XBY-1,

Forgot one thing in my (as usual) wordy earlier post...

Engine torque load on the mounts is equal and opposite the torque that turns the prop. With "standard" rotation, the prop turns clockwise seen by the imaginary pilot. Equal and opposite means the 'reaction' passed into the mounts trie to roll the model counter-clockwise.

Carrier and Racing events are all flown counter-clockwise, as seen from above. We can't turn the 'deck' around, or fly clockwise in a heat when everyone else is going counter-clockwise. (HOO-BOY!!) We COULD reverse the problem torque factor by running the engine "CCW" as the "pilot" sees it. The gyro couple from lapping in 3 sec or so is much less than the couple a stunter faces in a 90° corner in 1/3d of a second.

The torque situation is familiar: Ever jazz the throttle on a big V-8 and feel the car rock in response?