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Search: Posts Made By: Larry DeCamp
Forum: RV Photo/Video URLs 09-26-2022, 05:48 AM
Replies: 51
Views: 4,627
Posted By Larry DeCamp
Abwaldai comment observation

For us guys not working anymore or raising kids, it is not conspicuous consumption to spend your money. I have never seen a brinks truck in a funeral procession ! It has no value where you are going.
Forum: RV-14 09-25-2022, 07:42 PM
Replies: 7
Views: 514
Posted By Larry DeCamp
Adjustments ?

With an intelligent device like G3x, there is no adjustment. You program the input value corresponding to gallons. I cannot speak to how a voltage driven readout would be handled.

For my RV4, the...
Forum: RV-14 09-24-2022, 05:02 AM
Replies: 7
Views: 514
Posted By Larry DeCamp
CEIS simplicity

Because of the extreme difficulty of access to the fuel senders between the tank and the fuse, the NON CONTACT nature of the CEIS device suggests trouble free reliability for a long time relative to...
Forum: RV-14 09-23-2022, 07:17 PM
Replies: 7
Views: 514
Posted By Larry DeCamp
Wayne, you said it.

One in each tank that's accurate when tanks are approaching low, plus fuel consumed from FF device and you are in control.

I installed low level sensors ( electronic eyes ) to enunciate calibrated...
Forum: Painting your RV 09-22-2022, 06:52 PM
Replies: 16
Views: 987
Posted By Larry DeCamp
Specifically aluminum skins

Good point regarding fiberglass vs aluminum suggestions. West 105 sticks annoying well to aluminum when you don't want it to. Since it does sometimes “Pop off”, I don't get confidence in it is a “go...
Forum: RV Building Tips/Techniques 09-22-2022, 05:25 AM
Replies: 4
Views: 241
Posted By Larry DeCamp
If you do convert to 1/4 turn.

One challenge to be careful of is the location of flange that holds the female component. Getting exactly right for good height match up when tightend. Not pushing Skybolt at all, just a reminder...
Forum: RV-7/7A 09-13-2022, 05:39 AM
Replies: 10
Views: 879
Posted By Larry DeCamp
Hex rod improvement ?

My 2009 3B kit had hex rods. My 1999 RV4 kit has round rods. What is the shortcoming of of the round rods if you follow air speed suggestions for flap deployment ? I can easily replace them, just...
Forum: RV General Discussion/News 09-12-2022, 05:56 AM
Replies: 44
Views: 3,507
Posted By Larry DeCamp
Mark valve stem

The laser idea is cool. I just drilled a piece of aluminum with two small holes . One was for the bolt in gear leg threaded cap, and the other was for a center punch or marker corresponding to the...
Forum: RV General Discussion/News 09-11-2022, 05:01 AM
Replies: 44
Views: 3,507
Posted By Larry DeCamp
Access hole size

I have small holes in the fairing that will pass a 10mm socket to remove the Michelin inner tube stem cap. The hole is so small I donít cover it. I could turn custom plastic plugs like Scott...
Forum: Traditional Aircraft Engines 08-30-2022, 06:16 AM
Replies: 4
Views: 668
Posted By Larry DeCamp
Superior 360 /champion filter/B&C 410 pad alternator

The filter barely clears the alternator but it does. 3.320 ish OD. Canít post pics. Send email for pic if desired.
Forum: RV-8/8A 08-28-2022, 06:10 AM
Replies: 13
Views: 1,257
Posted By Larry DeCamp
Carbon/glass lamination ?

Several reference above about combining glass and carbon. Long ago The Horton School of composites made the point the thermal expansion rates are significantly different.
So, is it OK to combine...
Forum: Tools 08-14-2022, 06:18 PM
Replies: 6
Views: 658
Posted By Larry DeCamp
Look up Lower Explosion Limit

I have used CONTINUOS compressed air flow in a car tank to to fuse a punctured plastic tank. There are no doubt experts here who can comment on this simple option.
Forum: RV-3 08-13-2022, 10:39 AM
Replies: 21
Views: 1,613
Posted By Larry DeCamp
Melís point well taken.

