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Early 80s campy crank issue

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Early 80s campy crank issue

Old 10-07-11, 12:23 AM
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rat
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Early 80s campy crank issue

So I have ruined the non-drive side crank on by beloved fixed gear conversion, and also stripped the bolt trying to get it back on. Sigh. It's an early 80s vintage campy BB and crankset. These parts are tough to find, especially in 170. Do I have another option as far as fitting a new crank? I mean, I don't even know what to order since the parts are pretty much unmarked. (see below) I've heard that only certain square-taper cranks will fit with older campy stuff.

On a similar note, is it better for crank health to use a smaller ring combination like 42-14 than say 53-17?
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Old 10-07-11, 12:55 AM
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Take the cup of the bolt out, take the bolt out.. and use a regular bolt in there, even at ebay u can find something similar that fits in there, those self extracting bolts are still in production by other companies. From what I understand of your description the bolt broke.

Looks like campagnolo victory to me, maybe wrong tho.

"42-14 than say 53-17" <-- this is your choice, I would use 42x16 tho.
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Old 10-07-11, 07:27 AM
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170 length is the EASIEST to find in older components, not that mid 80's is that old. The biggest issue you will find with that Victory crankset is new chainrings, as it uses an obsolete 116mm BCD. But if you would like to replace that crankarm, try posting a WTB in the C&V forum. I don't have one, but someone there might.

IIRC, that crankset used a 115mm Campy taper spindle, which was also used on just about all Campy cranks post '77 up until the introduction of C-Record and the Chorus group, so you could could go slightly mis-matched as well.
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Old 10-07-11, 06:20 PM
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Looks like a "Victory" crank. What exactly did you strip? If it's the pedal threads, a helicoil can fix that easily. If it's the extractor threads, you can use drill chuck remover wedges to remove the arm. Installation will still be in the Usual Manner, unless you've chewed up the square taper.

If the extractor threads, how did you manage that? Those arms are self-extracting with a 7mm Allen wrench. The outer ring of the self-extractor is left hand thread, so it's self-tightening when you remove the arm.
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Old 10-07-11, 06:23 PM
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Originally Posted by Ex Pres View Post
The biggest issue you will find with that Victory crankset is new chainrings, as it uses an obsolete 116mm BCD. But if you would like to replace that crankarm, try posting a WTB in the C&V forum.
FWIW, a Triomphe arm uses the same BCD, but lacks the self-extractor found on the Victory arms.
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Old 10-07-11, 07:32 PM
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It's the square taper on the arm that's wrecked, hence needing a new crank. I thought I could get away with just tightening it, and that's what chewed up the bolt. I'll look for a replacement on the buy and sell.

Thanks for the wisdom!
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Old 10-07-11, 10:02 PM
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Originally Posted by rat View Post
It's the square taper on the arm that's wrecked, hence needing a new crank. I thought I could get away with just tightening it, and that's what chewed up the bolt. I'll look for a replacement on the buy and sell.

Thanks for the wisdom!
Any Campy square-taper crank will fit your BB. It may be easier to find a whole crankset, though. (I've seen a couple at the Portland used-parts places.) Just remember to torque the bolts to 25 to 35 foot-pounds, otherwise you'll hog out the crankarm again.

FWIW: I have a '70's Campy crankset (no BB) I should sell, but I'm too lazy. It's 175mm arms, though.
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