My Ultegra STI shifter for the front derailleur is slow to shift up to the big ring (double, not triple) requiring a lot of cranking: One or two big cranks, hold halfway, then another crank. Then, once it's on the big ring, it won't shift down. I can usually fix this by grabbing the wire next to the down tube and yanking while I try to shift. This rather defeats the purpose of STI!
I replaced the cable, lubed everything, re-did the set up several times (taking the tension off the cable by releasing it from the lock screw on the derailleur, backed the set screws all the way off, then re-tensioned the whole thing).
Beyond replacing the cable, I haven't messed with the shifter itself. All the magazines suggest avoiding these fussy mechanism with its 100 parts. But I'm willing to try.
All ideas welcomed. Thanks.
Van
I replaced the cable, lubed everything, re-did the set up several times (taking the tension off the cable by releasing it from the lock screw on the derailleur, backed the set screws all the way off, then re-tensioned the whole thing).
Beyond replacing the cable, I haven't messed with the shifter itself. All the magazines suggest avoiding these fussy mechanism with its 100 parts. But I'm willing to try.
All ideas welcomed. Thanks.
Van