Hi Dink,What are the differences between a 24v and 36v motor, both being 500 watts? Power? Better range? I'm building an e-bike. Would the 36v give the same power but better range over the24v? Both motors are rated @ 2600rpm
Things you ask depend on more than just the motor. Taking the motor at your stated ratings for face value, then:
No difference in performance. The 24V motor at 24V gives you 500W at 2600 RPM and the 36V motor at 36V gives you 500W at 2600 RPM. Equal power.
No difference in range, if your batteries were the same type and mass for the 24 and 36V systems, meaning that the energy for the 2 systems is equal (which would be Whr). Obviously the 36V battery would have to be rated at 2/3 the Ahr compared to the 24V battery.
The current in the 24V system would be 50% higher (3/2) than in the 36V system for equal performance. So you would need wires, fuse, and controller rated 50% higher, typically meaning physically larger (and maybe more costly). But this would be of little consequence to you inquiry about power and range