On my new bike I'd like to get some really low gears for easy spinning up hills when I've got so much distance in my legs that grinding is not an option.
My current plan is a FSA 46/30 chainset, with a 14-34 rear cassette. But I'd really like even lower. Thing is Shimano don't seem to do any cassettes between 34 and 40, at least in 11 speed, that I can find. I have a Wolf tooth components road link, so I can move the derailure out a bit to fit round the 40t dinner plate. But I then run into issues with derailure capacity. I'm looking at the Shimano RX805 dereilure, that has a capacity of 39t. But, (46-30)+(40-14) is 42.
What happens if you go over the capacity of a derailure?
J