replaced Elna Supermatic drive wheel.
I swapped drive wheels on an Elna Supermatic this weekend.It can be done using a punch. The retaining pin is a 2mm roll pin. I had to make my punch big enough to not get caught in the center of the pin, but small enough to go through the motor shaft. No part of this was easy. There is not quite enough room for anything you want to do, and getting the drive wheel to line up to the hole in the axle while rolling it around the axle and lifting it up and down was not fun. Not for a rookie. I also included a pic of the old drive wheel with all the rubber taken on. I suppose if someone was good with making rubber, they could make a new tire. Flat spots on the tire gives one the dreaded Elna growl.