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Old 04-08-05, 05:09 AM   #1
Nick Ingamells
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Shimano Hyperglide problem

Hi - am attempting to replace a Shimano Hglide cassette.When I put the new cassette and tighten the lockring the 2 'loose' cogs remain so. The freehub body is threaded at one end and appears to be longer than a freehub on another bike, BUT the cassette (stamped Hyperglide on the lockring and H on the cogs)I've removed is exactly the same depth as the new one! Does this mean that Shimano produced a slightly different cassette to accomodate threaded freehubs and do I therefore need to change the freehub to cope with a new cassette. Hope this makes sense! Cheers - Nick
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Old 04-08-05, 05:37 AM   #2
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Please tell us:
(1) how old the freehub is.
(2) how many cogs.
(3) what components are you running.

I'm not sure I can help, but I'll try.
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Old 04-08-05, 05:56 AM   #3
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Sure - 7speed, age unknown but 5-10 years?, rear mech is shimano 200 GS, front changers are STI. Hope this helps! Nick
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Old 04-08-05, 07:12 AM   #4
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Quote:
Originally Posted by Nick Ingamells
Hi - am attempting to replace a Shimano Hglide cassette.When I put the new cassette and tighten the lockring the 2 'loose' cogs remain so. The freehub body is threaded at one end and appears to be longer than a freehub on another bike, BUT the cassette (stamped Hyperglide on the lockring and H on the cogs)I've removed is exactly the same depth as the new one! Does this mean that Shimano produced a slightly different cassette to accomodate threaded freehubs and do I therefore need to change the freehub to cope with a new cassette. Hope this makes sense! Cheers - Nick
Assuming you have all the spacers that go with the cassette,you need a 1mm spacer on the hub body before the cassette.
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Old 04-08-05, 07:13 AM   #5
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Quote:
Originally Posted by Applehead57
Please tell us:
(1) how old the freehub is.
(2) how many cogs.
(3) what components are you running.

I'm not sure I can help, but I'll try.
None of that has anything to do with it.
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Old 04-08-05, 09:42 AM   #6
Gonzo Bob
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Sounds like what you have is a HyperGlide freehub that is externally threaded to also accept Uniglide cassettes (precursor to HyperGlide). Are you trying to put on a cassette that starts with an 11T? If so, you'll need to put a thin 1mm spacer onto the freehub body before you put the cassette on. The Uniglide threading on the freehub body does not allow the 11T cog to slide fully on.
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Old 04-11-05, 12:18 AM   #7
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Many thanks. I've changed the freehub and all is fine now but thanks for the info - just in case it happens again!! Cheers - Nick
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Old 04-11-05, 02:09 AM   #8
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Quote:
Originally Posted by Nick Ingamells
Hi - am attempting to replace a Shimano Hglide cassette.When I put the new cassette and tighten the lockring the 2 'loose' cogs remain so. The freehub body is threaded at one end and appears to be longer than a freehub on another bike, BUT the cassette (stamped Hyperglide on the lockring and H on the cogs)I've removed is exactly the same depth as the new one! Does this mean that Shimano produced a slightly different cassette to accomodate threaded freehubs and do I therefore need to change the freehub to cope with a new cassette. Hope this makes sense! Cheers - Nick
Hyperglide freehubs are generally not threaded. Uniglide freehubs are threaded with the sprockets splined but for the smallest sprocket. The smallest sprocket is threaded for holding the larger sprockets in placed. From this end can't be sure whether someone put a Hyperglide cassette on your Uniglide hub or you found some sort of freehub designed to accept both types of cassettes.

What brand is this freehub? Are there any other identifying markings?

Were the old cassette sprockets also loose?
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Old 04-11-05, 03:44 AM   #9
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Hi - no markings at all on the freehub. The difference between the threaded and unthreaded freehubs seems to be that on the threaded version the splines go right up to the end of the freehub and the last (smallest) sprocket is open at the end of the grooves to enable it to slide down as far as the next sprocket. The smallest sprocket on the new cassette has the ends of the grooves closed which fits on the unthreaded freehub because the splines stop before the outer end. Hope this is understandable!! The old cassette sprockets weren't loose, just worn.
Cheers - Nick
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