Hi, I’ve got these serration marks on my free hub body, any ideas why it’s happening? I’ve not noticed any performance issues with shifting but would replace if advised so to avoid further damage to the overall drivetrain/wheels. These are the CERO RC50’s carbon disc wheelset.
Cheers all
by LFM47
8 Comments
No looks fine. Make sure the lock ring is properly torqued when you install the cassette
Ride it! Torque it to spec next time if possible.
Steel sprockets do tend to dig into aluminium freehub bodies, but small marks like that are nothing to worry about.
When you put the sprockets back on, tighten the lockring to 40Nm aka quite a bit tighter than it seems is needed just to keep everything in place.
It happens because Shimano designed their cassette body for steel, with shallow spines. After switching to aluminum cassette bodies, the shallow splines are not sturdy enough, but they didn’t want to change the design which would be a massive change.
Campagnolo cassettes don’t have the same degree of problem because their splines are deeper, with more contact area.
Spank call their freehub “Bite Block” for a reason 🙂
I would smooth it out a bit (on top) before putting a cassette on.
Then again, I would (do) ride a steel freehub (where this simply isn’t an issue), but I guess that would defeat having carbon wheels…
looks fine
No. Nothing wrong with that mate.