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I have used a non 12 sp chainset with 12sp bits. Don’t bother. It’ll start off fine. It’ll shift nicely, but as your chain and cassette wears, it’ll get sloppier and sloppier and sloppier.
This has nothing to do with chain or chainring width, but rather that Campagnolo moved the chain line ever so slightly outboard when 11sp HO came along. The 12sp cranks will play nicely with this chain line. The 11sp will not.
JB-
Thanks, what I’m suggesting is actually the other way around, I’m offering my spare 12 speed chainset for someone else to use as part of an 11 or 12 speed groupset. From what I have read, a 12 speed chainset works fine with an 11 speed chain and derailleurs. I have another 12 speed chainset to use with the rest of my Chorus group.
Actually I was following your CP thread to help decide how to set up the 12 speed group - it’s for my dad’s all-road / gravel bike. He needs 165mm cranks according to his bike fit and I was trying to work out whether to try a Praxis or Rotor chainset, but decided against that partly thanks to your experience. In the end I got another Campy 12 speed chainset with 165mm cranks, I couldn’t find anywhere to buy a complete groupset with that spec, so now I have 2 Chorus chainsets which is extremely annoying!
DrDave
I have a brand new 12 speed Chorus chainset (170mm, 48/32T) that is surplus to requirements - I bought a complete groupset but will be using a different chainset. From some basic research, I believe it works ok with 11 speed too. I will put an ad up but thought I should post it here as well.
Unlikely I know, it’s a bit of a random one but if anyone is putting together a 12 speed group and would like it for less than RRP, please give me a shout!