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Indent in rear dropout from track nut

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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)

Indent in rear dropout from track nut

Old 05-19-10, 06:28 AM
  #1  
greezychicken
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Indent in rear dropout from track nut

I have an aluminum Langster Comp and one of the dropouts has an impression from the rear track nuts. Its like the nut was digging into the dropout so there's an indented mark. Is there anything I can do about it? How much would it cost to get the dropouts replaced on the frame?

Am I just screwed now? I'm worried about the wheel slipping out because of this.
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Old 05-19-10, 06:36 AM
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that's why most aluminum track ends have steel inserts. there's not much to do about it and having the ends replaced would cost a lot unless you have some kind of hookup.

are the indents really uneven? i'd just keep using them with the nut in the indent as long as it has a large contact area. if not, you could try repairing the indents with a torch, hammer, and file... but that's probably too dangerous unless you know a lot about working with aluminum. your only viable solution is to use the frame as a singlespeed that doesn't need tension.
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Old 05-19-10, 06:41 AM
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there is a built-in washer for the axle nut, right?
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Old 05-19-10, 07:57 AM
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Yes, there's a built in washer. The indent is a pretty good sized groove on the dropout.
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Old 05-19-10, 08:31 AM
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A good welder could repair that by filling in the metal then filing the surfaces back to original. I've done similar projects many times.
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Old 05-19-10, 08:47 AM
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forget it. You're fine.
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Old 05-19-10, 09:01 AM
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Originally Posted by thadcombs View Post
**** it. You're screwed.
fixed.
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Old 05-19-10, 10:31 AM
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This is why I use chain tensioners on my GTB.
Spreads the load over the dropout surface so it doesn't mark up the frame at all.
As a side benefit... it helps me center up a 25 tire when there is only mm to spare at proper chain tension.

Last edited by chevy42083; 05-19-10 at 10:50 AM.
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Old 05-22-10, 08:30 PM
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Seriously though, it does not matter. Back when I had an aluminum BMX bike, the dropouts would get pretty screwed up. As long as your wheel still grips the dropouts without moving it should be fine.
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