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Old 07-15-2010, 03:55 AM
kyl 46&2 kyl 46&2 is offline
Motorized Bicycle Senior Member
Join Date: Apr 2010
Location: MN
Posts: 77
Default Re: Rear Sprocket on Disc Brake Wheel

i ran into the same problem with the sprocket not fitting over the disc break mount. to get around it the first time i tried to take a grinding bit and a dremmel to open up the center hole. that turned out to be time consuming and horribly inaccurate. eventually i found a local machinist and had him mill out the center to a proper diameter. this allowed me to use the stock sprocket mount. i did end up upgrading to andy's tophat adapter, witch if you can get it its awesome! you may have to do some adjusting to get a good chain line, but that can be done with washers and a bit of grinding the bolts down for good clearance. if you got the right tools its not hard to figure out.
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