Help finding a campy 11 speed rear derailleur pivot bolt!
06-23-15, 08:27 AM
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Help finding a campy 11 speed rear derailleur pivot bolt!
Somehow one of the gold (brass?) bolts that connects either end of the "carbon rod" on my 11-speed Chorus derailleur managed to shake it self loose and disappear. Does anyone know where I would be able to find one of these? I am afraid it will need to be a take off from a busted one.
It is a hollow bolt, threaded at the bottom and has a 3.5mm kex female at the top.
I believe the bolt is identical to all the current models with a similar shaped carbon rod.
Thanks!
It is a hollow bolt, threaded at the bottom and has a 3.5mm kex female at the top.
I believe the bolt is identical to all the current models with a similar shaped carbon rod.
Thanks!
06-24-15, 08:52 PM
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Does anyone know if this is a regular bolt I can just use with a bushing? Anyone have any insight into what threads likely to be on this bolt? Thanks again.
06-24-15, 09:00 PM
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This is a "shoulder bolt" with the distance from the first stop at the threaded end to the shoulder under the head, exactly measured to match the length needed for the job. That allows it to be tightened tight without worrying about any binding. It should not have walked out, but IME "should have" is a useless phrase phrase when speaking about mechanical issues.
However, you have no choice about getting the correct shoulder bolt, unless you're willing to do a bit of juryrigging with improvied parts until you can source one from a crashed derailleur (the only place you'll ever find one).
Go to the racing forum, and put in a request for an organ transplant from a crashed bike. Then wait, but it shouldn't be that long.
However, you have no choice about getting the correct shoulder bolt, unless you're willing to do a bit of juryrigging with improvied parts until you can source one from a crashed derailleur (the only place you'll ever find one).
Go to the racing forum, and put in a request for an organ transplant from a crashed bike. Then wait, but it shouldn't be that long.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
06-25-15, 03:45 AM
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That's anodised aluminium.
Looks like maybe a M6 thread (it'll be metric), and you might just be able to get a brass sleeve machined to copy your other bolts... But yeah, your best bet is trying to find a busted one from somewhere to pillage.
BITD, Campy used to do all sorts of odd spares, but AFAIK those days are over
BITD, Campy used to do all sorts of odd spares, but AFAIK those days are over
06-25-15, 09:08 PM
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I think you can still get that as a part through QBP from a bike shop. Good idea on going to the racer forum and asking for a donation, I've got an Athena derailer that would cost me $50 to get a new hanger bolt put on (you can't remove and those parts on the most recent 11 speed parts without a proprietary tool that you can't buy either, the c-clip is gone) and I figured I'd just replace that whole portion of the derailer with an older one that does have a serviceable bolt (if I ever find one). OP: if you go that route and get a whole derailer let me know.
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