Review on Optimized Garmin Speed Cadence Sensor Replacement Parts for Enhanced Performance by Jack Robi

I've already lost several cadence sensors due to bad Garmin design. However, there is relief. The sensor is nothing more than a strong magnet surrounded by a plastic shell. Instead of spending another ten bucks, this time I took a rare earth magnet and just attached it to the pedal shaft (which is made of steel) and lined it up with the main reader. Voila, it worked just as well as a Garmin sensor! If I lose it again, I'll just put another magnet in for pennies. I hope this saves someone $10.