I was advised that a stepper motor would not produce the current we need so I built a ceiling fan alternator based upon http://www.youtube.com/watch?v=vf923InYeH8&feature=related which is supposed to make 2 amps. Mine will only do .30 under load, or even less than the stepper. The ceiling fan is a six wire, two coil motor. Using the first and second highest ohm reading, I ran these through a bridge and capacitor. Turning with an exercise machine, the motor does nearly 50vdc. Is there a different method of wiring that will reduce the voltage and increase current?