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Old 07-10-09, 06:14 PM   #1
chas0039
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Odd sized Campy crank bolt.

I was working on a mid 1980s Pinarello with a Campy Super Record groupset and the Campy engraved crank bolt is 14.5 mm. I have never seen anything other than 14 mm and I was wondering if anyone remembers this setup. Also, where in blazes do I find a wrench?

Thanks
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Old 07-10-09, 06:31 PM   #2
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Are you sure it's not a 15?
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Old 07-11-09, 04:12 AM   #3
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I checked it with a micrometer. Also, a 15 mm socket is too big.
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Old 07-11-09, 04:22 AM   #4
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Time to try substituting a non-metric size socket. I bet a 9/16 or 19/32 socket will get the job done. Best of luck.
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Old 07-12-09, 05:09 PM   #5
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Unfortunately, all my 32 sockets are too thick to fit, even if they happen to be the right size. The LBS doesn't remember back that far so I guess I will let it go.

Thanks guys.
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Old 07-12-09, 06:12 PM   #6
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Take the frame to your friendly hardware store and see if you can find a socket which fits. My guess is for $3-6 you will find a socket that fits. ACE brand sockets are thin enough to fit in my Campy cranks.
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Old 07-12-09, 07:25 PM   #7
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Campy used a 15mm. The Japanese used 14mm, French used 16 or 17mm. A 9/16 wrench is almost a perfect substitute for a 14mm wrench. I went out to buy one of those wrenches park used to sell with 14/15/17, and found out that nobody sells those wrenches around here, if they exist at all. You need a thinwall 15. I don't know if Sears will still honor their lifetime guarantee when you break one of their sockets after you grind it down; they used to back when they were still run by people that knew what a good marketing ploy that was.
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Old 07-13-09, 06:39 AM   #8
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Thanks guys. The size of the bolt is about .35mm smaller than the usual 15mm bolt heads I have measured, but I will look for a thin 15mm socket. Glad they went to 14mm finally.
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Old 07-13-09, 10:28 AM   #9
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Originally Posted by chas0039 View Post
Thanks guys. The size of the bolt is about .35mm smaller than the usual 15mm bolt heads I have measured, but I will look for a thin 15mm socket. Glad they went to 14mm finally.
Hi,
I just solved the same problem (15mm crank bolt of an 70's Ofmega, Campagnolo clone) with a Craftsman 15mm 3/8 socket bought for $3.90 at Sears. The socket is 21.5mm in diameter that fit perfectly into the 21.8mm opening.
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Old 07-13-09, 11:34 AM   #10
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Have you tried a campy 'peanut butter' wrench?
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Old 07-13-09, 03:24 PM   #11
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Have you tried a campy 'peanut butter' wrench?
I saw that in the 1986 catalog and assumed it was the right fit, but I was not about to throw $40 on an assumption if it turned out that it was not for the exact bolt I had. I'll go with the thin wall route.

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