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Will 8sp Cassette fit 10/11 hub?

Old 07-23-13, 07:56 AM
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Will 8sp Cassette fit 10/11 hub?

Hi everybody - just trying to find out if an 8sp Shimano HyperGlide cassette will fit on a hub rated as 10/11sp. It's my understanding the 10 & 11 cassettes are a little narrower, so wondering if these new hubs will work for my 8?

Thanks,

Ben
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Old 07-23-13, 08:09 AM
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Nope...
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Old 07-23-13, 08:36 AM
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Actually, it depends. A few are 10s/11s only; and others, while labeled as 10s11s, will take 8s or newer, but will need a spacer on the freehub behind the cassette.
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Old 07-23-13, 09:30 AM
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Originally Posted by demoncyclist
A few are 10s/11s only
Interesting, what's changed on the new ones to make them incompatible with 8 and 9-speeds?
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Old 07-23-13, 09:38 AM
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Thanks demoncyclist. I'm wondering... what exactly is the difference? Does that mean the specifically "10/11 only" hubs have less room to fit the cassette? Is there a spec I could look for to know which is which?

In the bigger picture, I'm perfectly delighted with everything about my 20-year-old Quintana Roo Superform, but am thinking about some newer faster wheels to add to the mix. Hence this confusion...

Thanks again,

Ben
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Old 07-23-13, 09:59 AM
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AFAIK, Shimano's 11-speed freehub bodies are slightly wider than the former 8/9/10-speed but have the same spline pattern. So, an 8 or 9-speed cassette will fit using a specific spacer, sort of like a 7-speed cassette on an 8/9/10-speed body. A 10-speed cassette will fit using the same spacer plus the 1 mm spacer that comes with all 10-speed cassettes.
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Old 07-23-13, 11:20 AM
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IIRC, there were a couple of Shimano wheels- upper level stuff- that were 10s only- they had a different height to the splines. So, a 10s cassette would fit on any wheel with the included spacer, but an 8s or 9s cassette would not fit on these wheels at all.
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Old 07-23-13, 12:22 PM
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Originally Posted by demoncyclist
IIRC, there were a couple of Shimano wheels- upper level stuff- that were 10s only-
yes, this was the 7850 series of hubs, which were 10 speed only; they are several years old now, so unless 2nd hand or NOS, you are unlikely to see them. All other 9 & 10 speed Shimano hubs will take 8 speed with no issues.
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Old 07-23-13, 01:57 PM
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Originally Posted by jimc101
yes, this was the 7850 series of hubs, which were 10 speed only; they are several years old now, so unless 2nd hand or NOS, you are unlikely to see them. All other 9 & 10 speed Shimano hubs will take 8 speed with no issues.
As will an "11-speed" freehub body with the additional spacer. That's what the OP was asking about.
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Old 07-23-13, 02:09 PM
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I also imagine that some other brand wheels are saying they are 10/11 compatible, when they are, in fact compatible with 8s and newer. I think that is what was confusing the OP, since he wasn't specific about which wheelset he is looking at.
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Old 07-23-13, 03:28 PM
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Ah yes - OP here - was looking at what seemed to be some decent affordable new 650c wheels but they're listed as 10/11s. Since I'm accustomed to seeing "8/9/10" I was wondering if the "10/11" meant we'd crossed over into some new territory that no longer allowed for 8 & 9. Anyway, sounds like with the use of spacers (maybe like these?) all would be fine. Thanks to everybody for the quick responses! So glad I joined "bikeforums.net" today.
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Old 07-23-13, 04:56 PM
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Personally I would avoid those wheels... I'd get some with Shimano hubs and not paired spokes. But that's your call. I would expect those wheels to be heavy (which they are!) and not durable.

But they should definitely fit a Shimano 8/9/10/11 speed cassette. If you have to use an extra spacer you'll find that out soon enough.
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Old 07-24-13, 08:26 AM
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For what it's worth, & as perhaps a final note on this subject, I was informed elsewhere that "To fit an 8 speed cassette to an 11 speed hub you will need to use a 1.85mm spacer."
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