Yes, the streets of San Francisco. He doesn't have moped plates yet, but he's going to get them. He lives close enough to work to commute with it. Perhaps the cops that are tailing you are just interested in the bike and not out to bust you. A lot of cops ride bikes.
The controller could take 48v (60v peak) with a minor mod. It would be fairly easy to replace the entire controller with a Crystallyte 72v. You would need a dc-dc converter also.
With the controller tweaked to 60 amps, he reported the insulation on the phase wires was starting to melt after a long hillclimb.
We're going to try and find a larger rear sprocket to lower the gearing, then jack up the voltage. Same top speed, but better climbing. This should help the range quite a bit too. He replaced both brake calipers and it made a huge improvement in braking. You can lock the wheel with two fingers.
I have no idea where you could get a rotor and housing. The housing on the bike is part of the frame. I think you would have to make one.
Possibly a bigger Kollmorgen rotor might be the right size.
What's the inside diameter of the stator?