Wing mods are no big deal when building.
My point was there have been a lot of fun hours flown with standard category aircraft. I suspect a lot of RVís become poorly conceived (engine and...
Forum: RV-3 08-13-2022, 05:05 AM
Replies: 21
Views: 1,613
Posted By Larry DeCamp
Why are wing mods a big concern

Should we ground all Cessnas with standard category 4.4g wings ? What am I missing ?
Forum: RV-3 08-11-2022, 12:19 PM
Replies: 21
Views: 1,613
Posted By Larry DeCamp
What is your mission ?

A 160HP 3B is a pretty hot toy. By contrast, an 0200 3A would be light and nimble for safe fun flying without CN1 and CN-2 mods. Wing tanks are not required for simple short trip fun flying. Space...
Forum: RV Building Tips/Techniques 08-08-2022, 06:50 PM
Replies: 30
Views: 1,604
Posted By Larry DeCamp
Cowl to spinner gap

Donít forget the Dave Anders approach to capturing lower cowl airflow with a felt seal on the crank extension. This gives some flexibility to the spinner/cowl gap options. Your sense of aesthetics...
Forum: RV Building Tips/Techniques 08-08-2022, 04:24 AM
Replies: 30
Views: 1,604
Posted By Larry DeCamp
Sag allowance ?

The washer makes a nice reference and aesthetically pleasing starting point. The wild card here is how much sag to anticipate and accommodate. Some folks say they get none and others inquire about...
Forum: RV Building Tips/Techniques 08-07-2022, 07:47 PM
Replies: 30
Views: 1,604
Posted By Larry DeCamp
Rocketdoc: an option to consider

You can trim the lower rear of the cowl to drop the front and open the gap to the spinner. This will likely eliminate a lot of custom micro/flox work and preserve the molded periphery of the spinner...
Forum: RV Ongoing Maintenance Issues 08-05-2022, 06:35 PM
Replies: 4
Views: 678
Posted By Larry DeCamp
P thread drift,

I have wondered why the heat or fresh air comes into an RV cabin. Sure, there are small leaks at numerous places like flaps, rudder cables and empennage. But can these account for the significant...
Forum: The RV Grin 07-23-2022, 01:19 PM
Replies: 1
Views: 814
Posted By Larry DeCamp
4 vs 8

Is an RV 8 less sensitive to passenger weight than an RV4 ?
Forum: RV Building Tips/Techniques 07-17-2022, 08:11 AM
Replies: 8
Views: 905
Posted By Larry DeCamp
Vinyl will bond to epoxy and soften in solvents

Electrical tape and anything vinyl can work and can fail depending on chemistry .
Polyethylene based tapes are certain to release and also protect adhesive and substrate under it.
There are...
Forum: RV-4 07-13-2022, 06:40 PM
Replies: 9
Views: 1,226
Posted By Larry DeCamp
Stress relief

The basic bubble was overblown where it joined the rear seat bulkhead shape. This is a natural outcome of the drawing process. So I made a wooden form to match the aluminum tailcone at the rear seat...
Forum: Painting your RV 07-11-2022, 05:16 AM
Replies: 22
Views: 2,511
Posted By Larry DeCamp
Water borne or solvent based ?

This decision will take your research down a fork in the road to material selection.
Forum: RV-4 07-10-2022, 05:23 AM
Replies: 9
Views: 1,226
Posted By Larry DeCamp
+ 1 for Jeff at Airplane plastics

He even did a stress relief for me on a wood form I made to eliminate any bending.

Suggestion: For your tailcone skin, think about using an epoxy putty to fill the gap between formers and skin...
Forum: RV General Discussion/News 07-08-2022, 07:59 AM
Replies: 31
Views: 3,069
Posted By Larry DeCamp
Skybolt vs screws vs hinge

My 3 had hinge on sides and skybolt on firewall.
Hinges are a PITA and Rivets pop the filler over them. You could drill holes in the hinge flange and epoxy a glass tape over it to create an epoxy...
Forum: RV Building Tips/Techniques 07-05-2022, 06:36 PM
Replies: 12
Views: 1,677
Posted By Larry DeCamp
Etch primer ?

