how to Fasten on Cadence Magnet on Carbon Crank

[Splash]

What method do you use?

Splash

[thirdgenbird]

I put the magnet in the pedal spindle.

[Cicli]

What method do you use?

Splash

A small rare earth magnet stuck to the back of the pedal spindle.

[MattTuck]

I use a neodynium magnet that sticks to the pedal threads. Crank material doesn't matter, I don't think.

[Tony T]

I use one of these: https://www.kjmagnetics.com/proddetail.asp?prod=D82B-N52
Attached to the crank with this cut to size: http://www.amazon.com/Scotch-Products-Double-Sided-Double-sided-high-density/dp/B004E2RKL2/ref=sr_1_12?ie=UTF8&qid=1404485740&sr=8-12&keywords=3m+double+sided+foam+tape

[Splash]

Thanks guys.

Great responses!

i have the Look KEO Blade Carbon Ti pedals.

Are the pedal spindles Ti in the pedal set?

If so, what magnet sticks to Ti?

I have just found out the cadence sensor is a simple stick on affair. I just removed it from my other crankset, thing it was magnetic - but it is not.

This came as part of the Rox 9.1 kit i bought a couple of years ago - now trying to transfer it over to my new Oltre...

Should I simply buy a new magnet (if so, what special material is needed if at all)?

Otherwise, best method of sticking on this existing cadence sensor?

Does it matter I use another cadence sensor for the Rox 9.1 system? Is there something special, unique about the sensor that came with the kit that needs to co-exist with the cadence reader mounted on the frame?




SPlash

[Tony T]

Otherwise, best method of sticking on this existing cadence sensor?




This cut to size. You can get it at Staples, or Amazon.
http://www.amazon.com/Scotch-Products-Double-Sided-Double-sided-high-density/dp/B004E2RKL2/ref=sr_1_12?ie=UTF8&qid=1404485740&sr=8-12&keywords=3m+double+sided+foam+tape

[kramnnim]

You don't need a special magnet. A rare earth as mentioned already may work better, you don't need to have it as close to the sensor.

You can stick it on with double sided tape, or a blob of silicone caulk, etc, it won't stick to the ti spindle...

[Splash]

Tony T - Those scotch pads are marketed as "Permanent". How does this sit with you?

[Tony T]

These 3M stickers are used mainly for attaching to interior walls. They have temporary ones that won't damage the walls. For sticking to metal, when you remove it, there will be residue (glue) left on the crank that can be removed with WD40.
I've had this holding a magnet to the crank for about a year

[Lewis Moon]

I put the magnet in the pedal spindle.

One reply and you have your answer.

[Tony T]

Not if your spindle is Ti :)

[Z3c]

Use some clear silicone adhesive/caulk and a Super Magnet so you don't have to have precise/close alignment. Holds well and is easily removed with no marks. Silicone is cheap; Ace carrries Super Magnets in my area..

[evo111@comcast.net]

Magnets work great - no go on Ti spindles but the silicone trick works.

[Bruce K]

Boy am I behind the times. :rolleyes:

I use an actual cadence magnet that came with the sensor and a zip tie for insurance.

:crap:

BK

[wallymann]

What method do you use?

Splash

cheap neodymium thin disc magnet and double-sided foam tape. removable and totally unobtrusive.

http://image.made-in-china.com/4f1j00gBftJTvIhokK/Neodymium-Magnet-Disc-D9-5-1-D10-2-D15-7-.jpg

[shovelhd]

Rare earth magnet glued to the spindle with Amazing Goop.

[lhuerta]

low strength epoxy

[sworcester]

if you can find it, 3M VHB double sided tape. If you can't find it, PM me.

[Splash]

thanks guys.

splash

[DerekB]

I have Ti spindles on Campagnolo Super Record cranks. I use a rare earth magnet that is just the right diameter to fit in the recess on the pedal thread insert which is ferrous so the magnet sticks. No tape Goo or anything else.

