amberwolf wrote: However it is done, you have to do something to mount the stator so it doesn't spin, if for no other reason than you have to have something to react against to get the torque from the motor into the output shaft. (as well as not twisting up the wires, though that could be done by using slip-rings).
1/5th of the torque is taken by the added stator screws, the other 4/5th of the torque are taken by the ring gear. hope this helps.
BTW, spinningmagnets, thanks for this link: http://www.emissions-free.com/catalog/i1.html