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Old 05-12-15, 05:30 AM   #1
fastbike
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Computer for small wheels

I'm looking at buying a cateye wireless cadence computer with the combined cadence and speed sensor (ISC10). However on my small wheeled bike (406mm/20") the correct place to mount for cadence means the speed sensor is just forward of the wheel. Or if I mount the speed sensor by the spokes it is too far back from the crank for the cadence sensor.

How can I get this to fit ?
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Old 05-12-15, 02:31 PM   #2
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Hire shop help.
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Old 05-12-15, 06:08 PM   #3
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Originally Posted by fietsbob View Post
Hire shop help.
I’m willing to wager that wasn’t the response he was looking for.
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Old 05-12-15, 06:45 PM   #4
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Hire shop help.
Que ?
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Old 05-13-15, 08:02 AM   #5
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Diagnosis in the dark 3000 miles away aint workin'. you aint showing the Issue , too much assumption.
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Old 05-13-15, 08:17 AM   #6
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Sounds like the crank arm and wheel spokes don't overlap due to the small wheel size. If so, then you have two choices:

1: Change the laws of physics such that the magnetic field of one of the magnets is displaced sufficiently from its physical location to allow it to trigger the sensor.
2: Go with separately mounted cadence and speed sensors instead of a combination speed/cadence sensor.

I suspect option 2 will be more easily accomplished.
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Old 05-14-15, 08:07 AM   #7
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One option that some have used is to modify a combo sensor. Most have arms for the wheel sensor that can be removed and the two fine wires extended using some basic electrical/soldering skills.
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