Do you know Doug and Cliffy?
They are shipping their bikes over which have all the goodies.
They are racing the China girl classes, we have Beginner, Novice and Expert
and of course they get to race in GoPeds vs Bikes at the end of the day.
The nema 34 (16 mm) box is $150.00, the others would be too small.
Yeah those are for steppers. They won't work. I've built stuff with the nema23 motors and can tell you right now they are relatively low speed. Also running only a single stage will get you a reverse output, as those things probably drive the sun gear.