Recently brought home a 1978 Cimatti City. Bike as a summer project/commuter and found the sprocket was cracked and held together with what looks like to be JB weld.
I shouldn’t be surprised as one of the rear frame rails is bubblegum tacked together as well.
My question is does anyone have any ideas to get this off without pulling the motor and replacing the whole output shaft assembly?
Also attached photo of rear sprocket to get opinions on if I should swap that out while I’m replacing tires or whether it’s still salvageable.