I use a ½" diameter x ⅛" Neodymium magnet attached to the end of the pedal spindle, it is then effectively semi-recessed in to the back of the crank and has enough magnetic flux to trigger the cadence pick up from a fair distance away.
@gbj_tester started
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I use a ½" diameter x ⅛" Neodymium magnet attached to the end of the pedal spindle, it is then effectively semi-recessed in to the back of the crank and has enough magnetic flux to trigger the cadence pick up from a fair distance away.