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Search: Posts Made By: DaveP
Showing results 1 to 25 of 114
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Forum: Glow Engines
10-23-2022, 10:17 AM
Replies: 17
Views: 5,588
Posted By DaveP

Piston Ring source

JumpyMan-

Bjorn Baal bought Frank Bowman's ("Ringmaster") ring business a few years ago and is the go-to place for unattainable replacement rings. I've always heard good things about both Frank's...
Forum: Seaplanes
11-21-2020, 04:38 PM
Replies: 4
Views: 2,242
Posted By DaveP

The step should be a little behind the CG, maybe...

The step should be a little behind the CG, maybe 1/2" for a 6ft span plane. The idea is to have the at-speed planing surface under the CG. If too far forward, the plane'll sit nose high and plow...
Forum: Golden Age, Vintage & Antique RC
05-02-2020, 03:30 PM
Replies: 4
Views: 1,067
Posted By DaveP

I assume your engine is a sideport one, instead...

I assume your engine is a sideport one, instead of front rotary valve. In "Engine Collector's Journal" issue #222, June 2014, there was an article on Ohlsson serial numbers. Jim Leisk compiled a...
Forum: Kit Building
01-27-2018, 04:11 PM
Replies: 7
Views: 2,139
Posted By DaveP

I built one back in 1971 and still have it,...

I built one back in 1971 and still have it, though it's not flyable now due to badly warped wings from storage in a shed over a summer 20 years ago. Covered with silk & dope, powered with OS H60,...
Forum: "1/2 A" & "1/8 A" airplanes
03-11-2017, 07:31 AM
Replies: 17
Views: 2,544
Posted By DaveP

I use Eneloop cells on all my glow-powered planes...

I use Eneloop cells on all my glow-powered planes - much better than NiCads or older NiMH, hold their charge for months and never had one go bad. I run FrSky gear, and 4 cells is plenty. AAA on my...
Forum: Glow Engines
09-22-2016, 08:35 AM
Replies: 29
Views: 16,891
Posted By DaveP

I've found two water-based polyurethanes that are...

I've found two water-based polyurethanes that are fuelproof, as near as I can tell.

15 years ago or so I built a universal engine test stand of red oak and finished it with water-based Varathane...
Forum: Golden Age, Vintage & Antique RC
09-22-2016, 05:20 AM
Replies: 14
Views: 6,791
Posted By DaveP

I got one of these from Jay and am impressed. It...

I got one of these from Jay and am impressed. It works just like it should, producing Galloping Ghost action using modern (reliable!) RC radio link. The mechanics are nicely done and look like they...
Forum: Golden Age, Vintage & Antique RC
09-06-2015, 01:07 PM
Replies: 7
Views: 1,076
Posted By DaveP

Jean-Marie Piednoir posted...

Jean-Marie Piednoir posted (http://www.modelflying.co.uk/forums/postings.asp?th=98671#1736646) an experimental GG program for the FrSky Taranis xmtr, driving standard servos with a standard FrSky...
Forum: Golden Age, Vintage & Antique RC
01-17-2015, 02:14 PM
Replies: 44
Views: 7,818
Posted By DaveP

Cliff- I built one back around 1955 - my...

Cliff-

I built one back around 1955 - my first RC. Powered with K&B greenhead .15 with 10x3-1/2 prop, doped nylon covering, Mighty Midget motor bang-bang (slow galloping ghost) rudder, 2-tube...
Forum: Glow Engines
12-07-2014, 08:30 AM
Replies: 25
Views: 6,932
Posted By DaveP

I use Sig Champion 25% nitro fuel (mix of Klotz...

I use Sig Champion 25% nitro fuel (mix of Klotz synthetic and castor oils) in my 1/2A engines. Love it! I use Morgan's Omega (mix of Klotz synthetic and castor oils) in larger plain bearing engines...
Forum: "1/2 A" & "1/8 A" airplanes
11-23-2014, 05:38 AM
Replies: 19
Views: 4,241
Posted By DaveP

John- Be sure to use 1/4"x3/8" wing L.E., not...

John-
Be sure to use 1/4"x3/8" wing L.E., not the 1/8"x3/8" erroneously written on the plan. For electric power, I'd likely use pretty light 1/16" balsa for the fuselage sides, bottom, etc. - no...
Forum: "1/2 A" & "1/8 A" airplanes
11-20-2014, 11:09 AM
Replies: 19
Views: 4,241
Posted By DaveP

Vern Clements' 28" Bi-Gone

Drat! I just now, over 4 years later, realized that I never mentioned that the little Bi-Gone flies! Well, maiden flight was on 26 July, 2010, and it flies great!