[Splash]

so, if i walk into the LBS and ask for a rare earth magnet, will they know the difference between that and a normal magnet?

Splash

[Dead Man]

I'm gonna sound like a barbarian.... I sanded a little spot and superglued a magnet I pilfered off the fridge.

[Louis]

so, if i walk into the LBS and ask for a rare earth magnet, they will know the difference between that and a normal magnet?


If you can remove it from a flat piece of iron or steel with your fingers it's a normal magnet. If you can't it's a rare earth magnet.

[11.4]

so, if i walk into the LBS and ask for a rare earth magnet, they will know the difference between that and a normal magnet?

Splash

They won't know or won't care. Go to www.rareearthmagnets.com or a few other sources you find by googling "rare earth magnets" and pick your size. Get a vial of a dozen and you're set for life. For regular use get about a 3/4" disc that's less than 1/8" deep. The long thin rectangular plates are really good to insert inside the valve access of disc wheels for a completely hidden magnet.

And I like to use aquarium cement, which is completely clear and pretty strong, but actually peels off the epoxy of a carbon crank without doing any damage.

By the way, don't get too thick or too large a magnet. Too much magnet can cause the sensors to miss beats and you don't get an accurate cadence reading. It's always been a hassle with SRMs.

[11.4]

Boy am I behind the times. :rolleyes:

I use an actual cadence magnet that came with the sensor and a zip tie for insurance.

:crap:

BK


Probably doesn't shave his legs either.

How do people like this get in the door?

[Bruce K]

Been here since the dawn of time.;)

BK

[oldpotatoe]

Magnets work great - no go on Ti spindles but the silicone trick works.

Be careful putting a magnet into the end of the pedal spindle, of course for those pedals w/o flats..just a 6 or 8mm allen to remove..or you may not get them off..steel spindle, rare earth magnet, in the hole..it will NOT come out.

[Tony T]

To remove, just use another (stronger) magnet.

[oldpotatoe]

To remove, just use another (stronger) magnet.

For first gen Campagnolo Chorus pedals..the magnet that came with ERGOBrain(glad that's gone)..strong magnet..had another big magnet, still couldn't get the wee thing out.

[thirdgenbird]

I never had a problem with my ergobrain. I was just a lot of wires to tape up. I'm not currently using it, but I think I've got a few harnesses for it still.

[oldpotatoe]

I never had a problem with my ergobrain. I was just a lot of wires to tape up. I'm not currently using it, but I think I've got a few harnesses for it still.

If it worked, it was good..the little thumb buttons were wonky, with the wee spring and the yellow plastic thingys that went around the lever to handlebar clamps..BUT like EPS, easy to program..

[thirdgenbird]

Come to think of it, I did have one thumb button that would occasionally stick.

[grawk]

I use a rare earth magnet on the pedal with a hole in it big enough for the Allen wrench. works great.

[Team Murray]

You can get rare earth magnets from Michael's, the hobby and crafts store. They cost about $3.99 for a 4-pack. When you're there, get a pack of 3M Command strips. They are silicone rubber double stick tape. Just make sure you leave a tab of it sticking out so you can remove it later. It comes apart by pulling on the tab to shear the material off the adhering surface.

[Jason E]

Bontrager has a nice one built into a pretty robust band. $5 or less, slips on the crank arm, held up all cross season. Now I use them on all the bikes with cadence sensors.


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[11.4]

Seriously, I once saw a cross bike in the Netherlands set up with cadence. Obviously you don't want a cadence sensor down near the bottom bracket because it'll collect muck. This competitor, a top amateur, had a sensor on the top of his top tube and the magnet was inside his knee warmers. Every time his knee rose, he activated the sensor. I can see issues with it, but it's an interesting case of free thinking.

[Jason E]

11.4

I ride it on dirt roads in a local park when not cross season. Also only 2-4 of our races are muddy. NC. Agree it's not needed. Not when I can use my Stages. Just kidding.


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