How's the pitch of the propeller? You'd probably want to use something like APC 12.25x3.75 (yes, that's 3.75" pitch) on a high-revving 2-stroke engine. I've got a Saito .82 on mine, spinning an APC 14x4W, but that's a 4-stroke engine. I can't fly fast enough to have any flutter problems , although I haven't tried a vertiical dive on full throttle.