Re: Sprocket won't fit on Schwinn Cruiser???
If I were you...and I was, I would remove the arm and the dust cover to see if it fits over the hub. I see people recommending it, but I think enlarging the hub is the last resort because if you are just a little off, the sprocket will not center. Usually, the dust over rim will need to be ground down. I have done 2 coaster brake hubs this way- no enlarging of the hole necessary. I'm not saying it will never be needed, just that you should try this first.