9 Sp Cassette on a RSX Hub loose

I installed a Shimano 9 Speed cassette on my 8 Sp. RSX hub and even
though it is tightened down all the way there is some play or
looseness on the cassette. I didn't have this problem on a 8 sp. 105
hub. Is there a difference? I thought all 8 speed hubs handled 9
speed cassettes, or do I need a spacer?

Thanks, Ron.

RonZ wrote:

I installed a Shimano 9 Speed cassette on my 8 Sp. RSX hub and even
though it is tightened down all the way there is some play or
looseness on the cassette. I didn't have this problem on a 8 sp. 105
hub. Is there a difference? I thought all 8 speed hubs handled 9
speed cassettes, or do I need a spacer?

Does this cassette top out with an 11 tooth sprocket? If so, you may
have a minor incompatibility.

See: http://sheldonbrown.com/k7.html#hyperdrivec for a detailed explanation.

Sheldon "It Goes To Eleven!" Brown
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| Imagination is more important than knowledge. |
| --Albert Einstein |
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Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

Sheldon Brown wrote:

RonZ wrote:

I installed a Shimano 9 Speed cassette on my 8 Sp. RSX hub and even
though it is tightened down all the way there is some play or
looseness on the cassette. I didn't have this problem on a 8 sp. 105
hub. Is there a difference? I thought all 8 speed hubs handled 9
speed cassettes, or do I need a spacer?

Does this cassette top out with an 11 tooth sprocket? If so, you may
have a minor incompatibility.


If it is a RSX it should be 11T compatible. Check that the endcog
doesn't wobble when you spin the cassette, it's all to easy to have it
jump out of synch when installing the lockring, and then it won't go
fully home.
If the cassette is tight on the body it could be that the freehub
bearings have develloped play

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Marten Gerritsen

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