Hi!
I'm repairing an E-bike where a disk shape element is broken.
On the disk is mounted 6 magnets which are traveling in front of a sensor during the ride.
The disk is mounted on the shaft of the bicycle pedal shaft.
So, whenever the pedals are moving the shaft is rotating and the disk is rotating too with his magnets on it and they
running away in front of a sort of sensors.
Cos that 4mm thick and 75mm diameter plastic disk part is not accessible to buy, I decide to make it and put the magnets
in place as they are on the original disk.
Now, I did everything perfect as the original part and I have some trouble.
when I rotate the pedals, the controller did not respond correct to the rotating.
As long as the pedals are rotating the controller should activating the motor in the front wheel, but it stops and start and stops and start... etc... no continuous running as it was before.
The distance between the sensor and magnets are exact the same as with the oem part.
Everything is the same, except one thing maybe.
I didn't worried about the magnet polarity when I reassembled my new disk.
Probably I mixed up the polarity of the magnets on the disk and now maybe some magnets are showing his S but other N polarity to
the sensor.
Could this be a problem?
I think the polarity of the magnet is not a matter to detect the magnetic field, but I'm not sure.
What you think about this?
Thank you.