ORIGINAL: Electriceddie
Now I am getting confused, earlier in this thread I said I was having to give about 1/8th inch of up elevator at full throttle. Flying at full throttle with the up trim to get it to fly straight would mean it to need some down thrust, correct? Then when I am flying at 1/4 stick or less it pulls up because of the up trim correct? So if I nuetralize the elevator and give some up thrust would that work? So I am getting confused now does it need up thrust or down thrust? I would like to get it to fly straight and level hands off at full power with the elevator at nuetral.
Now I am also wondering after the last to posts if, I should just go fly it and trim it for full throttle straight and level how would she handle at dead stick. During the past races I really ran full out at 10 laps until we were done then we cut the engines to fly them in dead and I did not recall having a problem until I tried to fly around 1/3rd or at 1/2 throttle. Is that the design? no 1/3rd or 1/2 throttle flight capability? Just go "Fast and Turn Left" until your done with 10?
Ed
To get it to fly straight and level at full power with no elevator trim yoiu will need to:
1) Make sure that there is no up/down thrust
2) Make sure the balance point is 2 7/8" - 3" back - I like to start at 2 7/8".
3) Fly it staight and level at full power - if you require up elevator then either shim the back of the stab or the front of the wing until the elevator trim in neutral
4) Fly it knife edge and on a 45 degree bank as you would actually spend m ost of your time doing while racing - if the plane tends to creep in toward the center of the course, you may want to add a quarter or two to the tail and revisit 2/3 again.
Repeat 2-4 until it grooves the course in a race attitude
If one wing pushes out consistently during a full elevator turn - add a quarter(s) to the opposite(lighter) wing until both wing tips track through the same vertical plane.
Remember - this is not a sport arobatic plane and flying perfect straight and level is not exactly what you want when racing. There is much written about this by far more accomplished pilots than me. Dub Jett's crap trap series is an excellent place to start.
Good luck.
dan