I'm building a bike, and need to order a Shimano 10-speed rear derailleur (already have Shimano 10-spd shifters). Front is a triple 24/32/42; rear is an 11-36 cassette.
Can I use a GS mid-length rear derailleur on this? Or do I absolutely have to use the SGS long-cage?
I like the crisper shifting of shorter-cage rear derailleurs, and don't cross-chain.