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Campy crankset question....(3 posts)

Campy crankset question....tronracer
May 7, 2003 4:46 PM
I bought a used crankset...well gruppo. Anyway, the chainrings are bent...probably the moron used a mallet to get the crankset off instead of a crankarm puller. So now, I'm getting a new crankset because I figure for $70 and & $50 for new chainrings, I might as well get the right size crank arms for me and sell the old crankset on eBay (minus the bent chainrings of course).

Anyway, Record 9 is hard to come by these days and a salesman told me there is no difference between 10 speed and 9 speed? Is he trying to make a sale or what?
No difference between 9 & 10 just the ...Live Steam
May 7, 2003 5:12 PM
printing on the rings. The same goes for the front der. The only difference is a little piece of plastic that can be added to the 9 speed der. To be honest you can probably use the entire drive train from 9 for ten except the cogs.
re: Campy crankset question....DMoore
May 7, 2003 6:48 PM
Not much difference, but it's more than printing. The crank arms are identical. The inner chainring is identical. The outer chainring for 10 speed is slightly less that 1 mm (IIRC) thinner. This permits the 10 speed outer ring to sit slightly closer to the inner ring and prevent the narrow 10 speed chain from dropping into the space between the two rings.

Buy a 9 speed crankset, replace the outer ring with a 10 speed outer ring, and voila! you have a 10 speed crankset. Conversely, buy a 10 speed crankset, replace the outer ring with a 9 spd ring, and you have a 9 speed crankset.