was wondering if you could reverse the engineering of a standard motor to the effect that the shaft would stay stationary and the outer portion would spin to do this i thought that it would be better to have the electromagnet on the outside and the permanent magnet on the inner portion. now i realize that i would be losing torque by doing this (small wheel moving a large wheel) but that i would gain speed by the same principle ... so i am pretty sure that all that can be done ... i guess my real question is .. would it be practical ... for my intended application/fantasy the permanent mag would be a total of a 13 inch diameter circle and the copper wire would be in a 15 inch diameter circle. a total of 3 inches wide... the outside of the spinning surface would be 27" making a total of 84" movement per revolution. what kind of power supply would be needed to make such a motor be able to push 500 to 650lb's at 1260 RPM (approx 100mph) if you need more information i will give hat i can or just have some general formulas that i can use to try to figure out what i need to use or do to make it work ... thanks for any ones time. Edit: found a few online calculators that basically told me (mind you this calc was for a normal shaft spinning motor) that i would need approx 3000 amps@ 48V to produce 100 HP (more then enough) now i was going to have a small gas emgine working a generator to supply the need power ... is that even possible to configuresomething that cuold supply that amount of peak power ???