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Removing sensor magnets from rotor bolts

E.Marquez

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Location
Kempner, TX
First Name
Erik
If any of you have ever tried to remove a brake rotor after having installed an after market speedo that uses magnets for the hall effect sensor,,, you know the pain of trying to get those little round devils out of the fastener head.*

6mm socket head head cap screws are* typical of rotor fasteners, and the magnet OD is just under 6mm so they fit really close leaving no room for even a thin dental pick, or sewing needle to get in there and "pick" it out.**

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Stronger magnet to remove does not work either, nor does compressed air....

What does work???? The one thing that excels at gluing your fingers together but never seems to be near as "super" of a glue as the name implies
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ethyl-2-cyanoacrylate AKA Super Glue.
Clean the nice flat steel magnet, just a tiny drop of glue on a equally clean steel flat bit, say a small hex bit driver that was close at hand, the magnet even holds the two parts together for the 60 sec it takes the glue to cure.

And out it comes.

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Magnet comes right off with a pair of pliers, and the dried glue with just a wipe of a bit of*acetone on a rag.

I have almost zero luck with super glue, gluing things as the TV commercial advertise, but this time it actually worked.*
 

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Impressive. Like you, about the only thing I have ever seen it work on is fingers! :lol2:
 
We actually have medical grade super glue in the first aid box at work for glueing fingers back together
 
Welcome to the 21st century - get a GPS speedometer that require NO connection to your wheel or transmission to determine your speed AND direction.
 
Welcome to the 21st century - get a GPS speedometer that require NO connection to your wheel or transmission to determine your speed AND direction.

"Manfred 1985 Honda VF700 Sabre"
You first...

LOL

Many already have a hall effect driven speedo, or prefer the style and function of one over GPS units available...

Additionally I don't get to choose (well kind of) what kind of a speedo comes in on a bike Ive chosen to work on....
 
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