I was reading a web site about Electric car motor convertions (which i'd like to do one day) & on this site they said that Dc motors were nowhere near as efficient as AC as the torque was greater all the way up the revs , the controller they call an inverter & they charge the battery etc. I had a 500 w not geared hub motor & am sure it was AC as the electric wire to motor were single copper & small for 500w.It was the one that was no good for the hills to which i then went to cyclone.
Which is DC ----seems they have different conclusions to me I wonder what the TESLA motor is.--does any one know?