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Frozen hub fixes

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Frozen hub fixes

Old 12-28-11, 01:55 PM
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Frozen hub fixes

I have a hub that is not engaging in temps under 30 degrees. I originally thought it was the cassette but a new cassette installed had the same issue. I understand it is probably grease freezing up in the hub. Is there any easy resolution short of disassembing the hub and removing the grease? Should I just change to a wheel that I know is good in freezing temps? Thanks.
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Old 12-28-11, 03:28 PM
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change the wheel or put in grease that can work in lower temps . like Parktools' poloylube 1000 .
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Old 12-28-11, 03:29 PM
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i'm going to assume you mean you think that the pawls in the freehub are not engaging because the lubricant is too thick at temps below 30 degrees. although 30 degrees is suspicious in that that is about the freezing point of water. hmmmmm??? might think about putting it in the oven at low temp for a few hours.

if that doesn't work, or you don't want to try that, i think i would get some kersene and dunk the freehub portion of the rear hub in it, after i removed it from the rear hub shell. if i couldn't figure out how to remove it and the lbs couldn't help i would still dunk it, and take my chances with the drive side bearings. of course if the hub has loose ball bearings you can just repack them. cartridge bearings can be replaced or you may be able to repack them too. i don't know.
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Old 12-28-11, 04:14 PM
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What is the make and model of your hub? I also believe you are describing the freehub body and either the grease is too heavy or it got water inside. Changing the cassette (the collection of cogs) has no effect on whether the freehub works or not.

Flushing the freehub body out with solvent, then relubing with light oil should restore it's function. Grease is rarely to never needed in a freehub body. Light enough grease can be ok but oil is more than sufficient and isn't prone to temperature problems.
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Old 12-28-11, 04:42 PM
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Originally Posted by HillRider
What is the make and model of your hub? I also believe you are describing the freehub body and either the grease is too heavy or it got water inside. Changing the cassette (the collection of cogs) has no effect on whether the freehub works or not.

Flushing the freehub body out with solvent, then relubing with light oil should restore it's function. Grease is rarely to never needed in a freehub body. Light enough grease can be ok but oil is more than sufficient and isn't prone to temperature problems.
+1 A cassette cannot be the problem because it has no moving parts. Freehub bodies don't need grease, oil is fine. I'd remove the freehub from the hub, clean, and oil it.

Or were you talking about a thread-on freewheel? Same procedure either way.
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Old 12-28-11, 04:56 PM
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Easy fix. https://www.parktool.com/blog/repair-...reehub-service
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Old 12-28-11, 06:24 PM
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This is one reason why fixed gear bikes are popular for off-season riding -- no pawls to freeze up.

You could get a fixed gear rear wheel and shorten your chain for a quick 'n' easy conversion.
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