Motors, RPM, and Efficiency

[Serum]

A high revving motor will suffer more lost than a low revving motor, just because at every pulse, the setup suffers more losses. But there also is a dead point too.. (on too low RPM) So to get in an ideal range, just use some sense..

I personally prefer a low kv big motor with a taller gearing.

A segmented rotor normally has got a higher efficiency as well. (on both WOT and at partial load.)

It depends on the setup (size of motor/voltage it's running on/gearing to determine the setups sweetspot. Use a tempgun, a few pinions and perhaps a few more cells to start the experiment..