Cassette wobble

[aicabsolut]

Is Ultegra "cheap" enough to wobble? It seems like it's in the freehub on the wheel, not in the cassette itself. The wheels are Ultegra level as well. So yeah, not great, but I've seen tons of other wheels with no wobble nice or not.

[ridebikeme]

Is it the freehub that has movement in it? Have you been able to check that??

[aicabsolut]

I don't really know how to check it necessarily, but it has to be the freehub. It only happens when the wheel spins as if I'm coasting. When I pedal (cassette rotating), it looks totally normal. Stop pedaling, and I can watch the cassette undulate (looking at the biggest cog). It's sort of like watching an untrue wheel from the top. Only the wheel is true, so the only wobbling is at the cassette when it's still and the wheel is spinning.

I emailed a friend at the shop about it, thinking it might be an installation error or something. However, I can't detect any looseness in the cassette itself. It seems firmly and properly attached to the hub. So, I don't think the cassette is loose or busted (it performs well and it's new). It's just an unsettling thing to look at, and it seems to have gotten worse with this new cassette from the old 105 one.

I've at least seemed to fix the shifting problems, but I still don't like the looks of the wobble. I want new wheels anyway, but I want to keep these as my bombproof training set. I won't have $ for new wheels anytime soon either.

[ridebikeme]

It may be something as easy as tightening your freehub... have your LBS check it. It's a quick fix, and if that isn't it, then I would replace it... it' isn't a very big expense.(providing of course it can be replaced). Remind me again, what type of wheel/freehub is it?

[aicabsolut]

Shimano wheel throughout. R560, which I think was around ultegra level a few years ago.

About 1.5 years ago, the LBS tried to tinker with it when they first noticed a little bit of wobble when inspecting the bike for me after a mild crash. The verdict from them was that the freehub didn't need replaced.

How do you tighten the freehub? (just curious...I don't have the tools, but I may be able to get them from a friend)

[ridebikeme]

A 10mm allen wrench will remove or tighten....more than likely it will be something that you will need to replace.Good luck!

[aicabsolut]

yeah, mine aren't that big i don't think. i'll get it checked out.