Bike computer accuracy

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  • Bike computer accuracy
  • ossify
    Member

    I’ve seen a few comments here and there about how GPS units are so much better than the type that use a magnet on the front wheel.

    Seeing the following in a recent STW article reminded me of this:

    [… GPS blah blah …] is surely better than the tickover unit on your fork leg and that little spiky thing on a spoke that knocked it round once a revolution to record your mileage. Kind of.

    Is this actually true though? It seems to me that the magnet version is accurate to within a few centimeters, or at least a few bike lengths over the whole ride allowing for jumps and wheel circumference etc, whereas there’s a whole load of issues with GPS timings and accuracy (see Strava)

    For speed and distance that is, obviously GPS offers more options overall.

    mrblobby
    Member

    Wheel speed sensor is most accurate… if properly calibrated.

    Premier Icon jam bo
    Subscriber

    my GPS has a wheel speed sensor.

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