Have to admit that it is not for the Tandem- But I need lower gearing on my road bike for Mountains. Currently running Ultegra compact 50/34 and 12/27. This just does not quite give me the gearing for the severe hills I want to climb and my only other choice is to go triple- which would cost more.
Have any of you tried the IRD 10 spd 11/34 cassette? and what are your views on it? Does it change crisply enough and what about wear?
I do have an MTB XT rear derailler to cope with the extra gears.