Originally Posted by
bonechiller
The hardest part is going to be the spacing. Modern STI stuff (everything eight-speed and on) uses 130 spacing. It's not a big deal with steel road bike, because you just spread the rear triangle apart and insert your 130mm hub, but with aluminum (as your Cannondale is), you're stuck with the 126 spacing. Some people say you can cold-set aluminum, but I've never seen it done. What I have seen is bikes destroyed in the rear triangle from fairly minor crashes or from being slightly bent during shipping. I know that my shop won't reset aluminum, but you might find someone more skilled who can.
Yeah, I figured that would be the biggest problem. But since 7 speed hub spacing was still 126mm, wouldn't it be possible to rig up some 7 speed Sora or RSX STIs? It's probably not worth it from a financial standpoint, but I'm just curious.