I recently purchased a Treadmill motor from ebay with the intent of upgrading the motor on my mill. The motor has the following specs: H.P - 2.5 Volts - 90 (DC) Amps - 17 Duty - Cont. RPM - 4700 I am having trouble specing out a controller for this motor which I find strange considering how many similar treadmill motors are available. The best option I've found so far is the KBMM-225D. I would link to the data sheet but the spam filter doesn't like it. I could run this with 230 volts and jumpers set to: 180 volt output - Wouldn't this half the HP rating and double the speed? 90 volt output - Would only get 1.5 hp out of a 2.5 hp motor? (but.. 16A*90V >1.5hp.. hmm) Do my assumptions seem correct or is my logic off? Any tips or links to a more suitable driver would be awesome. Thanks!