[Serum]

It's brushless, think different.. :p the energy that is needed to turn the shaft around takes more energy with a higher KV rated motor, than with a low kv motor. it takes more energy, because the magnet give the resistance to the magnetical field, because of this magnetical field moving faster with a higher KV number, the amount of energy is the same if you calculate is back. the torque stays about the same. it's the current and the rpm's that differ.