^&& Speed Uniglide Compatibility?
01-08-23, 11:13 AM
#1
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^&& Speed Uniglide Compatibility?
Question for those who might know: Can you use a 7 speed Uniglide free hub body with 6 speeds? The reason I ask is that I am selling one in the classifieds and a potential buyer would like to use the freehub body to replace a worn out Uniglide freehub body, currently running 6 speeds? Is there and compatibility issue than one might encounter if they are swapped?
Thread for reference: https://www.bikeforums.net/classic-v...-cassette.html
Thread for reference: https://www.bikeforums.net/classic-v...-cassette.html
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01-08-23, 03:52 PM
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Question for those who might know: Can you use a 7 speed Uniglide free hub body with 6 speeds? The reason I ask is that I am selling one in the classifieds and a potential buyer would like to use the freehub body to replace a worn out Uniglide freehub body, currently running 6 speeds? Is there and compatibility issue than one might encounter if they are swapped?
Thread for reference: https://www.bikeforums.net/classic-v...-cassette.html
Thread for reference: https://www.bikeforums.net/classic-v...-cassette.html
01-08-23, 04:59 PM
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6 and 7 speed uniglide is the same. The cassettes are the same width and use the same threads to tighten the high sprocket. If it is going from 600 to 600 it shouldn't be a problem.
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01-08-23, 09:49 PM
#7
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Do you guys really know what your talking about. As far as I know Uniglide was a 6 speed set up. Uniglide is an old obsolete system that has a free hub that uses the smallest cog to lock the free hub down onto the axle..It's a complete pain in the ass to do anything with. If you're patient you can get a longer axle & put a normal free hub on the wheel. After that you can slide a 7 or 8 speed cog set on the wheel. I've done it. But, it was a very complicated & time consuming deal. It's all about whatever you can get out of the old remaining Shimano parts stock. Good luck with your project.
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01-09-23, 08:04 AM
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UG came in 5,6,7 and 8 speed flavors. Not really particularly fussy IMHO.
But shifting not as good as HG, for sure.
But shifting not as good as HG, for sure.
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01-09-23, 10:04 AM
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Quick question for the group. The below freehub looks to be Uniglide and Hyperglide compatible. This should work for 6/7 speed Uniglide or Hyperglide, correct?
01-09-23, 10:15 AM
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Looking at Deore LX hubs, the hub is a similar hybrid thingy and holds 7 speeds.
Is the 8 speed spacing significantly different with respect to the cogs? I am presuming you can sort of get 8 on if the spacing is less.
Have to check that out.
Is the 8 speed spacing significantly different with respect to the cogs? I am presuming you can sort of get 8 on if the spacing is less.
Have to check that out.
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01-09-23, 09:01 PM
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01-10-23, 06:09 AM
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01-10-23, 06:41 AM
#14
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Here are some more helpful sheldon brown links:
Cassette and frame spacing crib sheet.
https://sheldonbrown.com/cribsheet-spacing.html
Cross compatibility of different speed drivetrain components:
https://sheldonbrown.com/speeds.html
Cassette and frame spacing crib sheet.
https://sheldonbrown.com/cribsheet-spacing.html
Cross compatibility of different speed drivetrain components:
https://sheldonbrown.com/speeds.html
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01-10-23, 12:33 PM
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In fact, there is very strong evidence that Shimano also produced a 4-speed version of Uniglide (though I've never seen one). The FH-RM50-4 hub is noted in Shimano documentation as being a 4-speed hub. Its exploded view clearly shows it to be a freehub-type hub, and the exploded view shows a right freehub dust cover consistent with the hub being Unidglide only.
https://si.shimano.com/en/manual/search?model=FH-RM50-4
Last edited by Hondo6; 01-10-23 at 12:38 PM. Reason: Correct typo and add info.
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01-10-23, 03:26 PM
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In fact, there is very strong evidence that Shimano also produced a 4-speed version of Uniglide (though I've never seen one). The FH-RM50-4 hub is noted in Shimano documentation as being a 4-speed hub. Its exploded view clearly shows it to be a freehub-type hub, and the exploded view shows a right freehub dust cover consistent with the hub being Unidglide only.
https://si.shimano.com/en/manual/search?model=FH-RM50-4
https://si.shimano.com/en/manual/search?model=FH-RM50-4
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01-10-23, 03:41 PM
#18
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Won't say my brain exploded, or that I fell out of my chair. But I was very surprised bordering on shocked when I saw that hub's EV.
I would absolutely love to see one - as well as the corresponding cassette. Because it doesn't seem possible that Shimano would make one without the other.
I would absolutely love to see one - as well as the corresponding cassette. Because it doesn't seem possible that Shimano would make one without the other.
01-10-23, 09:22 PM
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Am I the only one who noticed the OLD on that 4 speed freehub is 126mm?
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01-11-23, 09:04 AM
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01-11-23, 10:15 AM
#21
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I noticed that too. But I didn't mention it because from what I've seen, solid axles were still used on a fair number of Shimano rear freehub-type hubs from that era, and even a bit later.
But it's still an oddity with respect to the axle in another respect - the axle's not 10mm diameter. EV says the axle is B.C. 3/8".
I would love to see one of these. They've got to be rare indeed.
01-11-23, 12:51 PM
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Nope. I even mentioned that a couple of days ago in my first comment concerning this oddity (different thread).
I noticed that too. But I didn't mention it because from what I've seen, solid axles were still used on a fair number of Shimano rear freehub-type hubs from that era, and even a bit later.
But it's still an oddity with respect to the axle in another respect - the axle's not 10mm diameter. EV says the axle is B.C. 3/8".
I would love to see one of these. They've got to be rare indeed.
I noticed that too. But I didn't mention it because from what I've seen, solid axles were still used on a fair number of Shimano rear freehub-type hubs from that era, and even a bit later.
But it's still an oddity with respect to the axle in another respect - the axle's not 10mm diameter. EV says the axle is B.C. 3/8".
I would love to see one of these. They've got to be rare indeed.
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01-11-23, 02:24 PM
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I caught that, too. Surprised that it wasn't 120mm OLD (or narrower.) Would love to know what the point of this hub was, if they had this much OLD to play with. Only possibility that comes to my mind is a really specific 4-speed OEM use.
