the 5.00-5 chock for the increased wheel size.

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Steve Melton

07-20-2020, 09:07 AM

because of recent unprecedented demand for RVPlasticParts we will have an across the board price increase on July 31 in order to slow the train. we have not had a price increase in three years but the volume of parts has increased along with plastics cost. printing parts for aircraft use is a new and exciting environment and hopefully we will have new applications with new materials going forward. there is no telling where the future will lead but it's looking good so far. thanks for supporting RVPlasticParts. Steve

Steve Melton

07-20-2020, 02:25 PM

the beta tester did some nice work here installing this dock. everything is working properly with smooth latch operation. I already know the beta tester will like the side hand rest when operating the touch screen in-flight. the printed dock is manufactured to tight tolerances with the edges being perfectly square and flat with recessed internal features for screws and a trapped spring at the latch for reliability. try doing that with injection molding. the panel cutout was made to design dimensions before the dock arrived. check the fit. UV resistant plastic. it will stay looking good well over the life of the GPS.

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jliltd

07-20-2020, 09:59 PM

I just got a few of Steve's parts in the mail. Having been a project design engineer in the aerospace industry for years I wasn't sure what to expect but he seemed to talk the talk and do good work. Good engineering is one thing. But creativity, art, situational awareness and planning are another. I am totally delighted with every single item I ordered and Steve delivered. Very well thought out and designed. He's the real deal. When it comes to 3D printed parts (and I suspect other things) Steve has it going on.

Steve Melton

07-21-2020, 09:07 AM

thanks for the kind words. I received this legal letter from Airgizmos and China today. it appears China is concerned. what do you make of it? my Garmin 500 series dock is not this design. I have no idea what their latching mechanism is. my latching design was my own concept and is unique.

https://42b789ee-444f-4c2f-a6b8-1006e628dc67.usrfiles.com/ugd/42b789_8be33a9e0c28455f98a075c082acba0d.pdf

my question is how can Airgizmos sell their products in the US without a "Made in China" label on them?

RVPlasticParts are NOT Made in China. They are made in Cincinnati, USA.

**
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Andy_RR

07-21-2020, 09:43 AM

I suspect they are mostly upset about your use of their trade mark "Panel Dock" in all your advertising and descriptive material.

RV7A Flyer

07-21-2020, 10:45 AM

thanks for the kind words. I received this legal letter from Airgizmos and China today. it appears China is concerned. what do you make of it? my Garmin 500 series dock is not this design. I have no idea what their latching mechanism is. my latching design was my own concept and is unique.

https://42b789ee-444f-4c2f-a6b8-1006e628dc67.usrfiles.com/ugd/42b789_8be33a9e0c28455f98a075c082acba0d.pdf

my question is how can Airgizmos sell their products in the US without a "Made in China" label on them?

My question is what, exactly, is the patent for? Plastic boxes? Holes? Tabs?

This seems like patent trolling to me, but IANAL. If I were you, I'd make some small change to your design, and file your own patent. :)

rv8ch

07-21-2020, 10:49 AM

... I received this legal letter from Airgizmos and China today. it appears China is concerned. what do you make of it? ...This might be one of those cases where some time with an IP lawyer is worth the money, even if your instinct might be to just stop selling that product.

cderk

07-21-2020, 01:03 PM

thanks for the kind words. I received this legal letter from Airgizmos and China today. it appears China is concerned. what do you make of it? my Garmin 500 series dock is not this design. I have no idea what their latching mechanism is. my latching design was my own concept and is unique.

my question is how can Airgizmos sell their products in the US without a "Made in China" label on them?

RVPlasticParts are NOT Made in China. They are made in Cincinnati, USA.

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Steve -
What the letter is claiming is that you are calling your product Panel Dock, which Airgizmos has a Trademark for. You just have to stop calling it that. I think they are just making you aware of the patents

cderk

07-21-2020, 01:09 PM

In other words, change your website to say “GPS Dock” or “GPS Instrument Panel” Dock, take a few photos of your website with the changes, mail it back to them and move on...

