Recently I replaced the front derailleur cable on my 2004 cannondale road tandem (ulterga STI levers, shimano 105 fd) . Now when I wish to down shift from the big ring to the middle ring, I have a lot of resistance. Because of the resistanceI have to use a lot of force to down shift. This results in me skipping the second ring and dropping down to the smallest one. I then have to up shift. Of course, all this makes my stoker very unhappy!
It has something to do with cable tension. If I disconnect the cable from the front derailleur and just pull slightly, the ulterga shifter has no resistance and shifts normally. I tried to use a slacker cable, but this causes other problems in shifting.
Any help would be greatly appreciated. I have not had much luck using the normal cannondale e-mail address…funny as I own several of their bikes.
Debica Poland via Spokane Washington