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Ultegra 10sp Cassette - extra ring

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Ultegra 10sp Cassette - extra ring

Old 07-15-08, 08:21 PM
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Pookie4G
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Ultegra 10sp Cassette - extra ring

I am mounting an Ultegra 10 Sp 11-23 to a Mavis Ksyrium SL wheel. I have an extra piece leftover that doesn't seem to fit. Its a thin ring - perfectly round inside and out. According to the diagram it is described as a "Lock Ring Spacer" and should be sandwiched between the smallest gear and the lock ring. Problem is that it is too large in circumference to fit there because the outer rim would interfere with the cogs and the inner ring is so large it won't stay centered under the lock ring. There was another spacer that had the hub grooves cut into it that went onto the wheels 1st.

I'm totally confused as to what I'm supposed to do with this ring.

Thanks
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Old 07-15-08, 08:23 PM
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beebleb
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I think that thin ring that perfectly round was supposed to go first in, not the spacer with the hub grooves cut into it. Is the "other spacer" a gray plastic one? or a metal one?
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Old 07-15-08, 08:26 PM
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It goes behind the biggest cog, but you shouldn't need it with the ksyriums, they use their own 10 speed spacer. Its a lot thicker, and should be with the wheel. The lock ring spacer is already on the lock ring.
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Old 07-15-08, 08:26 PM
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I'm sure you're referring to the 1mm low spacer that goes in first.

I wasn't too sure what to do with it either and got answer from Easton.

Discussed here (go further down the discussion regarding low spacer):

https://www.bikeforums.net/road-cycling/440104-help-cassette-installation-easton-wheels.html
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Old 07-15-08, 08:34 PM
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The other spacer with the hub grooves is a grey metal one. It that the one that goes on top behind the lock ring?
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Old 07-15-08, 09:19 PM
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So now the cassette is stacked with the hub grooved spacer, then the round thin ring spacer then all the cogs then the lock ring. If I'm using an extra spacer, will this throw off the gearing?
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Old 07-15-08, 09:35 PM
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Listen...the small spacer that comes with 10spd Shimano cassettes is meant to go on to Shimano style 8/9 freehub bodies to "take out the slack" that is left when using a 10spd cassette.

The spacers that go in between the cogs have the notching for the freehub spline.

The "lockring spacer" is a tiny piece of shim that is installed on the locking already.

As mentioned you should not have to use the small spacer - which goes on first - with your Seeeeerrrrreeeeuuummmms. They come with a thicker base spacer that can be used with 10spd cassettes.

If you put too many spacers on you can run into frame clearance issues wheel detonation caused by overshifting the chain (oops...the last gear isn't where it was supposed to be), or even possibly not be able to seat the lockring correctly.

Not having enough spacers in there will result in a tightened lockring with cogs that are not locked down.

Pretty hard to screw it up.
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Old 07-16-08, 08:48 AM
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I have Ultegra 10-sp as well on Ksyrium Elites. I use a thick, 2mm spacer AND a thinner 1mm spacer behind the largest cog. When I only used the 2mm spacer, the cassette was a little loose and creaked and moaned all day. Bike shop I took it to showed me the error of my ways.

re: frame clearance issues
I've never had a problem with this. I have played around and put too many spacers on another wheel (Open Pro/Ultegra hub). Only thing that happened is I couldn't get the lockring to tighten...threads wouldn't catch.

But then, I'm not an expert and these other guys I'm sure have way more experience than me.
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Old 07-16-08, 05:44 PM
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Originally Posted by Psimet2001 View Post
As mentioned you should not have to use the small spacer - which goes on first - with your Seeeeerrrrreeeeuuummmms. They come with a thicker base spacer that can be used with 10spd cassettes.
.
I dis agree. the Mavic spacer is to make the freehub acept all shimano cassettes and the thin spacer that comes with the 10 speed cassette is needed just as it would be on a 9 speed hub.
I have Ksyriums and 10 sp. D/A and use both.
Trust me.
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Old 07-16-08, 07:48 PM
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I don't have a chain whip to remove the lockring so I can't put that low spacer on until the weekend. However, the cassette is locked down pretty tight with no movement of the cogs. When I shift onto the small front cog (compact 50/34) and the smallest cog (11t) I hear a slight rubbing sound. If I put that 1 mm spacer back on, it would push that little cog further out and that sound would get louder I would assume. Would that be an issue?
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