After a bit of research (I nearly bought one once, and had a picture of the frame still), I think the Colnago is a Conic SLX frame. That had crimped tubing which, in profile, is shaped like the clover leaf logo. It's meant to stiffen the frame.
@andyp started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
After a bit of research (I nearly bought one once, and had a picture of the frame still), I think the Colnago is a Conic SLX frame. That had crimped tubing which, in profile, is shaped like the clover leaf logo. It's meant to stiffen the frame.