Glad to see you guys are candid about how you fly em -
I did a Harrier for 3D Flyer -and Ireally liked it '.
Sold it to a good friend - who promptly lost it due to the tail group leaving it in mid flight .
Why?
he thought it was not going very fast -and relative to what he was used to - it wasn't going fast .
The big BUTT--tho is that for great 3D performance -weight must be absolutly minimal.
The kit mfgrs took a deep breath and produced models superior to th faster "3D" models -simply because they are lighter.
The result ?
flutter failure as these models ar totally unforgiving on this issue.
My own first shot at a super high power 3D model/pattern design stayed together using a tuned exhaust ZDZ40 on a 1300 sq in airframe at 11 lbs.
again BUT- wide open throttle was never used in level flight or a dive.
Power was spectacular and wing loading at 19 oz ft made for good 3D .
Our current electric stuff (no pun) is now way down on wing loading and using flat plate wings -all foam and wing loading is under 5 ozs per sq ft.-on 400 sq inches (AUW of 15 ozs inc batts.)
these will not flutter easily as the foam has such low weight to strength and stiffness.
But they will flutter -- just not come apart.
My larger stuf uses built up ailerons (see pics ) of very light full sheeted ailerons -typically tapered 2-1 from root to tip -which gives an extremely stiff aileron.