Greetings, I planning to connect the stators in series to form a 3 phase, 12 coil per phase configuration. Yes, vertical coil alignment between the stators is very important, thanks. I am puzzled by the affect of adding all the stators and rotors has on the rotational speed when spinning the unit by hand, it still spins with no cogging. The first stator and rotor set was I spinning by hand and it rotated freely. As I added the next stator and rotor, still spinning by hand the rotation speed decreased. Added the third stator and last rotor, still spinning by hand, no cogging but rotation very slow. I will have to finish the wire connections and measure output. Because the stators are wired in 3 phase it maybe the natural affect of the opposing fields or reflected impedance , but really do not know. I also noticed that the stators will shutter back and forth or oscillate without the outter case installed. I should know more I a few days. Enjoy the day.