The JR counter will fit on most bicycles with little modification. Remove the wheel from the bicycle and slip the counter over the axle on the LEFT side. Put the wheel back on the bicycle with the counter between the fork and the wheel. Tighten the wheel securing nut or lever.


Counter mounted on bicycle.




Wiggle the wheel back and forth just a little. If the large counter gear rubs against the fork the fit is not correct. This can sometimes be corrected by installing a washer between the outer side of the counter and the inside of the fork. Try this. If free rotation without rubbing cannot be obtained, the counter cannot be used on your bicycle.


If the tang does not sufficiently engage the spokes, an alternate installation is possible by installing the JR between the locking nut and bearing cone. See below. Otherwise, the wire can be used to drive the tang.


If there is interference between the small plastic gear and the spokes, install a washer between the inside of the counter and the adjusting nut on the wheel. If the forks interfere with the large gear, install a washer between the fork, and the JR.



Check for clearances!

Be careful on bicycles equipped with quick-release hubs. Ensure the axle still protrudes adequately and engages the forks. If a washer is required to achieve clearances, it may be possible to adjust the bearing cones / axle slightly (1-2mm) to allow the axle to protrude sufficiently to engage the drop-outs. Ideally, the axle should be centered between the face of the locknut on one side, and the washer on the other to allow the axle to protrude equally on both sides. If you are unfamiliar with adjusting the bearing cones or lack the wrenches required, please see a local bike shop for assistance.

If you are unable to fit the counter to the bicycle using washers, it may not be possible to use the counter on the bike.


Again – before attempting to rotate the wheel, check for interference. If you do not do this you may damage the counter. We will not be responsible for damage due to improper installation. There are 100 million bicycles in the USA and the JR will not fit all of them.


Below is a collection of photos of some possible options you might find helpful.






The JR, fits the majority of bikes with no modification. However, some bikes have front wheel geometry that makes installation difficult. In some cases with the 2008-2014 chassis, the drive tang (the little bent-over piece that is pushed by a spoke) got bent or broke off. This is highly unusual in the current model. When the counter is put on the bike, and the axle nut tightened, there must be some play, or shake, in the metal gear. The tang should be free to rotate between the spokes it contacts without rubbing on the hub flange. If there is any binding at all, the unit must not be used until the binding is eliminated. If this is not done, the tang may be bent or broken.


We supply replacement chassis to fix bent chassis.




Avoid overspeed


The manufacturer of the Veeder-Root counter used on the Jones counter recommends that rotation not exceed 500 rpm. In riding terms this amounts to about 17 mph or 25 km/hr. Many get away with riding faster, but forewarned is forearmed. Overspeed may cause damage to the working parts of the counter.





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