If you follow the owner's manual closely, installing a bicycle computer is a relatively trouble-free process. But one part of the procedure that tends to give people fits involves setting up the sensor system that transmits ride information to the actual computer. This roadblock usually impacts users of wireless computers, such as the CatEye Micro Wireless. Generally, all wireless models use a similar sensor set-up process to the Micro Wireless. Note that the parts needed for this installation come with your CatEye wireless computer.
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Things you need
- Speed sensor
- Sensor rubber pad
- Large nylon zip ties
Attach the magnet to the spoke on the front wheel of your bicycle. The magnet comes in two parts: the magnet itself, which has a threaded screw sticking out from it, and an end cap with a groove for spoke placement that you screw onto the magnet to form a secure connection. Once placed on a spoke, about 3 to 5 inches from the wheel's rim, screw the magnet into the end cap, but do not tighten all the way.
Peel the tape off of the back of the speed sensor. Attach the sensor rubber pad to the back of the sensor. This pad helps secure the sensor to your bicycle's fork while preventing damage to the fork.
Place the sensor on the fork. The back of the sensor, which is now the rubber pad, takes the shape of a fork arm. Slide the large nylon zip ties through the openings in the sensor so they wrap around the fork arm. Do not tighten the zip ties all the way.
Line up the small target area, labelled the "Sensor Zone," on the speed sensor with the magnet. Every time the wheel revolves, the magnet and sensor zone should pass facing each other, with no more than 5 millimetres between the two. This allows the sensor to read the wheel's revolution and transmit data to your computer.
Tighten the magnet screw and the zip ties once you have achieved the proper positioning of both the magnet and the speed sensor. You will know the proper position has been attained when you hear a clicking noise each time the magnet and sensor pass one another. Your computer will also transmit accurate data when these two parts are communicating properly with one another.
Tips and warnings
- Test the accuracy of your computer by driving a short route in a car. Ride the exact same route on your bicycle. See if the distance travelled using each mode matches up.
- CatEye sells replacement parts separately through its website. Some bike shops stock these items as well.
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