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Old Jul 05, 2007, 03:12 PM
Registered User
Livermore, CA
Joined Sep 2004
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EPP P-38 Warbird, 2ch Conversion to 3ch

I've had this P-38 project on the back burner for some time. There were some design mods I had to figure out.
It comes as a molded EPP, 2ch, differential thrust plane, with a flat bottom 19" wing.
I gutted the electronics and started figuring where I could put the 3ch gear. I'm going to use a Berg4L, 2 Pico servos, run both motors off one ESC and a 2 cell lipo. I'll use the stock motors at first, then maybe go to some 12mm direct drive motors.
Since its not too slow, I wanted to go ailerons and elevator.
The problem is, its got alot of dihederal as a beginners plane.
So I went on several warbird website's to see what the real P-38 had in the way of dihederal and found a few good pics.

Now to take most of the dihederal out!
At first I was going to slice each wing at the root and glue it back to get the dihederal. But after studing the website pics, I decided to slice the fuselage on the bottom side and sand out a thin wedge, then reglue it. It worked pertty good.
Now for the ailerons and elevator. Keeping the C/G in the right place will be the problem. Butch
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Old Jul 05, 2007, 06:57 PM
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rcozstyle's Avatar
gawler, South Australia
Joined Jul 2006
3,672 Posts
Hi

Looks very interesting, will be nice to see how she flys.
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Old Aug 18, 2007, 10:51 AM
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galaxiex's Avatar
Edmonton,Canada Eh
Joined Jun 2007
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hi butch777, how does this fly? anymore pics of your conversion? How did you slit the fuse? exacto knife? did you fly it stock? sorry about all the questions

I have one of these planes on order and may convert to 3ch if it doesn't fly good stock.
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Old Aug 20, 2007, 12:00 AM
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Livermore, CA
Joined Sep 2004
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I haven't been able to work on this for a bit, I have about a dozen ARF Boomers I'm trying to get ready.
Yea, I used a xacto and EPP glued it back together. I never did fly it stock. Its just too windy here for a cheap 2ch. It will be another couple weeks before I get back to it. Butch
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Old Aug 20, 2007, 12:21 AM
my karma ranover my dogma
galaxiex's Avatar
Edmonton,Canada Eh
Joined Jun 2007
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Quote:
Originally Posted by Butch777
I haven't been able to work on this for a bit, I have about a dozen ARF Boomers I'm trying to get ready.
Yea, I used a xacto and EPP glued it back together. I never did fly it stock. Its just too windy here for a cheap 2ch. It will be another couple weeks before I get back to it. Butch
Cool, mine has not arrived yet but I just finished a 3 ch conversion on my B17 and I love it... flys great.... as a 2 ch it sucked...

Too bad it's so windy where you are, I have a bit of trouble w/ the wind here too, (praire ya know ) but we get alot of calm days too so it's ok.

I'm getting bored w/ my 2 ch stuff (blame the micro Cessna for that ) but I like smallish planes, so doing these 3 ch conversions will keep me busy.

please post when you get your P 38 done, Thanks, Dale
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Old Aug 23, 2007, 01:09 AM
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galaxiex's Avatar
Edmonton,Canada Eh
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Well I decided to post here instead of clogging up the board with another thread...

My .Buzz P-38 came in today.

Specs.
wing span. 19"
length. 14.25"
weight. 95 grams
twin motor, counter rotating 3 blade props,
2 throttle steps. (cruise and full, 3 if you count OFF)
turn with zero throttle

I did not even try to fly it w/ the stock batt since I have the batt that came in my B-17. (modded the B-17 to 3ch + lipo will post on that later)

P-38, stock batt > 5 cell nimh, 150 mAh 6.0V 1/3 aaa

B-17, stock batt > 6 cell nimh, 350 mAh 7.2V 2/3 aaa
In the P-38 it's excellent! snug fit, but thats good!

How did it fly? Very well! I am very happy with how this model performs...

It was getting dark/dusky when I flew so I turned the lights on and total flight time was at least 15 minutes. The B-17 battery had only been cycled once before so I hope flight times will increase w/ more cycles.
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Last edited by galaxiex; Nov 06, 2007 at 11:29 PM. Reason: to shorten a rather long post...
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