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-   -   spoke magnet question (http://www.bikeforums.net/electronics-lighting-gadgets/740142-spoke-magnet-question.html)

alkt03 06-01-11 04:33 PM

spoke magnet question
 
I just have a quick question...I have a Cat Eye Velo 5 and a recently lost my spoke magnet when I moved. I have another magnet from a different computer, but it doesn't seem to work...is there something wrong with the magnet or do I need to buy a Cat Eye brand spoke magnet? Thanks in advanced!

Drew Eckhardt 06-01-11 04:36 PM

Quote:

Originally Posted by alkt03 (Post 12725753)
I just have a quick question...I have a Cat Eye Velo 5 and a recently lost my spoke magnet when I moved. I have another magnet from a different computer, but it doesn't seem to work...is there something wrong with the magnet or do I need to buy a Cat Eye brand spoke magnet? Thanks in advanced!

Magnet power and therefore detection distance vary. Assuming your computer hasn't broken, your sensor is not close enough to the new magnet to work. Adjust the magnet/sensor closer together, or buy a new magnet which may or may not be Cat Eye brand.

ItsJustMe 06-01-11 06:09 PM

Agreed, I've used magnets across brands. The only difference is strength, there's no magic Cateye magnetism. Once when all I had to use was a cheap generic WalMart magnet, I couldn't get it close enough to trigger, so I epoxied on a neodynium disc magnet, which made it probably twice as powerful as the original, and it worked fine for a year or so until I bought a new base, which also came with a new magnet.

Sometimes the magnet has to be really close. Move it until it's actually touching then back it off a little. It may also help to put the sensor and magnet as close to the hub as possible; this makes the magnet move past the sensor much more slowly and increases the odds of consistent performance. It also unbalances the wheel less.

CaptainCool 06-02-11 11:23 AM

Cateye magnets are more powerful than other bike computer magnets I've used. So the sensor may be less sensitive. You should still be able to move the sensor close to the other magnet to get it to work.

himespau 06-02-11 11:54 AM

I like the idea of epoxy-ing on a second magnet. I sometimes have recognition problems from both my speed and cadence sensors. Are magnets additive? Could I just epoxy on any bit of magnetizable metal if the only goal is to get the two things closer?


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