Re: what did you do to your motorized bicycle today?
On my 24" wheel with the 32T sprocket, I'm finding it just needs a bit of clutch work on take-off, but it's a nice 4200rpm at 35kmh.
My perfect setup I reckon would be a 34T. The only reason I haven't done that is my crank seems out of balance, which starts to matter at speeds over 38kmh, or 4300revs.
It's the speed I want out of the bike so it's ok for now. Maybe later when I have time I'll play with it.