I put a 11 speed cassette (Shimano) on the wheel (the old one was 9s) but after tightening it, the freehub ain’t moving freely. Did a quick google search and found that maybe a spacer behind the cassette is missing. Didn’t need one on the wheel where the 11s was previously. Compared the freehubs and it seems like the one on the older wheel has a bit of a „lip“.
Does that make sense or could it be something else?
I do a lot of wrenching on my bikes but this is the first time I encountered something like this. Ordered some spacers just in case, hopefully the right ones.
Appreciate the help!
by ddarth7
3 Comments
Unfortunately 11speed cassettes are not backwards compatible with older 9 speed cassettes. A spacer would make the problem worse. I’m not sure how you were able to get the lock ring on tbh. The cassette would probably have rubbed on your frame as well.
You can attempt to find a freehub body that would be compatible with your hub if you’re married to the wheel.
Is it a 11 speed mtn cassette? (34t big cog or higher?) is your freehub body a hg11/12 or standard hg?
11-speed road cassettes using the HG11-freehub standard can’t be mounted to HG-freehubs.
Your options are basically:
1. Use one of the few 11s cassettes that use the HG-freehub, for example Shimano CS-HG700 11-34.
2. Get a new HG11-freehub.
3. Get a new wheel.
See [https://velo.outsideonline.com/road/road-racing/a-guide-to-freehub-body-and-cassette-compatibility/](https://velo.outsideonline.com/road/road-racing/a-guide-to-freehub-body-and-cassette-compatibility/)
Edit: saw in another comment that you are talking about at MTB-cassette. You should have a professional mechanic look at the wheel as no spacer are required. It might be that your freehub is missing an internal spacer or that the bearings need replacement