Cadence sensor won't stick

corblimey

I got a cadence sensor with my Garmin, and after my cycle on Saturday when I couldn't get it to work, I noticed that the magnet you attach to the pedal arm was dislodged and hanging down, only the ziptie I'd attach stopping it from landing somewhere between here and Cork city. Evidently, the sticky back hadn't worked very well, but I'm loathe to try anything more permanent, like super glue or something.

I bought some more zipties, and was considering just tying a few more on, but I can't be the only one with a non-functioning magnet sticky bit? Is it a failure on the part of this component, and I'd be better off bringing it back to the shop?

The tax man

Try these. I have them, they work grand and are unseen. Best of all they WILL NOT fall off, in fact they're tricky to remove.

I've never had a problem with the original magnets coming loose. You could also just buy some strong double sided pads in a hardware and cut it to size and try again.

clog

+1 for Taxmans suggestion above works perfectly.

doozerie

I'd try the magnet on pedal axle option too, but if it doesn't work for you or if you'd just prefer to stick with your current magnet then double-sided carpet tape (might have another name too) is another alternative to sticky pads. Rolls of it should be readily available in hardware stores, it's relatively strong, and because it's thin and on comes in a lengthy roll it's very useful for a range of things.

bikermartin

i have fixed mine with the cabletie and then wrapped it in standard insulating tape. it would not lie flush with the crank any other way.its not what you may want on an expensive bike, but has stayed in place on mine for 6 months now even over the worst of the winter :rolleyes:

corblimey

So just to be clear, I don't need the magnet that came with the Garmin? Any old magnet in the right position will do the job, it's the sensor on the fork that does the actual work, right?

niceonetom

Any sufficiently strong magnet - I experimented with a button magnet from the back of a fridge ornament and it wasn't strong enough to give a reliable signal or hold itself to the axle.

Maplin sell neodymium magnets in a few sizes that do the job nicely.

seamus

The sticky bit is crap. Stick a small piece of rubber - cut a square out of an old tube - between the crank arm and the magnet and tighten up the zip tie. This will stop the magnet from moving on the crank arm.

2 Wheels Good

corblimey wrote: »

So just to be clear, I don't need the magnet that came with the Garmin? Any old magnet in the right position will do the job, it's the sensor on the fork that does the actual work, right?

Yeah, a Cateye cadence magnet or equivalent should also do the trick. Same for the wheel for anyone with oddly shaped spokes.