It is well-known that a certain contributor to this forum modofies EVT hub motors to provide 50 mph/80kph speeds. This involves increasing the free-spinning RPM's from about 750 RPM to about 1100-1200 RPM. He dees not seem to be willing to offer any technical information on this modification.
Can someone with some background in electric motor design provide a general idea how this is being accomplished? Does this involve new windings, commutation timing, or a combination of these?
Thanks in advance for the help.