Kv
A brushless motor's RPM per volt with no load.
A 3500Kv motor on a 2S (7.4V) pack spins ~25,900 rpm unloaded. Higher Kv = more top-end but more heat; lower Kv = more torque and cooler running.
A brushless motor's RPM per volt with no load.
A 3500Kv motor on a 2S (7.4V) pack spins ~25,900 rpm unloaded. Higher Kv = more top-end but more heat; lower Kv = more torque and cooler running.