So I was looking at the Colnago and trying to figure out the gearing.... Every time I rode with my group, I was repeatedtly asking them to check what kind of speed we were holding. From their answers and what I could tell my cadence was, I knew something was not quite right.
I checked the cassette, which I thought was a 11-23 7sp and found it was actually a 13-23 7sp. If you plug those numbers into a gear calculator, the difference is quite large. Also the 13-52 that I was running when spun out is quite a bit short of the 11-50 I was spinning out on my plastic fantastic.
So I started digging in my stash of parts and managed to find a new SRAM 11-23 9sp cassette. This gave me the 11 I was looking for, and gives me a tighter range between ratios. Since I'm putting this on a 8-9-10 cassette body, it fits fine. The shifter just barely has enough cable pull to make it through the entire cassette, but it works.
This thing really needs a 9sp chain, so I'll be trying to lay my hands on one this week and hopefully it will work fine.
So I now have Campagnolo crank, rings, derailleurs and brakes running with Shimano hubs and chain and a SRAM cassette... ShimSramNolo!