http://www.ebay.ca/itm/80cc-Motorized-BIKE-GAS-ENGINE-parts-disc-brake-w-mount-DB-2-/160715464771?pt=Cycling_Parts_Accessories&hash=item256b636043
Does this thing screw onto the cassette threads on the right side of the hub?
If so, where does the rear sprocket fit on? Or do both fit to be able to share the same threads?
Does this thing screw onto the cassette threads on the right side of the hub?
If so, where does the rear sprocket fit on? Or do both fit to be able to share the same threads?