bicycle speedo magnet

I am about to fix a cycle speedo to Clare's V50.

Unlike all my bikes, hers has cast wheels, so I can't just clip the
magnet to the spokes.

A bit of a google shows a few ideas on mounting, but in case there are
more, what are people using?

Seems the usual is to use a rare earth magnet, and araldite it to the
disk mounting?

Zebee

 

Are you going to it, or is it coming to you?

Aralditing is over-kill......double sided tape and/or insulting tape
work quite adequately upto atleast 200 kph. ;-)

The magnet that comes with the trip computer will usually work just
fine. Typically, the magnet is covered in some black plastic, which,
with judicious carving can be made to suit the required contour.

Sometimes, if you are lucky, the standard style fittment works.
I took the old Cateye type magnet, which had been fitted between two
spokes on the Intruder's wheel, and it just clipped and screwed onto the
front disk rotor of the RZ like it was made for the job.

regards,
CrazyCam

 

The normal magnet that comes with it should be fine
http://www.burniemorgan.com/firestorm/sigma.html

 

Clare and the V50 are on walk/ride-about. May have started during your
absence. I think she going to clean up Zebee's place. Or frighten
Zebee into doing it before she gets there.

I had a mother thus I know these things.

Theo

 

If you can't use the original, the magnet from a cheap pickup tool works
well. Of course I used araldite.

Moike

 

Moike wrote in message ...

I used Silastic for the first one (which was for a cruise-control and was
mounted on the disc carrier).
I left it a weekend and it's lasted 30,000 or so.
I did the same for a second one which I left cure for an hour or so and
which I lost at 1hour and 5 mins when I hit 100kph.
Clem

 

If you cable-tie the sensor to a fork leg, put it toward the front rather
than the back of the fork. That way if it moves a bit and hets hit by the
magnet, it'll be pushed away. If it's on the back of the fork leg, it'll
get jammed between the disk and the fork. Not nice.

Moike

 

I took an old hard disc apart and used the magnet from the voice coils. 2 drops of superglue
combined with the magnetic field makes the magnet unmoveable.

Mike.S

 

dont mind Moike....he is old and rides a BMW

 

I don't mind...

And growing old, young Martin, is something to which you can only aspire.

I've managed to do it.

And, I might add, I've had a lot of fun doing it. And I intend to continue
to *enjoy* growing old for a considerable time yet.

See above.


Moike

 

Theo Bekkers wrote:

Good oh.

For a brief previous meeting, she didn't seem like that kind of mum....

Well, tickets could be sold for _that_ event!

Many years ago, I had one of them too, it was one of the reasons why I
came and hid in Sydney.

regards,
CrazyCam

 

them hard drive magnets are great, i used 4 of them on a 3.5 kg pole
climbing robot, to hold it on the pole.
we usta use magnets to give cruise controls a speed pulse, when there was no
other option (they work well but do fall off) and found that 10 mm or so
clearance was good.

Someone let Mike.S at NOSPAMmichaelNOSPAM@
loose on an internet connection and the result was:

 

} Aralditing is over-kill......double sided tape

I don't think so. Even with epoxy I've lost two magnets (over some
250.000km total, so not too bad still). Both times they were gone
after some spirited unpaved riding, where the magnets had been in
place for a couple of tens of thousand kilometers already.

} and/or insulting tape

I'd like a few rolls of that.

--
// Rik Steenwinkel '85 R80ST Skippy bike
// Enschede '91 R100GS/PD The Great Unwashed
// Netherlands ('76 Honda CB250G Bouwpakketje)
// "Far away is only far away '90 K75C Kommutabike
// if you don't go there" '81 MZ TS250/1+LSW Badkuip

 

} If you cable-tie the sensor to a fork leg, put it toward the front rather
} than the back of the fork.

ITYM "with the direction of rotation of the wheel". On my GS I have
the sensor below the axle, to the rear of the leg. Front/above the
brake caliper is in the way.

--
// Rik Steenwinkel '85 R80ST Skippy bike
// Enschede '91 R100GS/PD The Great Unwashed
// Netherlands ('76 Honda CB250G Bouwpakketje)
// "Far away is only far away '90 K75C Kommutabike
// if you don't go there" '81 MZ TS250/1+LSW Badkuip

 

In aus.motorcycles on Fri, 29 Aug 2003 15:32:17 +1000

She's not... although the microwave *is* looking whiter than normal.

She's expressed a desire to go up the Old Road Sunday morning, up for a
ride?

I do mean morning, I'd probably turn up at Chez Manson around 8am and
head up from there, with or without a Scotsman...

Meaning we'd be leaving Berowra Mobil no later than 9am.

Zebee
- suspecting there won't be many takers!

 

3M Commander adhesive strips!!

 

I used a rare earth magnet and sat in into the head of one of the disk
mounting bolts on Jenny's bike. That was early this year and its still there
and works well. No glue or epoxy

Mick
GS1000S

 

Superglue or araldite a magnet to the disc carrier then a bead of silicone to prevent water ingress affecting the bond.

Never moved in almost 3 years.

Usual surface prep for glueing, ie remove all grease from surface to be bonded.

Dont think I even used a rare earth magnet.


alx

 

"alx" wrote

There's so many about they're hardly rare any more.

Theo

 

I'll be in Mittagong having breakfast then...
There might even be a few TTT rallyists meeting us there.

Coldman Pat