I’m using an AC motor and 500 A, 144 V controller from Hi Performance Electric Vehicle Systems. At first I ordered the AC76, a larger motor with a lot of torque, but it had a misplaced winding and burned a black streak down one of the phase wires, making my maiden voyage disappointing. I swapped it for a smaller AC51 motor, which lightened the load by about 100 pounds. I have more power than I ever need. I'm glad I went with a smaller motor. The Motor Controller combo is a great package. The Curtis controller is awesome. It has a great regenerative function. I put back massive amounts of power while simultaneously saving brake pads.
Although a liquid cooling package is recommended for the Curtis controller, I opted for the air-cooled heat sink. I mounted the controller upside down so the wires would directly meet the motor without crossing. I also like the heat sink on the top since heat rises. Two 5 inch fans keep the controller plently cool even in 100 degree weather.
< Back to Phase 1