Originally Posted by
Marcus_Ti
Di2 synchro shift is pretty darn close...probably with a firmware update it can be as fast simultaneously shifting as Campag mech is. Shimano intentionally slowed the synchro shifting down relative to multi or single shifts it seems.
Not that I have interest in battery-powered shifting but is there a way with Synchro shift to force an early chainring shift so that it happens at the bottom of the hill rather than in the middle?