Many automotive primers are claimed to be corrosion inhibitors. Stop by your auto refinish outlet and discuss a solution.
Forum: RV-3 07-02-2022, 10:24 AM
Replies: 35
Views: 4,143
Posted By Larry DeCamp
An afterthought

Using the engine cylinder head bolt preload principal, you could stiffen the rod leg with the backing bar to resist the maxlmum deformation expected ( reasonably practical ) and it should act like...
Forum: RV-3 07-02-2022, 08:36 AM
Replies: 35
Views: 4,143
Posted By Larry DeCamp
Antisplat on the right track.

The video for the nose wheel gets to the heart of the matter. The steel clamp on the MIDDLE of the of the steel rod is the critical ingredient . This is the end game for the Adel Clamp uncertainties....
Forum: RV Building Tips/Techniques 07-02-2022, 04:59 AM
Replies: 5
Views: 867
Posted By Larry DeCamp
3M 2216

John,
I did the green loctite thing with initial success but had some leakage after a while. I use JB weld for cosmetic filler but I question its ability to adhere and penetrate the tiny source of...
Forum: RV-3 07-01-2022, 01:59 PM
Replies: 35
Views: 4,143
Posted By Larry DeCamp
Antisplat clamp ?

Ralph~,
`Can you describe the clamp concept in case Antisplat doesnít chime in. It is my opinion you can optimize bending modulus and section modulus to perfection, but loose it all with minuscule...
Forum: RV-3 06-30-2022, 06:27 PM
Replies: 35
Views: 4,143
Posted By Larry DeCamp
Why not steel ?

Great to hear AL works. I expect a modulus vs. weight comparison with steel could be revealing. How would holes in the flat bar enhance the outcome ? Great work David, thanks. Any energy left to...
Forum: RV-4 06-30-2022, 05:01 AM
Replies: 3
Views: 531
Posted By Larry DeCamp
What is correct oil level to calibrate dipstick ?

I had to shorten the fill tube to clear the James cowl with my Superior -360 engine. I need to reposition the dipstick ( with the tail down of course).

I have concluded that the oil measured in the...
Forum: Electrical Systems 06-24-2022, 10:19 AM
Replies: 21
Views: 2,886
Posted By Larry DeCamp
Draker suggestionm

Any local automotive electric shop has dies and tools for a secure job. They do eveything from bulldozers to fire trucks where where reliability counts.
Forum: RV Building Tips/Techniques 06-21-2022, 06:42 PM
Replies: 3
Views: 392
Posted By Larry DeCamp
Heads up on Skybolt fasteners

I love them , BUT:
If you use retainer rings, it is hard to get the cowl on with the studs sticking out trying to scratch everything.
The arc of the oil door probably wont allow the studs in the...
Forum: Primers 06-18-2022, 04:50 PM
Replies: 17
Views: 1,939
Posted By Larry DeCamp
Other options

nason, Spies Hieker,stewart systems.
Forum: RV-4 06-16-2022, 04:53 AM
Replies: 12
Views: 1,366
Posted By Larry DeCamp
RV 4 specific obseration

I had planned to mount a steel plate behind the spar on the two top, inner most 3/8 bolts through the heavy steel doubler supplied buy Van. This may not be rear enough for you as the belt manufacture...
Forum: RV Ongoing Maintenance Issues 06-13-2022, 04:29 AM
Replies: 24
Views: 2,871
Posted By Larry DeCamp
What about this Steve ?

Make an elbow form out of foam sealed with West 105. Wrap it with Dan’s Ultra Black impregnated glass tape as thick as you like. Pour in the Acetone and install ��
Forum: RV Building Tips/Techniques 06-12-2022, 10:33 AM
Replies: 20
Views: 1,959
Posted By Larry DeCamp
Just athought regarding Adel clamps

Make your own for wiring out of .032 aluminum sheared to width. Slip pvc or shrink wrap over it and bend to requirements. About any style tinnerman/nut/thread should hold wires ?
Forum: RV General Discussion/News 06-08-2022, 04:09 AM
Replies: 5
Views: 1,117
Posted By Larry DeCamp
Angle iron legs

