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Reply to "Disc brakes"

Some Electric assist bikes use a 15mm or larger "Through bolt" axle. Often they also utilize a large flange hub.

A standard Jones counter will work for these applications BUT only after the counter is modified. Modification requires enlarging the center hole (usually to 17+mm) and removing and replacing the drive tang on the large gear. Enlarging the center causes the chassis to come apart. Reassembly is accomplished by use of a 2 part adhesive. The tang is replaced by welding a piece of a bike spoke long enough to clear the front hub.

This works well, but it does require some labor and is a special order item.

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