Originally Posted by
Blue Belly
hardly arguing against myself, once you understand what I'm getting at. One shifter running 2 deraileurs. With 11 rear & 2 front you could have it choosing when to change the front deraileur for the best ramp up in gears. No need for debating when to switch to the big/small ring(no forgetting either!!!). It will have already figured that out for you. Less thought, better gearing.
I understand what you're saying but I don't think it would be popular with experienced cyclists. We want to independently control the front and rear, not move mathematically through the exact gear progression to the very next gear ratio. I don't want a front ring shift if I'm out of the saddle and what you proposed might try to give me one.
It might be popular with Triathletes though.