WOW. That is the first time I have heard of AXS shifters working on 11 speed etap. Did you have to do any custom programming for it?
I have an etap 11 speed kit on another bike that I could repurpose to the tandem, but that means new wheels, cranks, etc etc...which is a possible winter project...
Originally Posted by
DubT
I just upgraded our Calfee 1 X 10 E-Tandem to SRAM etap 1 X 11. The current rear wheel freehub was compatible with both 10 and 11 speed cassettes. I did not want to have to upgrade to 12 speed AXS. I contacted SRAM and they still offer an 11 speed RED rear derailleur that with the use of AXS shifters or the AXS Blip Box will function properly. I have the RED 11 speed rear derailleur, the AXS Blip Box and Blip Buttons. The system works great!