ORIGINAL: brewski
I'm looking for ideas on how to deal with my DD at speeds above 140. It will pull up and right. It takes almost full left to keep it straight at WOT. It has no twist in the frame at all. Looks perfect. I was thinking about working with the motor thrust.
As discussed in another thread, I had the exact same problem and it started after about 80 flights and much abuse. for around forty more flights I did many things like strip the covering off to check and reinforce everything to find and correct the problem. I also changed the radio and servos. I got a couple of good flight and then it started again. Very frustrating. It flies perfect until it hits that high speed point and then pulls hard up and right.
I think you will find that it is out of trim from that point forward at any speed during that flight. This points to the airframe. I finally crashed mine and was happy about it because of the frustration of the problem. I built a new airframe and things were wonderful again. I have heard of a couple of others that have the same problem. I really hope you find the problem and I would really like to know what it is. However, engine thrust is not the answer IMO.