- Local time
- 5:05 PM
- Jul 21, 2019
- San Diego area, east county
Hey thanks for all the replies. So I grabbed some calipers and measured the rear hub. I don't know exactly how to use these calipers but if I'm reading it right the hub is 1 and 1/10th U.S. inches. (living in united states btw to answer your Q) The real problem arises from the fact that going up to the spokes is a sharp inverted cone slope on the hub. (if that makes any sense). So the diameter climbs up to around 2 inches by the time it gets to the edge of the hub. So to get one of those adapters to fit I've realized I'd have to cut a reverse cone into the aluminum of the adapter. Sorry if that's a bit confusing.
Are there any place's I could get a rear wheel that has the standard one inch hub size? Before buying a new wheel or anything I'm going to try RB55's and Puck's suggestion of trying the original mountings again before I buy anything new. Might have to buy some better nuts and bolts but will definitely tighten to 12 ft-lbs. I might also try a larger, tougher chain as the one that came with it has a very tight tolerance with the sprocket.
Thanks all for the advice so far; I really didn't want to give up on this project as it was so much fun for just that little bit of riding. I will be selling that cnc sprocket on Ebay If I can't find a good rear wheel that works. But either way I have some renewed hope now about my bike project.
Not an expert by any means- but having pondered through rear sprocket questions- I believe the rear hub wants to be a ‘perfect’ cylinder. The reverse cone is a serious problem. So if the hub clamp paperweight is forced towards the center of the hub, sprocket alignment might be to far toward the center of the hub- perhaps a couple washers could move the sprocket outward?
Either way- you are close- don’t throw the project out the window.