![]() ![]() ![]() Front-wheel reading computers should be more reliable, because when they are properly installed there are no loose loops of wire. The usual problems occur around the headset, where the wire can be pulled too hard if the handlebar is turned farther than usual. Wiring ProblemsĮlectrical wiring on bicycles is often subjected to serious abuse, and it is very common to have breaks in the wiring, particularly if the wire is not properly routed and secured. A misaligned magnet can also result in odd or doubled readings - see the article on that topic. These are easy to align, but they also may rotate around a spoke, so the sensor does not respond. This trick is particularly useful when you have more than one set of wheels with different spoke patterns so you can't duplicate the magnet placement. I have sometimes used small button magnets from Radio Shack secured to the spokes with transparent tape. The magnet should preferably be mounted close to the hub, so it travels past the sensor at a low speed, giving the sensor more time to respond. Sometimes, substitution of a more powerful magnet can make the difference in getting a computer to work. The more powerful the magnet, the less fussy its alignment with the sensor. Some magnets are more powerful than others. Also try sliding the sensor or magnet, one or the other, closer to the hub, or farther away. The sensor will not respond if too far from the magnet. Magnets and Magnet Alignment report this adīy and large, wheel magnets used in cyclecomputers are very ordinary, and may be interchanged from one brand to another. Some other units have a special procedure to "re-boot" the processor, usually by pushing all of the buttons at once. Genuine Cateye batteries, which are no longer available, came with a special little piece of thin plastic that can be inserted between the two batteries and then yanked out to establish contact cleanly. Many Cateye Solars have been discarded as defective, when they only need to have the batteries re-installed correctly. This is a particularly common problem with the Cateye Solar, which has very tight spring contacts and uses two small batteries that are a bit hard to install. The unit may show all 8's, or random fragments of characters, or may come up blank. This can cause "garbage" readings to appear. ![]() If the battery makes contact on a "bouncy" way, the irregularities of contact as the battery is pushed in can send confusing messages to the circuit. Ideally, the battery should make instantaneous, solid contact with its terminals, but in some cases, this is not so easy to do. Some units are a bit fussy about how cleanly power is restored. If somebody wants to scan a manual I’ll be glad to post it up or link to it.When the battery is replaced, power is restored to the computer. I’m seeing more requests for manuals from inexpensive, off-brand computers purchased from mass retailers. They’re listed approximately in order of popularity. If you want a new cycle computer and want to support Cyclelicious at the same time, I have about 30 pages worth of bike computers listed in the Cyclelicious Amazon Affiliate shop. My top secret tip: I don’t change the time in the fall, so when it comes time to Spring Forward I’m back to the correct time on my bike computers. It doesn’t appear manuals for older models are archived anywhere. For Serfas bike computer manuals, select your model from the bike computers product page and download the manual for the model.Schwinn 12 function bicycle computer manual.Bell Sports wireless speedometer manual.(not actually necessary since they’ll update automagically) Performance bike computer manuals for Ascent, Axiom and other models.Here are the ones I’ve found, but there are many more bike computers today than were available in 2005 please feel free to list any I’ve missed in the comments. Several bike computer manuals are available online as PDF files. If you did “fall back” for the end of Daylight Savings Time, your bicycle computer is now an hour fast and you probably have no idea how to reset the time on your bike computer. I added links for Topeak, Polar, Blackburn, Serfas and VDO and included a comment about computers purchased from mass-merchant retailers. Bicycle computer instruction manuals refreshed March 8, 2013.
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