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-   -   a couple printed ideas (https://vansairforce.net/community/showthread.php?t=147771)

Steve Melton 10-09-2020 05:59 PM

Quote:

Originally Posted by Vlad (Post 1468442)
Steve is designing and printing a fuel funnel with integral filter a big task? I use a plastic one with molded screen almost daily and itís starting to show its age. I couldnít find similar anywhere. Also store funnels have narrow neck and itís hard to keep them inserted when windy.

I'll take a look at it. I purchased another printer today with a high flow nozzle. this may be a good application for it.

koupster 10-09-2020 06:11 PM

Vlad,

Been using one like this:
https://www.amazon.com/WirthCo-32006...05881746&psc=1
A few more rubles, but better filtration:
https://smile.amazon.com/dp/B00N4UN1...5&ref=aa_scomp

Cheers, David
RV-6A kBTF

Snowflake 10-10-2020 11:09 AM

Quote:

Originally Posted by Steve Melton (Post 1468368)
recommend to take the tow bar out as well as other loose items if you plan on doing acro.... that would just be common sense.

I'd never be able to bring the towbar with me if that were the case. I rarely fly without going upside down. Definitely common sense to secure everything though, hence the desire for a strap or lock to keep the towbar in the holder.

Vlad 10-10-2020 11:39 AM

Quote:

Originally Posted by koupster (Post 1468455)
Vlad,

Been using one like this:
https://www.amazon.com/WirthCo-32006...05881746&psc=1
A few more rubles, but better filtration:
https://smile.amazon.com/dp/B00N4UN1...5&ref=aa_scomp

Cheers, David
RV-6A kBTF

Thanks David these work perfect in calm weather. Notice they both have thin tips. RV fueling openings are much larger and any wind tips the funnels over. I use a siphon pump to transfer from jerry cans.

Steve Melton 10-10-2020 04:02 PM

tow bar brackets
 
added .25 inch to the hooks. accessibility should still be OK and the bar will have a more difficult time jumping out. hole added at the bottom for optional screw in place of velcro if desired. these will fit RV7, 9.


GeoffP 10-10-2020 08:26 PM

Lugs for the wheel end of the tow bar
 
Steve,

Have you thought of making lugs to mimic the wheel tow bar bolt to attach the wheel end of your towbar to? You can keep the same basic shape to mate to the baggage compartment rear wall, just replace the hooks with outward facing lugs. This would then mean the tow-bar spring will hold it in place, i.e, place the fixed side on the top, then hold open and clamp onto the lower lug.

This might mean though that you'd have greasy grimy lugs in your baggage compartment. Just a thought though, but it would help to keep the bar more secure in turbulence etc.

Steve Melton 10-10-2020 08:38 PM

Quote:

Originally Posted by GeoffP (Post 1468655)
Steve,

Have you thought of making lugs to mimic the wheel tow bar to attach the wheel end of your tower to? You can keep the same basic shape to mate to the baggage compartment rear wall, just replace the hooks with outward facing lugs. This would then mean the tow-bar spring will hold it in place, i.e, place the fixed side on the top, then hold open and clamp onto the lower lug.

This might mean though that you'd have greasy grimy lugs in your baggage compartment. Just a thought though, but it would help to keep the bar more secure in turbulence etc.

that's a neat thought. albeit, a bit more painful getting the tow bar installed. it is difficult enough for me to reach back there because I'm getting older. I prefer to make it as easy to drop in as possible. I haven't had any trouble over the past many years with any of my baggage.... and I always carry stuff. I'm confident these tow bar brackets will be fine. I put them on my website. they are not cheap and probably not for everyone but the nice thing about these plastic brackets is the tow bar does not rattle and make any noise. at least that I could hear to the best of my ability. :) also, I wanted them to be as snag proof as possible when removing items.

the nice thing about the Van's site is that we bounce ideas around and leverage to make something as good as we can. everyone has ideas, but the people on this site typically give good honest evaluation of designs. I like your idea, see if you can make it work.

Steve Melton 10-10-2020 09:15 PM

GPS Docks
 
RVPlasticParts is printing a couple GPS Docks for GPS Dock 1 LLC for some Cessna's tonight. this kind of stuff could not be believed 5 yrs ago. they seem to appear out of thin air. print on demand to custom requirements, no inventory. I am still amazed by this technology. perfectly flat and square to .002 inch tolerance typically. if possible, print the dock to fit the panel, don't modify the panel for the dock. this saves time and effort.


Steve Melton 10-11-2020 11:10 AM

tow bar brackets
 
not too bad in dark grey. it might look good with the blue tow bar. this color appears darker without the flash. I like it.




walkman 10-11-2020 11:11 AM

Quote:

Originally Posted by Steve Melton (Post 1467011)
there are a lot of options for CAD:
FreeCad is my upcoming favorite, open source
Solidworks
Fusion 360
OnShape
etc.

And you missed my fave - OpenSCAD.

Its my primary go to now because I like to write physical objects as code and I tend to develop parametric designs. For example terminator blocks where I input the number of terminals, minimum insulation thickness, size of the stud and so on and it generates the stl file. All of this can be fully automated and scripted as well, with Jenkins for example.

Also OpenSCAD lets me create and use my own shared libraries. So over time for the radio replacement panels I make for Porsche 911's I've got a library of different options for USB or RCA jacks, different remote amp heads and various gauges. So, if someone wants a 2-gauge pod with a USB charging port and a 3.5mm stereo headset jack I just uncomment or comment out a couple of lines of code and print it.

I wouldn't recommend it if you can't write code however.

Simplify3d is the best slicer I've used and worth the $100 or so license cost.


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