Steve Melton

07-21-2020, 01:13 PM

In other words, change your website to say “GPS Dock” or “GPS Instrument Panel” Dock, take a few photos of your website with the changes, mail it back to them and move on...

OK, I'll do that. thx

erich weaver

07-21-2020, 01:27 PM

Steve -
What the letter is claiming is that you are calling your product Panel Dock, which Airgizmos has a Trademark for. You just have to stop calling it that. I think they are just making you aware of the patents

For whatever its worth, I dont agree with this characterization. Right or wrong, they are also claiming that Steve is manufacturing replicas of their product for financial gain. Who knows whether or not they will be satisfied with a simple name change, but the letter seems to indicate not. Maybe its just a lot of chest beating bluffing, but that remains to be seen.

Sorry man. Bummer you have to deal with this.

Erich

Steve Melton

07-21-2020, 01:35 PM

I wear a lot of hats while working in the basement... at least I get out of the basement for flight testing. I got my 4 mile run in today, first day back after recovering from a cold. I have a vacation to look forward to in August.

design
manufacture
ground testing
flight testing
shipping
finance
website
ordering supplies and equipment (I have found uninterruptible power supplies to be beneficial)
printer maintenance
sales
correspondence
now legal

dpansier

07-21-2020, 03:09 PM

I would spend some time reviewing this.

Steve Melton

07-21-2020, 03:29 PM

I would spend some time reviewing this.

there must be hundreds of items out there that do this very thing, mounting all kinds of stuff. sort of like filing a patent on a spoon.

odens_14

07-21-2020, 04:21 PM

there must be hundreds of items out there that do this very thing, mounting all kinds of stuff. sort of like filing a patent on a spoon.

That may be true; however, in this specific case you're mounting the same type of equipment applied for so that diminishes your argument somewhat. Also, that is what their patent claims and it was approved. I think it's silly they're going after you for 3d printing from your home filling a need they haven't yet gotten around to filling...but it appears they are.

I'm not sure how big of company AirGizmos is but the fact they either a) hired a lawyer or b) have one on retainer means they likely mean to pursue it. The firm does appear to be a legitimate intellectual property firm in Dallas.

If/when they file suit it's going to cost $$$$ to defend, which is exactly what they count on to get you to go away. unfortunately in our legal system, especially on the civil side, the bigger pockets often win because the "little guy" either doesn't have or doesn't want to risk the amount of money it costs to adjudicate. Even if you win, which IMO is shaky at best in this case considering how close your product is to theirs, the chances of getting any costs awarded are extremely low and winning wont feel all that great if it comes with a big legal bill...

Steve Melton

07-21-2020, 04:30 PM

That may be true; however, in this specific case you're mounting the same type of equipment applied for so that diminishes your argument somewhat. Also, that is what their patent claims and it was approved. I think it's silly they're going after you for 3d printing from your home filling a need they haven't yet gotten around to filling...but it appears they are.

I'm not sure how big of company AirGizmos is but the fact they either a) hired a lawyer or b) have one on retainer means they likely mean to pursue it. The firm does appear to be a legitimate intellectual property firm in Dallas.

If/when they file suit it's going to cost $$$$ to defend, which is exactly what they count on to get you to go away. unfortunately in our legal system, especially on the civil side, the bigger pockets often win because the "little guy" either doesn't have or doesn't want to risk the amount of money it costs to adjudicate. Even if you win, which IMO is shaky at best in this case considering how close your product is to theirs, the chances of getting any costs awarded are extremely low and winning wont feel all that great if it comes with a big legal bill...

I am willing to push it and spend my time in court if needed. They may also have Chinese backers with money. So that may be a factor.

Pdtofly

07-21-2020, 06:09 PM

Andy_RR

07-21-2020, 07:55 PM

I am willing to push it and spend my time in court if needed. They may also have Chinese backers with money. So that may be a factor.

