Originally Posted by
Camilo
I've though for years that a marketable system would not be totally automatic, but use existing electronic shifting technology, but have a single control for front and back derailleurs. So a rider could have the broad range of a dual-derailleur system (as opposed to a 1X system) but not have to mess with front and back shifting, when to shift front vs. back, and when to double shift, etc. The central "brain" would know which combination of gears are the next step either up or down.
Any modern electronic shifter could do this with no problem. In fact some already do this to an extent. When you shift the front derailleur on many of those setups, it automatically shifts the rear derailleur to compensate. It'd be very easy to just modify the program to use simpy two buttons instead of four.