What Is This Campy Tool For?
 

At the bottom of a parts box I found this small tool with the Campagnolo logo on it. What is the purpose for it?
http://i62.photobucket.com/albums/h8...55740E98CC.jpg

I have absolutely no idea. I will guess it's a NDS adjustable bb cup spanner. Like a pin spanner.

It's to tighten your chain rings; you turn on one side with a hex key and this hold the other side in place.

Yep. The two tabs on the tool fit into the slots on the backside of the chainring bolt.

I believe that's a chainring bolt tool.

I like that design better than the design of the one I have.

It's a chainring nut tool.

I like the little disagreement between posts no. 5 and 7 over the proper name for this tool. I think the nuts have it, :)

I did laugh at that. :lol:

Thanx for helping my curiosity. For a moment it crossed my mind that there must be something that needed maintenance that I have neglected. :)

The winner!

or you could just use a dime.

not sure if that's a federal crime or not.

sometimes, i have to put the dime in a set of vise-grips.

Handy little sucker.

When restoring the Colnago last summer I removed the chain rings from the spider so to polish them up. It was no trouble dismantling without the tool (though the feeling of being a professional team mechanic eluded me).

They are the proper tool to use. The correct length chain ring bolt when tight should be flush with back of the nut. It's hard to get a makeshift object work without the possibility of damaging the threads or maring the chainring.

I have a Park tool that fits Shimano.

It's a Campagnolo #768 tool: :innocent:

http://www.os2.dhs.org/~john/campy-768.jpg

Hah, we have a game of trivial pursuit going on here and it looks like @JohnDThompson may be the winner.

But can you spread peanut butter with it?

Indeed, one came in the tool kit w/ other useful objects along w/ my '68 Paramount.
Sold the frameset for Stupid $$$, kept the kit....still have the "peanut butter" wrench in my FG flats kit today.

-Bandera

FWIW, the text description from the catalog is "Chainwheel Screw Peg Spanner," or in Italian "Chiave per dadi fissaggio ingranaggi guarnitura."

Back in the day, one observation among the mechanics was that a tool like this was needed with Sugino, SR, and Shimano cranks, but not with Campagnolo Strada cranks.
The Pista cranks had a nice feature where perimeter teeth bit into the crank arm spider back side and the "chainwheel screw pegs" stayed put, making changing chainrings at the track nice and easy.

You know, after reading all this I'm pretty sure it is a chainring nut tool required for tightening chainring bolts. I have a CRNT, a Sugino I think, and it is quite handy.

Yes, Campagnolo had a patent on that feature. Once it expired, other companies started knurling their chainring bolts as well.

http://www.os2.dhs.org/~john/campy_p...g_bolts400.jpg

Well, I consider myself enlightened. I just knew our panel of experts would recognize this tool. Maybe I should dump this box on the bench and see what else is in there. :)

Aw, nutz!

That's no reason for you to bolt from the conversation, let alone put a hex on it.