Bicycle Mechanics - loose wheel magnet

I'm trying to install a computer on my son's roadbike and the wheel magnet won't tighten snuggly on the spoke. The screw bottoms out and the magnet is still really loose. I'm planning to try wrapping the spoke with a little tape or maybe even using super glue. Do any of you have other ideas for solutions? This isn't a real expensive bike or wheel, but its a serviceable bike for his college home and I don't want to damage it.

Thanks,
Ray

Any magnet would work. Your LBS might have some old ones sitting in a used parts bin that would fit. Bring your wheel.

Longer screw.

Seems like on the magnet on mine, a part of it was reversible for either flat spokes or round spokes- read the instructions and make sure you're not missing something there.

You can make a simple shim out of sheet foam or cardboard.

Clean magnet and spoke with brake cleaner, slather with 2 par epoxy, assemble, you're done.

Stop by your local shop and they should have one laying around that will work fine or get a longer screw. I wouldn't glue it to your spoke personally. If you ever change computers, odds are the sensor for the new cpu will not be located in the same spot.

Stop by your local shop and they should have one laying around that will work fine or get a longer screw. I wouldn't glue it to your spoke personally. If you ever change computers, odds are the sensor for the new cpu will not be located in the same spot.

If he gets a new CPU, it will have a new magnet.

I use silicone sealant to glue the magnet in place. Holds it in place & comes off easily.