What's up yall..
Just got the 20" magic pie wheel in... as recommended by Luke and a few others in the pike's peak race thread.
Holy crap, that rim is no joke. Put a 2.3" tire on it and the tire looks narrow on this rim. Very happy about this - Golden Motor hit the nail on the head when they designed this rim!!!
Diameter is about 11in, versus the MXUS / 9C diameter is about 9.5in.
Width is roughly the same.
This thing is and effing monster and takes off like a scalded cat even at 57v( 15S ) / 33a on the stock phase wires with a saggy 5AH of 20C lipo. Almost threw me and a local friend ( Tom Tom on ES ) off the bike when we would hit the throttle too sharply.
This is faster to accelerate on 1800w than my MXUS motor on 4000w.
It's as about as fast to accelerate as my MAC on 4000w, which was in a word, kind of terrifying.
However, she only goes about 20-25mph on 57v nominal, so i think 72v is going to be the minimum required.
More concrete data later on.. but so far... this motor is looking real good.