Can the Ultegra Di2 Climbers switch be used without the STI Levers? I know that with DA it was reliant on the STI Levers.
I was hoping to build up a super light flat bar road bike with Ultegra di2.
If there is simple tuning that needs to be done, I will do it. However, I am not very experienced with wiring and I wont be able to do anything too advanced. Also definitely not gonna get DA, even if that is easier to set up in this fashion. \
I have read on a few sites, and many have said that the ultegra climbers switch cannot be used on its own, these sites also listed the switch as not compatible with Ultegra. I have also read that the brain of the ultegra di2 is in the front derailleur, which makes me think that it should be able to work.
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