Here's how to make a speed controller behave like a relay*, which I won't suggest for CIM motors**, but if you insist:
http://www.chiefdelphi.com/forums/sh...33#post1223033
*Interestingly, a speed controller is an H-bridge relay at it's core, just one that pulses faster than a normal H-bridge relay ever could (safely
).
**Don't test at full power. Use a joystick/variable rate to start slow and work your way up.