Narhay

I have a sansin gyro master front and rear hub wheelset with 6001 cartridge bearings, abec-3.

I pressed in new bearings with some washers on a threaded rod and some nuts. The rear went fine and continues to behave to this day. The front is fine until about 20km after pressing the new cartridges but starts to develop a click or tick as it rotates. It gets progressively worse until it clicks most revolutions and sometimes several times during one revolution. It isn't in the same spot on the wheel that it does this. I am unable to replicate it by spinning the wheel or pressing on anything on the frame. I put another wheel with cup and cone hubs on it and the problem disappeared until I reinstalled the cartridge wheel. I was delicate with installing the cartridge axle "cone" and pressing it in so I don't believe it was damaged during installation.

I pressed in new bearings and it developed the same issue after about the same length of time. Could it be the locknuts on the axle are too tight or loose? I can't imagine 4 faulty bearings in a row.

Anyone have any ideas?

dabac

Regular cartridge bearings don't like axial loads very much. Unless there's a supporting sleeve over the axle, between the bearings it's real easy to kill them off quite fast by overtightening the locknuts.

Not that I can say with certainty that this is your problem.

Flyingblind9

Many bearings with axial load not perfectly tensioned get ruined very quickly. Depending on the washers you installed it with maybe you could've been putting an odd pressure on the inner race that could cause the bearings to start to fail?