It finally stopped raining so I was able to sort out the shifting on Project Cannondale. After an hour of frustration trying to get the oh-so-sexy, black Tiagra RD I scored on Ebay to "SHIFT RIGHT, DAMMIT!," I learned that Shimano, in their infinite wisdom, made the actuation ration of 10-speed Tiagra the same as their 11-speeds (1.4:1) instead of 1.7:1 like all their other 10-speed groups that would work with the 9-speed 105 brifters I had. For the life of me, I can't figure out why they would waste the effort making do that instead of just making Tiagra 11-speed, but I guess that's why I am not rich. A not-so-sexy Sora GS RD was scrounged up and worked with the 32T cog (with the B tension adjustment maxed out). A few more bits when finances allow and I will be able to actually road test it!
