It depends on total capacity. If he's running a 46-30 in front and a 12-36 in back, that's 40 teeth of total capacity. Shimano rear derailleur models that come in different cage sizes all will take the same max cog. The longer cage just gives you more capacity. Sheldon Brown (RIP) has a nice article about it. For example, my Hillborne has an 11-32 in back and a 22-34-46 in front, for a total of 45 teeth of capacity, which is right up to the max of what Shimano claims for the long cage, so I use the long cage. On my Hunqapillar, I plan on using a 29/44 in front and a 12-36 in back, which is 39 teeth of capacity. I'm going to try that with the shorter cage XT. I'm expecting it to work.
On Jul 11, 4:06 pm, Steve Palincsar <palin...@his.com> wrote: > On Sun, 2010-07-11 at 15:46 -0700, William wrote: > > > I don't think you need a long cage rear der if you are really running > > a compact double. > > Doesn't that depend on the cassette you're using? -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