With the engine and mount off, just make two legs that bolt on the fuse with mount bolts at the firewall. Get fancy and put some HF wheels on the end of the legs. X brace them for “suspenders”.
Forum: RV General Discussion/News 06-02-2022, 12:29 PM
Replies: 22
Wax
Views: 3,313
Posted By Larry DeCamp
Dan et.al.

how do you avoid a dry wax ring in the low spots around the flush rivet heads ?
Forum: RV-3 06-01-2022, 07:01 PM
Replies: 17
Views: 1,749
Posted By Larry DeCamp
To Justinuzza

I sent a PM but maybe you didnít get it.
Thin trailing edges, even if straight cause more stick force.
You will get lots of advice to Bump the trailing edge to increase radius. This will logically...
Forum: Traditional Aircraft Engines 05-28-2022, 05:07 AM
Replies: 33
Views: 3,721
Posted By Larry DeCamp
Regarding auto plug inserts

Some potentially useful observations:

Copper on the the BRONZE threads of the insert and the larger diameter encourage the insert to stay in the engine more often than not.

Graphite on the smaller...
Forum: Traditional Aircraft Engines 05-27-2022, 11:55 AM
Replies: 33
Views: 3,721
Posted By Larry DeCamp
ATS2612 from Spruce

So far no mention of ATS2612 graphite? Copper does get really viscous and feels like your pulling threads removing the plug. This graphite stuff is very thin and plugs do come out easily. Heat...
Forum: Painting your RV 05-18-2022, 04:57 AM
Replies: 12
Views: 1,740
Posted By Larry DeCamp
Smile Adhesion ?

Sometimes west 105 micro can be popped off when cleaning up where you donít want it. I am at this point in paint prep as discussed above.

You are saying purposful sanding is good enough for the...
Forum: RV Building Tips/Techniques 04-25-2022, 04:18 AM
Replies: 5
Views: 971
Posted By Larry DeCamp
Good wear resistance

I have high wear areas coated by my gunsmith. Examples are instrument panel, throttle quadrant aluminum, floor panels you step on , etc.

Fantastic results and he uses the oven bake process. Did this...
Forum: RV Building Tips/Techniques 04-22-2022, 04:47 PM
Replies: 6
Views: 720
Posted By Larry DeCamp
Polyethylene

Tape or film, your call. Packing tape is terrible to remove when needed. Big box home center has it all.
Forum: Glass Cockpit 04-20-2022, 07:12 PM
Replies: 11
Views: 1,066
Posted By Larry DeCamp
Touch screen life span ?

No bias here about touch screen convenience. I have had Ifly 720,740 and g3x.
Cell phones, tablets and my Ifly 720 screen die. So does any expert here have a comment on touch life expectancy vs non...
Forum: Tools 04-19-2022, 04:57 AM
Replies: 25
Views: 2,734
Posted By Larry DeCamp
Boeshield type alternative

Grizzley Tools sell a can of jelly from Slip It Industries for this purpose, table saws ,planers etc. smears on easy and dries. Not a silicone, I think its more Boeshild, paraffin based.
Forum: RV General Discussion/News 04-14-2022, 06:54 PM
Replies: 5
Views: 532
Posted By Larry DeCamp
Call Rocket Bob

Call Rocket Bob
Forum: Safety 04-11-2022, 05:26 AM
Replies: 7
Views: 1,065
Posted By Larry DeCamp
Fuel tank vents

The plans suggest a tube up the firewall and down through the floor.

The ďRocketĒ vent is two coils at the root rib and out the floor.

There is testimony here that pressure under the wing will feed...
Forum: Tools 04-08-2022, 11:25 AM
Replies: 6
Views: 924
Posted By Larry DeCamp
Some facts of life to ponder

I bought a Cleveland die recently and had a question regarding the fit of my number 8 flat head screws. They had Bob Avery call me because that was where the die came from.

Bob was so helpful and so...
Forum: RV-10 04-08-2022, 06:45 AM
Replies: 24
Views: 6,064
Posted By Larry DeCamp
Vent physics questions ?

Good info above about vent line ends, re: squared off/angled/ and rivet heads. Apparently the pump suction can overcome realistic negative air pressure.

