how does bike computer work

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The way a cycle computer works is simple.Each time a magnet on the wheel passes a sensor on the fork a signal is generated. The bike computer measures the time between those signals and works out how fast you鈥檙e going, based on the wheel dimension you gave it on initial set up.

People also ask


  • What can a bike computer do for You?

  • And cyclists love numbers 鈥?weights, wheel sizes, frame geometries 鈥?so a cycle computer can add a useful extra dimension to your riding. Here’s a look at what a bike computer can do for you.

  • How does a GPS bike computer work?

  • As your position changes over time, your GPS bike computer can calculate your speed and record your routes. Although we talk about GPS, devices from brands like Garmin and Lezyne take signals from GLONASS satellites too, GLONASS being the Russian equivalent.

  • How does a cycle computer work?

  • The latest generation of cycle computers come with apps that wirelessly connect the head unit and your phone. That means as well as its built-in functions, the computer can access your phone’s sensors to provide functions such as using Global Position System (GPS, the basis of satellite navigation) to record where you’ve been.

  • How do bike speed sensors work?

  • Magnetic sensors are generally used for cadence and speed. A magnet is mounted to the spoke of a wheel or the crankarm. A sensor is then mounted on the frame or front fork of the bike and reads every time the magnet passes the sensor. Because the magnetic field is strong, these sensors are immune to dirt, dust, water or mud.

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