I'm 16 and and im good with all related with air gear or air treck (AT).You need to create a inverted electric motor (the rotor is outside the stator)due to make the wheel rotate using the axis( i thought about using the axis as stator and the wheel itself as a rotor. But there would be a problem, in the serie it is said that the motor power is about 4Kw a you cant make that power with this electric. (or not?)
(sorry, i think i made mistakes in speling, im spanish and i dont know very much english)
