72V Test
FrankG writes in –

True “Make Material”!!! in this section on the Dirt-E Bike, a $35 Chinese motor controller is hacked to either 60V or 72V at 25A, 40A or 100Amps. Schematics, PCB Layout and assembly instructions (open source).

Kawasaki KE-175 Dirt-E Conversion to Electric  – Part 2 (YK42-x tender) – Link & part one.