I employed the ďrocket styleĒ double ring of...
Forum: RV Building Tips/Techniques 04-05-2022, 06:24 AM
Replies: 14
Views: 1,771
Posted By Larry DeCamp
Another option

Fab your doubler to fit the fuse skin to your liking.

Glue the doubler in place with 3M 2216.

Mark and drill mounting holes from inside or outside.

Enjoy a beer while thinking how easy that was 😊
Forum: RV-4 04-04-2022, 04:43 AM
Replies: 20
Views: 2,146
Posted By Larry DeCamp
Vans fitting

Any pictures of the fitting ? What do they call it on the website ?
Forum: Glass Cockpit 04-01-2022, 01:56 PM
Replies: 17
Views: 2,021
Posted By Larry DeCamp
Krea question re. Input Config Digital ??

I have been through the config info for GDU460 / GEA24. I do not find a place to choose Digital as opposed to the other two sources resistance or capacitance. Any guidance would be appreciated...Larry
Forum: Glass Cockpit 03-31-2022, 12:05 PM
Replies: 17
Views: 2,021
Posted By Larry DeCamp
ZX-14 response

I just went through this with Ceis and G3Expert. The power is 12v from pin 34 & 35. The signal voltage should be 2.5v from the Ceis sender. I Have not resolved what the GEA24 is looking for. Docs say...
Forum: Glass Cockpit 03-30-2022, 04:37 AM
Replies: 1
Views: 371
Posted By Larry DeCamp
G3x wiring to Kavilco sensor ?

Garmin docs show all Kavilco sensors ( OP / FP/ MP etc )wired with shielded. The sensors have plain wire leads. Is Shielded really required? Your experience would be helpful.
Forum: RV Building Tips/Techniques 03-29-2022, 06:53 PM
Replies: 14
Views: 1,567
Posted By Larry DeCamp
Thanks STU

The left tank has what looks like a sender. It had a flop tube but I removed it.
There are no wires visible between tank and spar.
So, If I am willing to risk the sender is sealed well, are there no...
Forum: RV Building Tips/Techniques 03-29-2022, 03:22 PM
Replies: 14
Views: 1,567
Posted By Larry DeCamp
How to remove fuel tank.

I want to double check my second hand (bought the project) tanks for bubbles before painting. My concern is no access to the rear, so they must come off.

I am aware to put thin a sheet under the...
Forum: Glass Cockpit 03-28-2022, 12:30 PM
Replies: 3
Views: 501
Posted By Larry DeCamp
Sheilding requirments ?

Thanks to all. CEIS and Garmin confirm the latest GEA24 docs do not specify 12V is required. FWIW, 2.5V are the correct output from the CEIS sensor. Both acknowledge a Garmin update for EXPERIMENTAL...
Forum: Glass Cockpit 03-25-2022, 12:23 PM
Replies: 3
Views: 501
Posted By Larry DeCamp
Help with GEA24 / Ceis digital level sensors

I have confirmed 5V at sensors. The touch 46xx shows EIS error on the screen.I want to confirm float motion function before prosealing the sensor in the tank,as CEIS suggests. Is there a way to do...
Forum: Traditional Aircraft Engines 03-25-2022, 06:18 AM
Replies: 20
Views: 1,711
Posted By Larry DeCamp
Filter data confusion

I have done surface area calcs including pleat depth . And following guidelines for cfm requirements for an IO360, I built a custom FAB to match.

The FAB didnít work out well for the SamJames cowl...
Forum: RV-4 03-22-2022, 04:53 AM
Replies: 4
Views: 951
Posted By Larry DeCamp
Shelf

Be sure to leave plenty of room on the sides like flyhub. Access to rudder peddles , brakes etc , else you will be stripping the cockpit and laying on your belly 😒
Forum: Tools 03-21-2022, 05:15 AM
Replies: 2
Views: 499
Posted By Larry DeCamp
Need torq set tip for 10-32 screws

Does any body have a tip they will sell. On line appears to be minimum pack of 5 witj $12 shipping 😨
Showing results 1 to 64 of 500

 
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