Topic starter
How is your magnet secured?
I'm looking to change my wheels which are centre lock hubs and my rotor is a shimano one with the magnet built in.
I've looked at the magnets that attach vua the bolt holes but it's hitting my chain stay.
Any help appreciated
Posted : 29/12/2022 3:26 pm
You can bodge a Bosch brake mounted magnet to work with the Shimano sensor or I noticed these the other day as well
https://jagwire.com/products/brake-rotors/pro-lr2-e-disc-brake-rotors-with-magnet
Posted : 29/12/2022 3:43 pm
Orbea bolt on magnet
Part number: X2400000
Posted : 29/12/2022 3:58 pm
Topic starter
I've tried the orbea one (bosch magnet) but it fouls the frame.
Can't seem to find the jagwire one in 203mm
Posted : 29/12/2022 4:09 pm
No issues with that Orbea one on my Rise with a RT86 Shimano 203mm rear rotor and the EP8 motor
Posted : 29/12/2022 4:26 pm
Have you tried a Bosch slimline magnet
https://www.ebay.co.uk/itm/143922372162?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338624526&toolid=20006&customid=dfbe99d0e940aa5e4d4b5c425ea79cc9 Other suppliers are available.
Ps - you can file them down and bend them with hammer/pliers, I had to with mine
Posted : 29/12/2022 5:20 pm
I am running Magura brakes & rotors on my Rise the MDR-P rotors the magnet sits in the hole on the rotor
Posted : 30/12/2022 12:02 am
I got creative with a spare rotor and epoxy glue (Rise H15)...
Posted : 30/12/2022 3:34 pm
I'm bosch but just changed to 6 bolt on my orbea and used a magnet from a Levo.
Works spot on.
Posted : 30/12/2022 3:47 pm
Topic starter
Some great ideas, thanks guys.
Loving the epoxy bodge.....might give that a go.
Posted : 30/12/2022 10:38 pm
Not got a pic, but my mate epoxied his OEM centrelock magnet onto his 6 bolt upgraded wheel/rotor setup, a fair bit neater than that one above. Depends how bothered you are about it, but as long as there's a magnet there to send a signal, it doesn't really matter how it happens...
The 6 bolt fitment magnets aren't exactly expensive though...
Posted : 30/12/2022 11:22 pm
Loving the epoxy bodge
On bikes generally upwards of 5k. Having to bodge something like that is silly.
Posted : 31/12/2022 12:33 am
zerocool reacted
Trying to get an Orbea magnet for my Rise (Shimano motor). Their spares site says it's out of stock with no delivery date, but I've found a Bosch one on Ebay that looks very similar to the one on my Rise wheel now.
Did you order the Orbea par number above and get supplied with a Bosch branded magnet (the one on there now doesn't say Bosch on it, the https://www.ebay.co.uk/itm/165584216406?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=fdEMHFxSSta&sssrc=2047675&ssuid=fz0qwEikRN2&widget_ver=artemis&media=COP Y">one on eBay does )
It seems there are pretty tight tolerances for magnet/sensor and it only needs to read once per revolution so theres no need for one bike brands magnet to be compatible with another. I see that Hope, sensibly, gives the specs for their magnet, but of course bike manufacturers don't make these dimensions easy to find (and they're not easy dims to measure accurately)
R32 sensor designed for bikes with a magnet 32mm from axle centre point
Sensor is 3.5mm thick and requires 4.5mm clearance.
Available in Hope's standard 6 colours.
Posted : 03/07/2023 2:16 pm
The Bosch magnet on eBay works with the Rise, 203 rotors front and rear with no issues
Posted : 03/07/2023 2:55 pm
Hope now do a really cute bolt-on magnet too.
Posted : 03/07/2023 3:04 pm
As said earlier the Bosch one for a few£ off eBay On a rise and I just bent the magnet back (towards hub) to avoid fouling frame. All good.
Posted : 03/07/2023 7:09 pm