If you get in a legal fight over this, you may be betting your personal farm on it. IMHO you are taking a huge risk here for relatively minimal up side.

They will likely focus on breach of trademark which is obvious and a very likely loss to you. That's a pretty easy fix for you - avoid using the words "Panel" and "Dock" in your product name or description.

The patent is less clear and you may be able to find some prior art to render it a non-issue but that will cost you money (and lots of it) if they want to dispute the point with you. Alternatively, you can attempt to avoid your design from fitting the description in their patent claims.

There is no good to come out of any of this and being antagonistic towards them will cost you dearly.

Steve Melton

07-21-2020, 08:09 PM

If you get in a legal fight over this, you may be betting your personal farm on it. IMHO you are taking a huge risk here for relatively minimal up side.

They will likely focus on breach of trademark which is obvious and a very likely loss to you. That's a pretty easy fix for you - avoid using the words "Panel" and "Dock" in your product name or description.

The patent is less clear and you may be able to find some prior art to render it a non-issue but that will cost you money (and lots of it) if they want to dispute the point with you. Alternatively, you can attempt to avoid your design from fitting the description in their patent claims.

There is no good to come out of any of this and being antagonistic towards them will cost you dearly.

yeah, it's a box with a latch. I think they did that in Roman times maybe the Egyptian or Neahterthal. what about the iPhone holder you put on your dash in your car, is that illegal also. I'll represent myself in court. what if I could show an ancient Neahterthal box with a latch during the trial? yes, it exists. I'm an old guy working in the basement with a 3D printer. I can fly to Texas for the trial but first I need to pull my prop to get a grease leak fixed. That's for tomorrow. You know my great great great uncle died at the Alamo in Texas, right. Basically, I'm not afraid of much. I think I would wear coon skin cap at the trial like Davey Crocket, who also died at the Alamo. Let me know when you have done a first flight.

rv7charlie

07-21-2020, 08:36 PM

I will never, and I mean never buy, or recommend anyone else to buy a product from AirGizmos. If everyone here does that, the little business you will get from making your 3D mounts, will cost them more than they will lose.

You have also designed a mount for something they have not made yet. Go after them for stealing your design for the 760 mount.

Please remove anything that has their trademark name on it, and come up with something else more catchy.

Good luck.

Brian

JP Instruments did exactly the same thing (trademark) to Matt Dralle (creator of the original RV List) over his Fuelscan instrument, which had been on the market for years prior to JPI producing, stealing the name, and then trademarking their version.

dpansier

07-21-2020, 09:52 PM

Steve Melton

07-21-2020, 09:53 PM

Steve,

Based on your comments it appears that you have not been involved with this type of litigation.

Are you prepared to give up 12 to 18 months where you spend 100% of your time responding to inquires with deadlines? You will be questioned on nearly 150 pages of “ a couple of printed ideas” and if that is not enough you will become very tired of writing checks for $300 or more per hour to your favorite attorney.

When it all said and done, win or loose, you will have given up years of your life doing things that are not enjoyable and spent finances you will never recover.

I am prepared for that. For old guys, a year is like a month. If the litagation stretches for 10 years, it will be like one year for me. In 20 yrs, I will be dead or going, what does it matter. A morbid thought, but that's reality. It's the principle that matters, how can you patent a box with a latch that was made by the Neaderthals? What do you say, take it to the Supreme Court? Wait a minute, I need to get several 760 docks off printers for shipment. that's the only reason I'm still awake. Bye.

Andy_RR

07-22-2020, 05:07 AM

Do yourself a favor, Steve, before you make any decisions as to how or how not you will tackle this problem. Spend $300 with your favorite lawyer and get his/her opinion on the matter. It could be the best $300 you ever spent.

It's not about whether you're afraid or not of something. It's how you choose to spend your time and money and whether a bad choice will be forced upon you by someone you despise.

