Originally Posted by
maddmaxx
This restores the ability to use what might be my favorite feature of twist shifters, the ability to drop from the high to low chain ring while simultaneously changing up 3 or 4 gears on the cassette. All done in one pedal rotation. This is the dreaded 0 change shift while moving from the inner front ring to the outer and vice versa. Traditional shifters may choose not to, or be unable to make this change in the same quick motion.
This should not be a problem at all with Campag Ergopower shifters. Also, back in the old days, when the shift levers were on the downtube, I used to use my right thumb to push the left lever forward while using my right index and middle fingers to pull the right lever back (or forward), shifting both derailleurs simultaneously just before climbs. Harder to do this the other way (left lever back, right lever forward) - I'd have to do this in sequence, but I would usually shift the left lever with the right thumb. The old Simplex/Mavic retrofriction levers required such little force that this was easy.
Luis