I've never had flutter in mine.

Setup: JR 8411 with CF pushrod.

The 8411 is a very strong servo, yet notorious for having slop in the geartrain. Yet my stab has not fluttered.

At one point (after about 50 flights) my plane started to oscilate in pitch over 1/4 throttle. It was a porpoising motion. I found the set screw at the stabilizer horn had come loose. Once I tighted this (and put ca on it so it couldn't loosen again) I had no more problems.

It is a uniquely flying plane. Hope you sort out the problem with yours and enjoy it.


BTW although there is a very small amount of play in the cf spar/bb joint I have not noticed any adverse effects.

Joe