RC-Monster Forums - View Single Post - Ways to protect MMM when used with subpar batts

Bernie Wolfard · 11.03.2009, 05:39 PM

El Cheapo,

You are correct. If you lower the system voltage with everything else the same the max RPM of the motor is lower (Kv * voltage). It will spin up less aggressively when pulling the trigger and have an overall lower amp draw meaning less heat, more run time less stress on the whole system etc. You only get into trouble if you try to match the speed of a higher voltage system with a lowering one by lowering the gear ratio.

Bernie

	(#1)
Bernie Wolfard Clinically Inane Offline Posts: 59 Join Date: Feb 2008	11.03.2009, 05:39 PM El Cheapo, You are correct. If you lower the system voltage with everything else the same the max RPM of the motor is lower (Kv * voltage). It will spin up less aggressively when pulling the trigger and have an overall lower amp draw meaning less heat, more run time less stress on the whole system etc. You only get into trouble if you try to match the speed of a higher voltage system with a lowering one by lowering the gear ratio. Bernie