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How tight? I stripped the cable bolt on my front canti.(5 posts)

How tight? I stripped the cable bolt on my front canti.Kristin
Aug 15, 2003 9:09 AM
I applied the same logic to the canti's that I do on my road brakes. The bolt that holds the cable on needs to be VERY tight. So I was cranking it down and it stripped out quite easily. Funny thing, the cable seems to be in there quite tight--though I'm not sure its trustworth. This happened because:

A) On canti's, this bolt doesn't need to be as tight as road brakes
B) Old XT stuff strips easily
C) I misunderstood and have probably over-tightened my road brakes too.
D) Mechanical Ofe - go directly to jail, do not pass go, do not collect $200.
Did you put steroids in your Wheaties?KG 361
Aug 15, 2003 9:23 AM
I use pretty much the same philosophy when it comes to those brake cables. Perhaps it was just a bad bolt?
I wish I had stripped the bolt. That would be cheap to fix.Kristin
Aug 15, 2003 9:49 AM
I always start with the assumption (correctly) that I am weak. But appearantly not so much.
How tight is too tight?Ironbutt
Aug 15, 2003 10:07 AM
First, congratulations for attempting your own bike maintenance/repair. Other than this board, there aren't too many women who do their own work. Not too many guys, either. That being said, there aren't too many fasteners on a bike that need to be tightened "as tight as you can make it." The brake cable clamping bolt is very small in diameter, and is (usually) threaded into a part that is softer alumnium alloy. If it was the bolt itself that stripped, no problem. The nearest decent bike shop should be able to provide you with a replacement bolt. If it was the threaded hole in the brake arm that stripped, I'd remove the entire arm assembly, and take it to either a good bike shop or a machine shop where the hole could be retapped to threads of a slightly larger size than original. Then a replacement stainless steel bolt in the newly tapped hole, reassemble, and you're back in business.
Seriously, about the only thing on a bike that needs to be really tight is the cartridge bottom bracket, and even that should be installed using a torque wrench. Use caution on all those other little bolts, they're easy to strip.
Just tight enough not to strip it.MR_GRUMPY
Aug 15, 2003 10:12 AM
Sounds like damaged threads on the bolt. Any shop should have spares.