Originally Posted by
PeteHski
I believe there are several patents on various elements of both SRAM and Shimano systems. I read that SRAM have a patent on their wireless comms protocol, which might explain why Shimano still has some wires, but it’s not clear if this is the reason. What I find hard to believe is that Shimano freely chose to make a wired solution in the world of modern electronics. At least now the shifters are wireless, so that’s an improvement.
Agree, although my bicycle is not set up for disc brakes and it seems Shimano is not supporting wireless Di2 with rim brakes, only wired. I know the rim brakes are soon to be considered obsolete, but it seems foolish to buy a new bike just so I can use disc brakes and wireless shifting, when the current bike is fine.