The odometer is an electronic device mounted on the bicycle, which allows cyclists to monitor real-time mileage, average speed and the instant.
The operation of the bicycle speedometer is pretty simple. The odometer is composed of a magnet, a sensor and from the small computer (usually of square shape and dimensions similar or slightly superior to those of a digital wristwatch, according to transporthint.com) kits on whose screen it is possible to read all data of case. The magnet is fixed to a spoke of the front wheel, while the sensor is applied to one of the two front forks, at a very reduced distance from the point where it passes the magnet when the wheel rotates.
At every turn of the wheel, the sensor detects the passage of the magnet and sends the information to the mini computer on the handlebars, which translates all in mileage and missing the finish line, and, by linking these data with the elapsed time, speed reached and travel times. A little note is due about the method employed by the various kits to transmit information from the sensor to the mini computer. For there are models that use a simple cable connection: a simple cable has the task to bring the data to the “brain” of the kit, and this type of solution does not clearly presents problems whatsoever.
The other type of solution adopted, that of a radio wave transmitter which transfers data without a cable, it may seem more practical, but it hides a minor inconvenience. Because of the ease with which the devices operating at radio waves generate small interference, it is possible to encounter problems of this type in the case where two bikes with similar devices be located to travel at a reduced distance from each other. In other words, pedaling in the company this kind of odometer (provided of course that there are also those who joined it mounts on your bike one like it) may give some boredom.