Power, with 25% SIG fuel and...
Forum: Scratch Building, Aircraft Design, 3D/CAD
05-20-2014, 03:41 PM
Replies: 23
Views: 16,177
Posted By DaveP

I've run ACAD14 fine on a 64bit Windows 7...

I've run ACAD14 fine on a 64bit Windows 7 Professional machine for over 2 yrs, running it under Microsoft's Virtual PC and Windows XP Mode. XP Mode runs in a window on the Win7 desktop, and ACAD14...
Forum: "1/2 A" & "1/8 A" airplanes
04-11-2014, 01:19 PM
Replies: 30
Views: 16,498
Posted By DaveP

I have one in a 71" Sig J-3 Cub - almost 400...

I have one in a 71" Sig J-3 Cub - almost 400 flights so far. Silk & dope covering, 3.75 lbs, one more pound on floats. 10x6 MA prop, 12.5% nitro, 20% synthetic oil. Flies great on wheels or floats!
...
Forum: Glow Engines
12-17-2013, 10:14 AM
Replies: 19
Views: 1,985
Posted By DaveP

check Mixture Control Valve

The FSR series were/are terrific engines, easily up to the newer OSs. I have 5 FSR-40s and 6 FSR-45s and love them. Check that the Mixture Control Valve (idle adjustment) hasn't been adjusted too far...
Forum: Scratch Building, Aircraft Design, 3D/CAD
09-30-2013, 10:31 AM
Replies: 13
Views: 4,616
Posted By DaveP

Are you aware of the 1/3 scale version by Frank...

Are you aware of the 1/3 scale version by Frank Iltzsch in March 1981 "Model Builder"? 96" span, OS FS-60 engine. His is a model of Mike Kimbrel's VW-powered replica. He made booms for his 1/3 scale...
Forum: Scratch Building, Aircraft Design, 3D/CAD
09-29-2013, 03:46 PM
Replies: 14
Views: 885
Posted By DaveP

I run ACAD 14 on my Windows 7 Pro machine using...

I run ACAD 14 on my Windows 7 Pro machine using Microsoft's free Virtual PC software. Check out Microsoft's Windows XP Mode page,...
Forum: Seaplanes
07-16-2012, 10:51 AM
Replies: 7
Views: 1,148
Posted By DaveP

RE: Where should the step be?

Definitely step should be slightly behind the CG. When planing and about to lift off, the plane is supported on the small area just forward of the step and should have slight positive angle of...
Forum: RC Scale Aircraft
06-30-2012, 07:41 AM
Replies: 31
Views: 7,379
Posted By DaveP

RE: Blushing Dope

Blushing is caused by water vapor in the air condensing on the painted surface. The higher the humidity, the higher the dewpoint (temperature at which the vapor condenses). As dope thinners...
Forum: Golden Age, Vintage & Antique RC
07-06-2011, 01:11 PM
Replies: 8
Views: 1,726
Posted By DaveP

RE: Penn Valley 54 inch Quaker?

I built one in 2005. Fourth one down at http://plumpe.home.mindspring.com/mair.html . OS FSR .10, 3xHS-81 servos, 300mah battery. Plenty of power on 15% nitro. An amazing flyer on either wheels...
Forum: Golden Age, Vintage & Antique RC
05-15-2011, 02:48 PM
Replies: 3
Views: 1,304
Posted By DaveP

RE: Trixter Beam Colors

Me too, Dan, but mine was maroon & white and scalloped differently. I still have my K&B .15 and some nylon for covering, but want to run my bang-bang rudder through modern RC elex. Good luck with...
Forum: Golden Age, Vintage & Antique RC
05-15-2011, 12:53 PM
Replies: 3
Views: 1,304
Posted By DaveP

RE: Trixter Beam Colors

Here's a photo from a recent auction.
Forum: Glow Engines
04-20-2011, 04:00 PM
Replies: 49
Views: 11,184
Posted By DaveP

RE: OS 55AX Eating up Glow plugs

Try lowering the compression ratio a tad by adding a shim of thin, soft metal foil. I use Tuck "Aluminum Patch & Seal Tape", with the adhesive removed. It's about .0022" thick and cuts easily with...
Forum: Glow Engines
01-19-2011, 05:53 AM
Replies: 33
Views: 11,771
Posted By DaveP

RE: Webra T4-60 Owners Manual?

I wasn't successful getting higher-res versions of Kmot's scans, but Mike Timm came through and sent me good scans of three Webra documents he had. I've done some editing and present them below.
...
Forum: Gas Engines
01-16-2011, 08:08 AM
Replies: 305
Views: 58,383
Posted By DaveP

RE: XYZ ENGINES

Note I'm assuming your engine is not one of the first (which had no collar on the threaded prop shaft) and does indeed have that collar. The collar is not a separate item, but is a projection on the...
Showing results 1 to 25 of 114
 
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