Originally Posted by Old ABLA Member

I've wanted this for the last 4 decades. We could put a man on the moon with the computing power of a modern smart phone but we can't come up with my desired drive train. Why? Because the industry is not willing to put in the R&D to design and tool this because they know they will be shooting themselves in the financial foot. They don't want a bunch of happy cyclists simply doing what they want to do which is just go for a ride and not have to deal with the grief and expense of the derailleur system.