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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 04-25-07, 04:09 PM   #1
dmg
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persistent loosening cone on rear hub

Here's a new one to me - my rear hub keeps loosening. I get the cones as tightened as possible without impeding rotation, crank down on the nut, put it on the bike, and everything's fine (a little side-to-side play, but nothing outrageous). Yet the next time I check it, there's way more wobbliness than I like. Today, after adjusting and tightening it last night, I did a tiny little skip and heard a noise, and lo and behold, it's wobbly again.

Hub is a Surly. I have another set of surlys that I don't think I've ever had to adjust. It's been in service for around a year, and I've only noticed the looseness in the past month or two. The wheel joined me on a January trip across the hood of a car, but seemed fine thereafter (wasn't even out of true). Any thoughts, junior detectives?
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Old 04-25-07, 04:16 PM   #2
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use a little blue lock tite on the lock nut and it should be fine locktite on locknut not cone mmk
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Old 04-25-07, 04:27 PM   #3
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This is a cartridge bearing hub, right, or are there free bearing surly hubs out there that I don't know about?
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Old 04-25-07, 07:07 PM   #4
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Yep, sealed bearing. I'll try some loctite on the nut, thanks.

Any conjecture on why it is getting loose? I've heard of people having surly hubs tighten up on them, but not loosening (I guess I'd choose loosening if it has to be one or the other).
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Old 04-25-07, 07:09 PM   #5
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its because the axle is just a straight axle and not keyed like all the 80s and suhc road hubs were with keyed washers.
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Old 04-25-07, 07:20 PM   #6
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For serious? Have I just been lucky with my other wheelsets, then? Hmm...
Do locknuts typically move in one direction only? Like, if I moved the cog to the other side, would it be more prone to tighten up and eat my bearings?
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Old 04-25-07, 07:24 PM   #7
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Quote:
Originally Posted by dmg
For serious? Have I just been lucky with my other wheelsets, then? Hmm...
Do locknuts typically move in one direction only? Like, if I moved the cog to the other side, would it be more prone to tighten up and eat my bearings?
keyed axles with keyed washers, like on all the 80s and such road hubs eliminate cone/locknut slippage.
one of the reasons why surly hubs are flawed.

yes i'm serious and i hope you know what i'm talking about
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Old 04-25-07, 08:25 PM   #8
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I thought pretty much all Taiwanese track hubs used a straight axle, though. And as I said, I haven't had any problems of this type with my other set of surlys. Although, yeah, there's some undeniable oversights in the design.
Well... hopefully loctite will do the job.
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Old 04-25-07, 08:49 PM   #9
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Quote:
Originally Posted by goldener
keyed axles with keyed washers, like on all the 80s and such road hubs eliminate cone/locknut slippage.
one of the reasons why surly hubs are flawed.

yes i'm serious and i hope you know what i'm talking about
useful little bit of knowledge. and I though I had it all figured out.
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Old 04-25-07, 08:50 PM   #10
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useful little bit of knowledge. and I though I had it all figured out.
believe me, the more i learn, the farther i am from figuring it all out...maybe a regression is in order..
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Old 04-25-07, 08:54 PM   #11
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Quote:
Originally Posted by dmg
(a little side-to-side play, but nothing outrageous). Yet the next time I check it, there's way more wobbliness than I like.
first, you didnt close your ( ). second, there shouldnt be any play, thats your problem. you should be able to get it to not play yet spin freely, it may take some work to find that point but its very possible.
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Old 04-25-07, 11:49 PM   #12
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have you tried counter tightening the crap out of the cone/locknut on one side before doing the adjustment?
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