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re: where to get those rare earth cadence magnets?(6 posts)

re: where to get those rare earth cadence magnets?ThirtyFive
Feb 8, 2003 8:22 PM
i searched the archives, but couldn't find the thread. there used to be a place on-line and a part #... thanks in advance
I think this is what you're looking forB2
Feb 10, 2003 12:06 AM

thats the one thanks!ThirtyFive
Feb 10, 2003 7:37 AM
Why use a rare earth magnet?davet
Feb 10, 2003 2:32 PM
I'm assuming it's for your computer. Am I wrong?
So you won't loose it.B2
Feb 10, 2003 4:48 PM
Yes - a good option for your cadence sensor. If you buy a magnet with a slightly lesser diameter than the threaded hole in your crank for your pedals, it will sit in there nicley, just protruding out the back side enough for the sensor to pick up. Why rare earth? Because it's the only one I could find that met my criteria for shape and diameter. I figured a little stronger magnet wouldn't hurt either.

In the case of the ergo brain, the magnet they give you is made specifically for Campy pedals and actually fits in the pedal spindle (and protrudes out the back side of the crank). I tried rigging the magnet with a set Speedplays and it worked for a few weeks until one day it wasn't there any more. 2,000 miles later my replacement "rare earth" magnet is still there.

Other cadence sensors require you "strap" it around the crank arm. It's just much nicer to have it hidden on the back side of your crank.

So you won't loose it.mainframe
Feb 11, 2003 1:15 PM
What size rare earth mag did you get? I have a DA crank, any guess which size works? How do you fix it in there?