I have a couple of questions. I am aware that the duty cycle of automobile starter motors is insufficient for continuous duty, but does anyone out there have any real world experience with them?
A couple of guys at work were thinking of making electric go karts to race during break time, and there is only about 5 good minutes of race time, between loading and unloading.
Questions that come to mind are: Are they PM or series wound? Can they be easily re-timed for bidirectional rotation? any cheap digital circuits out there for 100+ amp PWM?