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General Discussions / Re: New member with dual motor setup
« Last post by Bikemad on January 17, 2024, 12:45:49 PM »I'm pleased to hear that you've got both motors working, but the 902 mini motors are unable to produce any torque in reverse due to the internal unidirectional clutch.
Without know what voltage motors and battery you are using it is difficult to know what the best settings will be, but I would not set them anywhere near the controller's maximum settings as passing too much current through the mini motors can strip the teeth off the nylon gears and also overheat the windings, which sometimes melts the insulation on the wires resulting in a short circuits:
Drawing just 10 amps at 36 volts (or 15 amps at 24 volts) equates to 360 watts, which should produce an output power of 288 watts at 80% motor efficiency, which is already more than the 250 watt rated power for the mini motors.
However, I suspect that your smaller diameter wheels and dual motors will be less susceptible to overheating as they should be under a lot less load than an identical single motor in a larger diameter wheel.
Alan
Without know what voltage motors and battery you are using it is difficult to know what the best settings will be, but I would not set them anywhere near the controller's maximum settings as passing too much current through the mini motors can strip the teeth off the nylon gears and also overheat the windings, which sometimes melts the insulation on the wires resulting in a short circuits:
Drawing just 10 amps at 36 volts (or 15 amps at 24 volts) equates to 360 watts, which should produce an output power of 288 watts at 80% motor efficiency, which is already more than the 250 watt rated power for the mini motors.
However, I suspect that your smaller diameter wheels and dual motors will be less susceptible to overheating as they should be under a lot less load than an identical single motor in a larger diameter wheel.
Alan