Odd C-Record chainring
 

This may have been more appropriate elsewhere, but I figure the people who will have the answer frequent this group. I bought what is represented as a C-Record 52T chainring. If I put it next to one I am certain is a C-Record, it has all the characteristics save one. The chainstop (the small metal stub that keeps the chain from wedging between the ring and the arm on an overshift) is not in line with one of the mounting holes. In other words it is in the wrong position and there is no way to move it where it should be located.

Any ideas what happened here? Is this not a C-Record ring? No real biggie if it is not...it was cheap and I got a nice 42 with it.

The chainstop should line up with the right crank. Campagnolo has used two different Record spider designs: the older familiar 5-arm layout, with the crank halfway between two bolts, and the current one, in which the crank itself IS the fifth arm of the spider. You have one ring representing each of these two applications.

Based on the mentioned pin placement the top ring is not C Record. Maybe Croce D'Aune, Chorus or Athena.

Really? I just looked through all the Campy catalogs from 1984 to 2006. All Record cranks had the fifth bolt (and pin) behind the arm.

+1! What John E said. The top ring is Super Record and the bottom one could be C-Record
or Croce Duan (sp) or Athena.

I have several Super Record cranks and the pin is behind the arm, but the chainring bolts are not. And I know for sure that at least one set is an '84.

+3 ......

No more to add

Well, after looking at my catalogs, I think I have some answers for my question.


The bottom ring is C-Record. The top ring is not Super Record. SR is 144BCD, this one is 135BCD. The ring in question (the top one) does fit the C-Record crank I have. Looking at one of my Campy catalogs, I see now that the ring in question is probably Croce or Athena, as concluded by John E. Even though I cannot use the ring, I still got a 42 that I can use out of the deal. Hey Marty...want a 52 for your Croce on your Reus?

Record, aka Corsa Record started the Record design element with the crankarm locating one chainring bolt. "CdR" and or Chorus put the arm between the chainring bolts.

I do not recall seeing any Corsa Record rings with the "shift pins" around the perimeter of the ring, I think that started with the advent of Ergo, No?

With the exception of C-Record Pista, which is of no matter in this case, as the ring in question is a road ring.

-Kurt

I'll back you up 1000% on that. Never was there an SR ring in existence that looked like that, and save for a few Sugino rings, I've never seen that design in 144bcd either.

-Kurt

I guess my ignorance of post mid-80s Campy is being shown. The crank I have which I have been calling C-Record is in fact Record from around 1991. How do I now know this? It was identified to me by its seller as Century finish. So repechage is correct in saying the ring is not C-record. He is also correct in pointing out the shift pins as showing up later. So what I have probably is a Record crank from around 1991 with rings from a later year. I generically lump the later Campy Record as C-Record. My bad on that.

For the most part the original C-Record design for the crank arms, front derailleur, front hub and seatpost last from 1984 to 1994 so I would say you are safe saying your 1991 cranks are C-Record.