I picked up a used wheelset recently, and the rear Centerlock rotor is held on with a lock ring like I have never seen before. Not a typical lock ring tool to remove…has anybody seen this before?
by parkwalter
I picked up a used wheelset recently, and the rear Centerlock rotor is held on with a lock ring like I have never seen before. Not a typical lock ring tool to remove…has anybody seen this before?
by parkwalter
2 Comments
I would remove the axle end cap and then check the lockring interface.
That’s a speed sensor magnet for an e-bike integrated into a lockring or which fits on top of a lockring. Is that a chris king hub? I don’t think CK hubs work with internally splined lockrings, and I haven’t seen a magnet lockring that has even partial external splines
Hard to tell from your picture if there is a tool fitting hiding on the ID of the lockring, or it it’s a type that presses into the tool fitting of a lockring, but the markings indicate it’s a lockring with integrated magnet.
Based on the witness marks, it looks like it may have been installed/removed with a screwdriver and hammer in the past… Or perhaps that’s how you tried to remove it?
https://www.ibkbike.com/-s226800004/p
Sure looks like the same font as the specialized part, but without the internal splines for a rotor/lockring tool. I wonder if someone removed the tool splines to fit the hub preload adjuster? In that case, maybe remove with a screwdriver and hammer and replace with an externally spined lockring.
If you’re putting this wheel on an ebike, there are some rotors which have integrated magnets, or which can have a magnet added, but the position of the magnet needs to line up with the speed sensor.