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..., if a 18V motor that has 130A stall is run at 12V does that also bring down the stall current by 1/3?
Quote from: gerard on October 19, 2013, 09:54:12 PM..., if a 18V motor that has 130A stall is run at 12V does that also bring down the stall current by 1/3?Yes. For an 18V motor, keep within 120A peak by keeping voltage under 14.5. I see since I started writing that you are proposing a 6-12V 133A stall motor. This seems to me to be getting quite manageable.By the way, are your motors/drivers under the control of a micro? If so, would your problem be resolved by ramping drive to the motor controllers rather than delivering full power instantaneously? Where the motor actually stalls while being driven then let the controller deal with it. Direction reverse would then be a step-fall in voltage followed by a ramp up in the other direction (PWM), alleviating the current-doubling from instantaneous reverse.