ORIGINAL: ea01bg
One problem I've had with many of my Trex 600 scale birds is flex in the frames. On three of my Trex 600 scalers the top of the mechanics would have side movment. After going througn the bearings and bearing blocks I found that it was actualy the frames flexing slightly. I solve this by anchoring the top of the frames booth fore and aft of the main shaft to bulkheads on the fuse. On my century 500E I anchored the fuse to the top and then ran anchoring from the top of the mechanics to the base at an angle.
Yess...I've had similar issues with all my MD's, but not with others fuselages like AS350, Bell UH-1 and Agusta, I really don't know why this happen more with MD's bodys, usually I have more problems with vibes also..
Manuel