[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

Amps is what will cause most of the heat and the lower the amp plus the torque of a lower Kv motor will give you a cooler running set up. I can also run smaller capacity packs ranging from 2200mAh - 3700mAh 8-10S lipos. he other factors will be gearing, weight, drivign style and smoothness of drive train.