Originally Posted by
bruce19
I hate these posts. Now I have to actually think. Damn. A couple things that leap to mind. How similar are frame tube angles? And, I usually don't measure seat height from seat to center of bottom bracket. I usually measure seat to pedal spindle. Are all your crank arm lengths the same? I've only set up road bikes but have been pretty successful.
I'm measuring my seat height the same way you do. Three of the four bikes have the same frame geometry but different top tube lenghts. One of the others is 1 degree steeper in the head and seat tube with a top tube 2mm shorter. The other has the same length top tube and 1 degree steeper in head and seat tube. I don't know about fork rake on any of them.
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Favorite rides in the stable: Indy Fab CJ Ti - Colnago MXL - S-Works Roubaix - Habanero Team Issue - Jamis Eclipse carbon/831