Steve Melton

07-22-2020, 05:08 AM

Do yourself a favor, Steve, before you make any decisions as to how or how not you will tackle this problem. Spend $300 with your favorite lawyer and get his/her opinion on the matter. It could be the best $300 you ever spent.

I would never hire a lawyer. How do lawyers contribute to the forward progress of man? By issuing a patent on a box?

Andy_RR

07-22-2020, 05:14 AM

I'm no fan of lawyers either, Steve. Not by a long shot, but you could be forced to hire one by people you do not like.

Or they get a judgement against you and you're forced to sell all the things you love and more.

Good luck with it, whatever you choose.

Steve Melton

07-22-2020, 05:49 AM

and the box AirGizmos makes for the iFly 740 doesn't work. the dock simply falls out of it, plus it doesn't have the raised side edge for touch stabilization. so what would the lawyers be defending? a box that doesn't work?

Andy_RR

07-22-2020, 06:10 AM

They are not defending - they are attacking! You are defending.

Steve Melton

07-22-2020, 06:51 AM

this is my day job now. I've been forced into early retirement because of COVID. life is really not too bad these days. I get to do more of what I really like to do and at my own pace and I get to do more running and training for a half-marathon. today, I pull my prop after 7 yrs for refurb. the prop has been good. no rushing on the weekends or evenings anymore to get the airplane work done.

Steve Melton

07-22-2020, 07:01 AM

Congrats, Steve on your independence!! I "retired" 8 yrs ago and haven't missed the grind for a single minute.

thx, 37 yrs, done. it's quite nice. I do not miss the daily driving to work.

Snowflake

07-22-2020, 07:36 AM

there must be hundreds of items out there that do this very thing, mounting all kinds of stuff. sort of like filing a patent on a spoon.

Irrelevant. The problem is that they have chosen to target *you* and you *are* infringing. I wondered about this when I saw your first gps mount posted alongside the trademarked name.

Any garage-designed product that starts to grow into a serious concern becomes a target for patent trolls. You simply can't duplicate patented functionality and sell it without paying a percentage to the holder of the patent.

I would never hire a lawyer. How do lawyers contribute to the forward progress of man? By issuing a patent on a box?
They have contributed to the forward progress of AirGizmos, by ensuring that AirGizmos continues to make money for it's shareholders. You're going to have to play the game if you want to keep selling products, because you risk losing much more than just the GPS products off your website.

Steve Melton

07-22-2020, 07:50 AM

Irrelevant. The problem is that they have chosen to target *you* and you *are* infringing. I wondered about this when I saw your first gps mount posted alongside the trademarked name.

Any garage-designed product that starts to grow into a serious concern becomes a target for patent trolls. You simply can't duplicate patented functionality and sell it without paying a percentage to the holder of the patent.

They have contributed to the forward progress of AirGizmos, by ensuring that AirGizmos continues to make money for it's shareholders. You're going to have to play the game if you want to keep selling products, because you risk losing much more than just the GPS products off your website.

they are really not attacking me, they are attacking 3D printing and technology. who will be their next garage victim? wouldn't it just be better for them to embrace the technology and move on? cut the ties to China because that may soon go away anyway. why be stuck with some old style dock that doesn't work when you can print a better one, cheaper and faster. I've shown that, hopefully the young guys will take notice and learn. who knows, they may already be copying my work, good for them. it will allow them to make a better product. I've shown the way forward. that's my small contribution but I'm taking a beating. change is hard for some people, especially when you become older. I try to fight that and always say "what if" and then give it a good try. more times than not, it turns out. if it doesn't you will learn and become better. the key is to not be afraid. NO FEAR!

Snowflake

07-23-2020, 07:29 AM

they are really not attacking me, they are attacking 3D printing and technology.
To put this in perspective: If you're driving down the highway in a group of cars that's all going 15mph over the limit, and you pass a cop, he can only pull one of you over. No, it's not fair, especially if you just happened to end up in that group and didn't even notice the speed as you were all driving along fat dumb and happy. But the fact remains that you were speeding, and no amount of saying "well they were all speeding" negates that.

