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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 01-13-07, 05:18 PM   #1
roadfix
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Busted Axle Locknut

Here's a busted axle locknut off of a Formula rear hub. I hear breakage like this is common on these hubs. Where can I get an exact replacement? Most standard serrated axle locknuts I've seen are slightly smaller on outside diameter and therefore may not bite against the trackends as well as these guys.






Last edited by roadfix; 01-13-07 at 05:23 PM.
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Old 01-13-07, 05:53 PM   #2
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i'm looking to replace a couple sets of these too. hopefully with beefier ones. i know someone here has the juice...
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Old 01-13-07, 06:01 PM   #3
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I hate to be the jackhole that tells you to search, but there seriously have been a ton of threads on this, and here are 4 of them:

http://bikeforums.net/showthread.php?t=207346

http://bikeforums.net/showthread.php?t=233978

http://bikeforums.net/showthread.php?t=184502

http://bikeforums.net/showthread.php?t=84166

etc. ad nauseam
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Old 01-13-07, 06:17 PM   #4
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Originally Posted by BostonFixed
I hate to be the jackhole that tells you to search, but there seriously have been a ton of threads on this, and here are 4 of them:

http://bikeforums.net/showthread.php?t=207346

http://bikeforums.net/showthread.php?t=233978

http://bikeforums.net/showthread.php?t=184502

http://bikeforums.net/showthread.php?t=84166

etc. ad nauseam
Thanks Boston...I was aware of most of those threads and even others relating to this breakage but I was specifically looking for an exact replacement, something at least this size (diameter wise), or something even beefier......if there is such a thing.
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Old 01-13-07, 06:29 PM   #5
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Originally Posted by The Fixer
Thanks Boston...I was aware of most of those threads and even others relating to this breakage but I was specifically looking for an exact replacement, something at least this size (diameter wise), or something even beefier......if there is such a thing.
Just skimming those threads it seems the consensus is that it is an obscure but available part (does that make any sense?), but most bike shops should have a replacement. Some people say that their replacement was beefier than the stock piece, so there must be different replacement types out there.

www.aebike.com and www.loosescrews.com both have good prices and a good selection of little parts if you find the model # or measurements of your part.

I'm sorry that I can't give you an exact link to where you can buy the part online.
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Old 01-13-07, 06:41 PM   #6
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you want 10mm diameter, 1mm thread pitch. pretty standard for a track axle. i wouldn't recommend an identical replacement if you can avoid it, you'll just snap that one too.
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Old 01-13-07, 06:56 PM   #7
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you want 10mm diameter, 1mm thread pitch. pretty standard for a track axle. i wouldn't recommend an identical replacement if you can avoid it, you'll just snap that one too.
Yeah you're right. In fact, I was just looking at my Campy track hubs and they use standard serrated locknuts like ones shown in loose screws. I'll just go to my LBS and see what they have.....
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Old 01-13-07, 07:07 PM   #8
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I had no problem replacing a broken one on my Formula with a different one of a different shape but the same pitch.
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