That's it! The speed sensor!
Ebay magene OK?
I'd be happy to take them off your hands if you really don't need it. (thank you for the offer!)
Do they no longer need a magnet on the spokes?!
Never tried a Magene sensor so I couldn't say. I'll see if I can dig out a GSC-10. Unlike the newer models, the GSC-10 does require magnets - one in the spokes for speed, one on the cranks for cadence.
@Brommers started
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That's it! The speed sensor!
Ebay magene OK?
I'd be happy to take them off your hands if you really don't need it. (thank you for the offer!)
Do they no longer need a magnet on the spokes?!