I have done two (2) CX races this past fall, with travel and family stuff preventing more. So my experience is limited, but I have big plans.
I noticed that I never went to the big ring on my bike - I have a 46/36 double, and a 12/28 on the back. Rode both races entirely in the small ring. Probably could have done it in the big ring, since my bike doesn't mind cross-chaining big/big.
I commute on my cross bike, and am wanting to put together (if cheaper than buying new) a bike for racing. I am wondering if a single ring on the front would be a good approach, particularly since I can even go to 12/30 with a Tiagra cassette (have no familiarity with SRAM or Campy, so cannot talk to those).
Does this make sense? With a 46 or thereabouts on the front, and the wide range on the back, it seems I would have everything I would need. And I might actually have fewer chain drops when I do my magic on the course (found that one can bounce the bike hard enough to drop the chain, or at least I apparently can). And I like the mechanical simplicity.
What do you folks think? Does this make any sense?