ORIGINAL: bigedmustafa
My old Tower Trainer 40 MkII ARF had a .46 FX on it and was a bit overpowered. The first time that I went to fly it, the plane shot right up off of the runway! I had to put a decent amount of downthrust into the engine mount as previously described, and that fixed the problem nicely. A washer or two behind the top of the engine mount works wonders.
I know that .46 is a little bit too much for the Avistar but I really like this setup...I usually fly it 1/2 throttle anyway however when I add full power...it climbs like crazy......I will fly it today and make the adjustments tomorrow.
Thanks guys.