Originally Posted by
13ollocks
I don’t see what difference it would make whether you trim the FD manually or the system does it automatically, as long as the front has trim capability. If the chain rubs the FD, you trim - what does the rear shifting care how it’s done?
unless the DI2 system baulks at the absence of an FD - they’re connected, after all 🤔
Not very likely for DI2 to be scared of a missing FD: There is a 1x12 version out there.