After the implosion of my rear mech at the weekend, I'm in the market for a new one, but not sure what length to get. I'm thinking either long or medium cage XT or a short cage ZEE.
Trouble is, I'm not sure how short a cage I can get away with.
I have 26/38 up front and 11-34 in the cassette. I would use all of the cassette in the 38 ring and probably the 5 largest in the cassette with the 26 ring.
Basically, is there a any way of telling what I can get away with without trying a short cage out? I've always just had long cage in the past.