I applaud your willingness to fight. But you have two choices... Stop all advertising and production of anything like a GPS in-panel mount, or lawyer up and fight. The former will only cost you the sales on your GPS mounts. The latter may cost you the entire business, and more. Especially if you don't have a lawyer who knows the process helping you. The laws are on AirGizmo's side.

It's unfortunate, but was likely inevitable the more visible your business became.

Steve Melton

07-23-2020, 08:19 AM

To put this in perspective: If you're driving down the highway in a group of cars that's all going 15mph over the limit, and you pass a cop, he can only pull one of you over. No, it's not fair, especially if you just happened to end up in that group and didn't even notice the speed as you were all driving along fat dumb and happy. But the fact remains that you were speeding, and no amount of saying "well they were all speeding" negates that.

I applaud your willingness to fight. But you have two choices... Stop all advertising and production of anything like a GPS in-panel mount, or lawyer up and fight. The former will only cost you the sales on your GPS mounts. The latter may cost you the entire business, and more. Especially if you don't have a lawyer who knows the process helping you. The laws are on AirGizmo's side.

It's unfortunate, but was likely inevitable the more visible your business became.

I really don't care about how many sales. I'm not here for that, really. I am happy to sit around and watch YouTube videos of people building airplanes.
Airgizmos patent is a box that mounts an instrument and has a latch. that was accomplished eons ago many times over and I can prove that. I have the time and patience to put a case together and travel for trials. I have friends and relatives in Texas. the old man with a 3D printer prints a box in his basement and goes to court. that should be a good story.

you know it only takes a week or so to design one of these docks from scratch and hold it in your hand. it's installed in the airplane within the next couple of days and tested. these models travel the world as digital files in the blink of an eye. how can you stop that kind of progress? it's impossible.

I'm optimistic about the future. it's going to be great!

cderk

07-23-2020, 09:33 AM

RV7A Flyer

07-23-2020, 11:10 AM

All this talk about putting together one's own case and fighting it out without counsel...well, I'm reminded of the old expression:

The man who acts as his own lawyer has a fool for a client.

Steve Melton

07-23-2020, 11:12 AM

All this talk about putting together one's own case and fighting it out without counsel...well, I'm reminded of the old expression:

The man who acts as his own lawyer has a fool for a client.

probably written by a lawyer.

Steve Melton

07-23-2020, 11:22 AM

I’m not an attorney, so take this for what its worth. I work for a tech company and work alongside our legal department to fight stuff like this as well as “attack” others who I believe are infringing.

1. Litigation is expensive, sending a letter costs almost nothing. I always start with sending a letter in the hopes that the organization i sent it to will roll over and play dead, doing exactly what i want.

2. I always send a letter that will benefit me the most - demanding as much as i can, and take what ever I can get for “free”.

3. If I received what you did I would do two things:
A. Stop calling your product Panel Dock. They have this trademarked and its very clear. You have a similar product and call it panel dock and I believe that is a violation of their trademark. I would respond to them by saying you’ve removed the Panel Dock references and give them a victory.
B. Indicate that you do not feel like you are violating any of the claims in their patents and if they believe that you do, to please cite which claims. Let them do the work on telling you why you’re violating a patent versus you having to figure it out.

Again, my $0.02 - your mileage may vary.

thx, the name has been changed to "GPS Dock" as was suggested by others. I deleted the word "Panel" from the RVPlasticParts website.

question: how can I globally delete the word "Panel" from my posts on the VansAirforce website? or do I need to do each one individually? or maybe just delete the entire thread and start over. that's OK with me and would be easier. that way I could use the new photo posting method and drop Photobucket but I must say they seem a lot better lately. I don't know what they did but the photos upload very very fast to them now where as before it was painful.

