• I'd like to mount a speed sensor to my P3C. I have one of those hub mounted Garmin things, which calculates speed using an accelerometer I believe. The problem is fitting this to a rear disc (as fitting to the front wheel would be a bad idea).

    Other than butchering it up to somehow fit to the disc's hub, or to fit inside the valve hole (would the sensor work from that position?), what options do I have?

    What's the smallest/most aero Ant+(and BT?) speed sensor I can buy?

  • Most people glue tiny neodymium magnets to their discs and use whatever sensor they use.

    I'll probably need to do the same thing soon so would be interesting to see what you find.

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