12 speed Campagnolo Chainrings on 10 Speed Veloce Crankset?

[zacstanley]

Anyone know offhand if the BCD on these silver crank arms are compatible with 12 speed chain rings? I have shifters and mechs but would like to keep the existing arms if possible. Thanks.

Below is the model:

https://chatnation494.wordpress.com/...peed-chainset/

[herb5998]

Late 11s and all 12s utilize a 4 bolt setup, so a 5 bolt crank will not work.

[zacstanley]

Thanks! I presume I can use a later speed, then?

[dddd]

I have many times used older cranksets with later (narrower) chains, after simply applying a bevel to the inside of the chainring's teeth.

The bevel moves the tips of the teeth closer to the big ring, effecting narrower spacing where it counts.

[dddd]

Here, I broke all the rules by first fitting a complete 10s cassette onto an unmodified 7s freehub, then beveled the inner ring to work perfectly with 10s chain.
I've been using this build for over two years now with nary a hiccup:

[Mark McM]

Not only are there no 12spd chainrings to fit a Veloce crankset, there aren't any 11spd chainrings that fit, either. Veloce (plus Mirage and Centaur) "hidden 5th bolt" cranks used stamped chainrings, which are thinner than the machined chainrings on Athena, Chorus, Record and Super Record hidden 5th bolt cranks. Due to the hidden 5th bolt design, these cranks must use chainrings of of a specific width. Although Campagnolo made the thicker machined hidden 5th bolt chainrings in 11spd versions, they never made the thinner stamped hidden 5th bolt chainrings in 11spd - the stamped hidden 5th bolt chainrings stopped at 10spd.

[DfCas]

Im using an FSA 10-11 crank and rings on a 12 speed Chorus setup. Works flawlessly. Have you tried yet?

[zacstanley]

Originally Posted by DfCas

Im using an FSA 10-11 crank and rings on a 12 speed Chorus setup. Works flawlessly. Have you tried yet?

Can you point me to the crank?

[DfCas]

I'm not sure I can provide a link. I'm using a Gossamer triple as a sub compact double. I've used a 28 and 30 tooth inner, and a 42 and 46 in the middle position. 3 years noiw.