Steve Melton

07-24-2020, 05:56 AM

if you are designing these at home be sure to add the side raised edge because I offer both with and without it but everyone has selected it as the preferred option. I can tell you from experience that the side raised edge is essential for these large touch screens in order to stabilize the hand in bumpy conditions.

made in Cincinnati with UV resistant plastic from Michigan by printers from North Dakota to very tight tolerances.

lr172

07-24-2020, 07:20 AM

I am prepared for that. For old guys, a year is like a month. If the litagation stretches for 10 years, it will be like one year for me. In 20 yrs, I will be dead or going, what does it matter.

Steve,

If you pursue this to court, you stand a decent chance of losing, especially if not using an experienced attorney. A loss in court will likely come with a significant judgement and possibly an order to pay the plantiff's legal fee's. Depending on the details of your corporate arrangement, your estate could be on the hook for paying these.

Strongly suggest you get some professional input before going down that road. I agree with others that this is being pursued as both a patent and trademark infringement.

Larry

Steve Melton

07-24-2020, 07:26 AM

Steve,

If you pursue this to court, you stand a decent chance of losing, especially if not using an experienced attorney. A loss in court will likely come with a significant judgement and possibly an order to pay the plantiff's legal fee's. Depending on the details of your corporate arrangement, your estate could be on the hook for paying these.

Strongly suggest you get some professional input before going down that road. I agree with others that this is being pursued as both a patent and trademark infringement.

Larry

I have complied with the trademark infringement claim. As for the patent claim for a box with a latch. Bring it on. I have the time and the patience for it.

lr172

07-24-2020, 07:42 AM

I have complied with the trademark infringement claim. As for the patent claim for a box with a latch. Bring it on. I have the time and the patience for it.

It is important that you reply to the attorneys letter indicating that you have ceased in using the Panel Dock name and promise to avoid using it in the future.

There is some strategy involved in how you respond to their patent infringement claim. However, I would not simply ignore it. While it is possible that they will not pursue it, that is relatively unlikely. A key tenant in patent and trademark law is "vigorous pursuit of ALL patent and trademark violations." If they do not actively pursue ALL potential violators, it opens up a meaningful avenue for others to effectively defend their patent violation activities. Again, many legal nuances to patent law.

Years agoe, as a Product Manager in the tech business, I was involved in several patent and trademark infringement suits, as both plantiff and defendant.

Larry

Steve Melton

07-24-2020, 07:49 AM

It is important that you reply to the attorneys letter indicating that you have ceased in using the Panel Dock name and promise to avoid using it in the future.

There is some strategy involved in how you respond to their patent infringement claim. However, I would not simply ignore it. While it is possible that they will not pursue it, that is relatively unlikely. A key tenant in patent and trademark law is "vigorous pursuit of ALL patent and trademark violations." If they do not actively pursue ALL potential violators, it opens up a meaningful avenue for others to effectively defend their patent violation activities. Again, many legal nuances to patent law.

Years agoe, as a Product Manager in the tech business, I was involved in several patent and trademark infringement suits, as both plantiff and defendant.

Larry

hey, you wrote "Panel Dock", is that a violation? my trademark name is "GPS Dock" and I don't care if anyone uses it in the future. so, if there is anyone out there designing and making these at home and want to call it "GPS Dock", that is fine with me. it truly is a "GPS Dock". it docks a GPS, it doesn't dock a panel. what does "Panel Dock" even mean? I just pressed a couple buttons, more docks on the way at a great price but after July 31 the price will increase.

sf3543

07-24-2020, 08:54 AM

You could always just give them away and only charge for shipping & "handling".

Mel

07-24-2020, 08:59 AM

You could always just give them away and only charge for shipping & "handling".

To quote many TV commercials. "It's free. Just pay additional fee!"

jliltd

07-24-2020, 09:58 AM

Steve doesn't reverse engineer anybody's existing design. I have worked directly with him and he is a brilliant designer who starts every item from zero. It's like the gizmo guys are in the Queen Mary plodding along in the ocean and Steve is driving a nimble water ski boat doing circles around them and jumping their wake. The cruise line company wants to eliminate the ski boat because he holds 3 passengers and that cuts into their profits.

