coasterbrakejunkie1969
Riding a '38 Autocycle Deluxe
I recently serviced a ND model D and switched to a 1/2 inch pitch sprocket. When the hub was assembled there was a dragging noise and when I compared the driver I used to the one that came from the hub there was a difference in the design. There seems to be a different milling on the 1 inch driver. I compared it to other drivers I have and only the one would work on hub I had. You can see in the pics the driver to the left is the one that works the others do not. If you look at the driver below the bearing race you will see another step in the driver above the dust cap where as the rest have a flat. It is this flat area that is contacting the hub edge. I'm confused (easily done) perhaps I missing something. I thought it was maybe 1/2 vs. 1 inch pitch but the other 1 inch I show also have the flat spot. I may not be explaining it to well so bear with me. I realize I could install the 1/2 on the other driver to solve problem and that is another task I. have never done but I would like to figure out what exactly the problem is. Thanks for any help