I have not been able to find a definitive answer on this. If there is an answer online I missed, please point it out to me.
I have a 7800 DA Group that I love but I want to use a compact crankset. I am considering using the Ultegra 6750 Crankset. Will my 7800 group work with the Ultegra crankset?
This chart would have me believe the 7800 derailleur will not function with the crankset.