Snowflake

07-24-2020, 11:06 AM

Steve doesn't reverse engineer anybody's existing design.
Sadly, that doesn't matter. If what you come up with is already patented by someone else, you can't market and sell it. There are laws.

Steve, I suggest you remove the word "Dock" as well. Call it a GPS Mount instead. Remove all connection to their trademark, or they will say that the "Dock" word is still "confusingly similar." It's maddening, I know, but as with Larry, i've been down this road before.

You've had a good run of it, but you've been busted and you're going to get taken to the cleaners if you're not careful. I don't want to see that happen.

Steve Melton

07-24-2020, 03:05 PM

some of the younger generation may not yet be capable of handling the future. they to quickly turn to China for the heavy mfg lifting, so, the older generation still has to show the way. self reliance, perseverance, dedication and grit are the future. stay positive and look for a brighter future and innovate. you may be surprised on what you can do if you really try.

RV7A Flyer

07-24-2020, 04:36 PM

Sadly, that doesn't matter. If what you come up with is already patented by someone else, you can't market and sell it. There are laws.

Steve, I suggest you remove the word "Dock" as well. Call it a GPS Mount instead. Remove all connection to their trademark, or they will say that the "Dock" word is still "confusingly similar." It's maddening, I know, but as with Larry, i've been down this road before.

You've had a good run of it, but you've been busted and you're going to get taken to the cleaners if you're not careful. I don't want to see that happen.

From the sound of this thread, I know where my money would be placed. Anyone care to open a betting pool on who wins this fight? :)

rv7boy

07-24-2020, 09:58 PM

JP Instruments did exactly the same thing (trademark) to Matt Dralle (creator of the original RV List) over his Fuelscan instrument, which had been on the market for years prior to JPI producing, stealing the name, and then trademarking their version.

I thought of that sad tale, Charlie, when I read this thread. I vowed I’d never buy a JPI product after it was settled. Matt couldn’t comment but it was obvious who won after the dust settled.

Steve, you’ve received lots of good advice here, not the least of which is to spend some money to consult with a competent attorney who specializes in patents, trademarks, etc. I perceive it “goes against the grain” to do so, but those folks live in a different world than we do.

I wish you well.

Steve Melton

07-24-2020, 11:30 PM

rv7boy

07-25-2020, 02:08 AM

Steve, maybe you could make the vents that were made by Larry Vetterman. Someone in the RV-4 forum is trying to buy some. Here’s the thread

https://vansairforce.net/community/showthread.php?t=185035

Might be low volume at first but there must be a demand for them.

Steve Melton

07-25-2020, 08:40 AM

because these parts can be made easily and cheaply (but 10 hrs of print time to get the best quality, that's what I do). what if they were printed in country by a local and sold by that company and I allow them to use the .gcode and trademark name. that would save on shipping costs. what about Australia or Brazil? I hate going to the post office anyway and that way the lawyers would also need to fight in multiple countries. I press the button to send the file and they press the button to print. the .gcode will ensure the print speeds and quality. this method seems to make sense from an economic standpoint and would allow users to cut the shipping and any customs costs. put a made in Brazil sticker on it because it's true. it's a thought.

and taking another step on this thinking. I supply the printer, the material and the .gcodes and assign a territory... like Australia and the vicinity. you print from you own independent company. you never know where this kind of sharing of capabilities could lead. put the plastic in the printer, select the part you wish and press the button.

lr172

07-25-2020, 10:28 AM

and taking another step on this thinking. I supply the printer, the material and the .gcodes and assign a territory... like Australia and the vicinity. you print from you own independent company. you never know where this kind of sharing of capabilities could lead. put the plastic in the printer, select the part you wish and press the button.

depending upon the details of the arrangement, who is marketing and collecting revenue, that is either franchising or outsourcing. Neither will shield you from a patent infringement suit. You will still be the primary target for the attorneys. Judgements are based upon revenue lost by the plaintiff, not revenue generated by the defendant. If I rob my neighbors house but donate the proceeds to charity, I will still be convicted of a crime; no need for me to benefit in order to be convicted. Patent infringement is essentially theft and the laws are similar, though penalties are focused on monetary damages and not incarceration.

