Originally Posted by Skylar
... this thread is about designing, building and winding motors. ...
It's an interesting good discussion, not a messy one, don't worry. But this is a FAQ, intended for tips and tricks only. I try to keep it lean and mean and will remove the discussion at some later time.
Power losses are determined by current and rpm, not by power sec.
Copper losses = IČR
Iron losses = hysteris losses + eddy current losses.
Hysteris losses go up linearly with rpm, eddy current losses go up squared with rpm