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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 03-18-08, 01:40 PM   #1
Rob1900
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"Mushroomed pin" Chain

So a friend of mine who rides CX gave me a 1/8" chain, it was free so i couldnt say no, he told me that I might not be able to use a chain tool on it becuase of the "Mushroomed" pins that prevent the chain from stretching, its a BMX race chain, so my question....Is my friend right and ill just be wasting my time be trying to take a few links out of it with a tool tomorrow, or is he talking crap?

Last edited by Rob1900; 03-18-08 at 04:17 PM. Reason: spelling
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Old 03-18-08, 01:42 PM   #2
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Once you punch it out, it's done - if it's mushroomed. Unless you like chain failure. Rejoin with a quicklink. You may be able to get away with it on some SS/Fixed specific chains but on derailleur chains = disaster waiting to happen.
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Old 03-18-08, 01:44 PM   #3
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You can use your chain tool to break the chain, but I would not try to just push a used pin back in the rejoin it. Such chains usually use a quick link system. I am sure you can get a spare at your LBS.

EDIT: operator beat me to it, but he is right
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Old 03-18-08, 01:58 PM   #4
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Dude, it's totally worth the $10-15 dollars spent on the new chain of your choice to have the peace of mind of knowing what you have, the condition it's in, and its fitments.

Remember, the chain is your transmission AND brakes of this vehicle.



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Originally Posted by Rob1900 View Post
So a friend of mine who rides CX gave me a 1/8" chain, it was free so i couldnt say no
You can always say "no." A chain that isn't right for your bike will just make work for you.
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Old 03-18-08, 02:53 PM   #5
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i agree with what has been said so far.

http://www.parktool.com/repair/readhowto.asp?id=25
go down to the part where it talks about shimano chains, it has good information and pictures about mushroomed pins.
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