Hi, I wanted to see if I could take advantage of the air gap under the footpad to more effectively cool the MOSFETs. Turns out that cutting ventilation holes in the bumper can pretty significantly lower the controller temperature. I ran two laps around my neighborhood, the first one was with an unmodified OEM bumper, and the second run was with a bumper modified with holes. The motor heated up by an additional 2.7°C between the runs, but the controller dropped 3.6°C.
Run 1:
Run 2:
