Joel
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Posts: 54
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Post by Joel on Jul 22, 2009 11:19:16 GMT -8
Hopefully this makes sense… I am new to the world of 10-speed cassettes and recently I realized that my rear race x-lite wheel (Bontrager Hub) W/ Shimano 105 cassette comes with this very thin “inner” spacer ring that slides in on the backside. It’s a bad move when you forget to put it on!
My question is… does this thin inner ring travel with the cassette or the Bontrager hub? In other words, if I swap out with a SRAM 10-speed cassette (which didn’t come with the spacer btw) do I still need the spacer ring because it stays with the hub - or is the ring specifically for the Shimano cassette (or all 10-speed cassettes)?
Does this make ANY sense?
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Post by Tom M on Jul 22, 2009 14:08:07 GMT -8
Shimano includes those steel 1mm spacers with each new 10-speed cassette. Those cassettes have their larger cogs on alloy spiders, and the spider has a recess where the spacer fits into it. I think the role of the spacer is to provide a steel contact surface where the cassette lands on the inboard end of the freehub body. Without the spacer, you'd have an alloy-on-steel situation, and the cassette body spider might gradually get notched. That's just my theory, but why else would they build the spider with a recess, then fill the recess with a spacer, instead of leaving out both the recess and spacer? I'm certainly open to any other theories  Some wheels also have their own dedicated spacer rings that should be kept with the wheel regardless of the cassette (9sp, 10sp). Many Mavic rear wheels have a dedicated spacer, to name the main example I can think of. |
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Joel
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Posts: 54
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Post by Joel on Jul 22, 2009 14:27:05 GMT -8
Shimano includes those steel 1mm spacers with each new 10-speed cassette. Those cassettes have their larger cogs on alloy spiders, and the spider has a recess where the spacer fits into it. I think the role of the spacer is to provide a steel contact surface where the cassette lands on the inboard end of the freehub body. Without the spacer, you'd have an alloy-on-steel situation, and the cassette body might gradually get notched. That's just my theory, but why else would they build the spider with a recess, then fill the recess with a spacer, instead of leaving out both the recess and spacer? I'm certainly open to any other theories Some wheels also have their own dedicated spacer rings that should be kept with the wheel regardless of the cassette (9sp, 10sp). Many Mavic rear wheels have a dedicated spacer, to name the main example I can think of. Sounds like a good theory to me, but of course I don't know anything. When my LBS delivered my new Madone, I got it home and instantly noticed an issue with the cassette. It was wobbling and skipping so bad that I couldn’t ride it at all. I took it back to them and they installed the inboard spacer and the problem vanished. So much for the test ride eh? Anyway, without that ring there’s apparently no riding at all. So, back to the topic of transfer, it sounds like it’s a Shimano 10-speed cassette thing and not a Bontrager hub thing. Did I read that right? That makes sense considering my new SRAM (not installed yet) doesn’t have that inboard ring with it. Joel |
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Post by Tom M on Jul 22, 2009 18:37:11 GMT -8
Agreed, I haven't seen any Bontrager wheelsets that come with spacers of their own. And that's a good thing, it's one less item to keep track of when swapping cassettes So your new SRAM 11-27 shouldn't need any spacers to jive with your Bontrager wheel properly. |
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Joel
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Posts: 54
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Post by Joel on Jul 22, 2009 21:21:55 GMT -8
Agreed, I haven't seen any Bontrager wheelsets that come with spacers of their own. And that's a good thing, it's one less item to keep track of when swapping cassettes So your new SRAM 11-27 shouldn't need any spacers to jive with your Bontrager wheel properly. Sweet! Thanks for the assistance Tom Joel |
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