Originally Posted by
thook
Together we stand....lol!!
Yeah, I do know that's the responsible thing to tell "no..don't". Again, I was just surprised to find pro's were actually doing it. Question is, does a short cage really even shift different enough to justify using one instead? I wouldn't know since I've never actually used one on any of my bikes
I think the reasoning is that short-cage RDs are often also designed for smaller cassette cogs, so you would get a smaller
chain gap with a given cassette than a "mountain" RD that is rated for larger cogs. That should shift a little better, but you can do a lot with the B-screw adjustment on the longer-cage model. And since you're considering a 26-30T big cog anyway, I don't think a long-cage RD would be so bad at shifting. (If you wanted to do a triple plus a
corncob, then I'd probably try to make a "road" RD work.)