Larry

Steve Melton

07-26-2020, 07:32 AM

getting some wheel chocks ready to ship. the red color really makes them stand out. a plastics cleaner will give them a nice gloss. use the same cleaner as for the canopy. these are probably not for everyone since they are expensive but they really grip, look good and are personalized, compact, and can withstand a full power runup with only light braking applied. also available in black color. I'm thinking about adding a yellow color option for these.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3942.JPG

Steve Melton

07-26-2020, 09:35 AM

what about a vending machine printer? say you want a red wheel chock with the your N number for 5.00-5 wheel or a GPS dock. press a couple buttons, come back in a couple hours and it's done. perhaps do that at Oshkosh and put it by a water fountain at a bench with an umbrella so you could sit and watch the part being made if you like. you may even fall asleep on the bench while listening to the printer droning on. maybe I'll set up a booth at Oshkosh next year and print on-site. load a printer in the plane and go.

Steve Melton

07-26-2020, 11:10 AM

Northernliving

07-26-2020, 11:44 AM

are any users opting for On Shape CAD software? they seem to be getting good reviews and the team at DarkAero uses them. it's cloud based and everything is automatically backed up and multiple people can work on the same project if desired. BTW, the kids at DarkAero are the ones I watch on YouTube. it's becoming exciting. these kids have the right stuff. NO FEAR! and their minds are working at high levels and they are all working together. like the Apollo program.

https://youtu.be/0YIootlEMZg

Have also watched DarkAero with much interest. Quite a team of brothers. I've also watched Mike Patey's scrapy build with similar interest. What these guys do in an evening is simply amazing. https://www.youtube.com/watch?v=KPqgaoe18KY

Snowflake

07-27-2020, 07:18 AM

are any users opting for On Shape CAD software? they seem to be getting good reviews and the team at DarkAero uses them. it's cloud based and everything is automatically backed up and multiple people can work on the same project if desired.
OnShape was designed by the same people who brought you Solidworks. I have only played with it briefly but it appears to be very similar, albeit cloud based and fully integrated with the cloud.

The cost is about the same as SW for each user, ~$2500/year.

Steve Melton

07-27-2020, 08:18 AM

OK, here is my response to the AirGizmo Lawyers.

Gail,

RVPlasticParts is a custom 3D printing company. I design and print parts from my basement. We have a limited inventory. In fact our entire inventory of parts exist in 3 small bins. Everything is custom made upon order. The customer inputs the dimensions, color, and feature option in the website and I print. I did not understand that "Panel Dock" was a registered trademark. I have removed the phrase "Panel Dock" from the website, RVPlasticParts | United States
. I do not have any affiliation with China or anyone else and operate from my basement in the United States only. I do not believe I have infringed on any patent rights. If you do, please review our products and make your argument with details know to me.

regards,
Steve Melton

**

the Lawyer said I would be hearing from him.

my prop should be back in about a week and I can install it and begin to prepare for a flight to Texas for a trial.

https://hosting.photobucket.com/images/hh519/semelton500/DSCN3945.JPG

Steve Melton

07-28-2020, 11:57 AM

I need the case to be very clear in the trial. I looked at the claims made by the Airgizmo patent and compared it to my GPS Dock. I stopped part way thru claim 1. Do you think I have a chance?

all of the RVPlasticParts GPS Docks use this approach except for the 760 GPS Dock that has a slide lever release to the Garmin mount.

https://hosting.photobucket.com/images/hh519/semelton500/patent_review_1.png

https://hosting.photobucket.com/images/hh519/semelton500/patent_review_2.png