While changing a spoke, I noticed that the outer part of the splined bearing of my schlumpf hub broke into several pieces.
It’s an old schlumpf hub (M0134), which I bought in May 2016 from an excellent French unicyclist:
(There is a little sentimental side, this video was released in the first weeks when I started unicycling)
I noticed that there were problems with the bearings, and all 9 bearings were changed in June 2016.
Since 2018, I have occasionally heard strange noises coming from the hub, sometimes for several sessions in a row, and then suddenly no noise for months. A week ago I heard this kind of noise again, I stopped, looked at the hub, saw nothing and it passed.
On Monday, a spoke broke, and yesterday evening when I was replacing it I noticed that the outer part of the splined outer bearing was broken into pieces, some pieces were already gone, others were still in place.
I think this problem is not recent, but maybe I’m wrong… I sometimes have some difficulty shifting gears (with a delay of several pedal turns…), but I have trouble seeing how this could be related.
I was training to attemp for the hour record in a few weeks, I admit that it could cool me down a bit…
I easily realise that :
- external particles could get into the bearing and damage the balls
- the bearing grease leaks easily, which could accelerate the wear of the bearings and contaminate the brake disc and pads.
But I don’t know if this problem can generate other consequences (high speed crashes…).
If there are any experts who have an informed opinion on the subject, I’d be interested. In any case, I will have to contact Florian Schlumpf again at some point, it’s been too long since I’ve had any problems.