How do I know if I need a spacer for my 10-speed cassette?
07-15-14, 08:02 AM
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How do I know if I need a spacer for my 10-speed cassette?
I just finished building a wheel for the first time. The rear wheel that came with my bike has a thin spacer that gets placed on the hub before the cassette slides on. Does every 10-speed setup need this spacer? Or is it only for hubs that are 11-speed compatible, and therefore need a spacer to accept a 10-speed cassette?
My new hub is a Shimano XT 756 Disc hub and I'm trying to figure out if I need the spacer when I transfer the old cassette over.
My new hub is a Shimano XT 756 Disc hub and I'm trying to figure out if I need the spacer when I transfer the old cassette over.
07-15-14, 10:46 AM
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Same way you know if you need one on a threadless headset.
The same principle applies.
The cassette has to overhang the front of the freehub body slightly. That allows the lockring to securely tighten the cassette against the back of the freehub body, before bottoming out against the freehub's face.
This is a general rule and applies to ALL cassettes and freehubs. Understanding the rule spares you from memorizing which cassette/freehiub combinations need a spacer and how wide it should be.
The same principle applies.
The cassette has to overhang the front of the freehub body slightly. That allows the lockring to securely tighten the cassette against the back of the freehub body, before bottoming out against the freehub's face.
This is a general rule and applies to ALL cassettes and freehubs. Understanding the rule spares you from memorizing which cassette/freehiub combinations need a spacer and how wide it should be.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
07-15-14, 11:00 AM
#3
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Put the cassette on w/o the spacer: if you tighten down the lockring and there is side to side play of the cassette on the freehub, you need a spacer.
Put the cassette on w/ a spacer: if you cannot engage the lockring with the freehub threading, you need to remove it.
In all other situations you should be fine, but of course you will probably need to adjust your RD limit screws and cable tension any time you are playing with a new hub/cass/spacer setup.
Put the cassette on w/ a spacer: if you cannot engage the lockring with the freehub threading, you need to remove it.
In all other situations you should be fine, but of course you will probably need to adjust your RD limit screws and cable tension any time you are playing with a new hub/cass/spacer setup.
