Quote:
Originally Posted by lutach
Lower Kv motors have more torque and require less AMPs to make the same power as a higher Kv. Simply put it this way:
8S lipos 29.6V X 60A = 1776W (That was the AMP spike I saw in my 8S set up with a Neu 1515/2Y 1100Kv)
6S lipos 22.2V X 80A = 1776W
4S lipos 14.8V X 120A = 1776W
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You're getting all the right answers for all the wrong reasons. :)
The higher voltage is the reason for the lower amp draw, not the KV of the motor. If you're doing the same work, you're doing the same work. If the efficiencies of the motors are the same, then the heat level is going to be the same. If we assume all of those motors are equally efficient at 90%, then they'll radiate 177.6w of heat, regardless of current draw.
The only way to make the same power with less heat is to get a more efficient motor.
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