Can I safely replace RD without this thingy: (see pic)
I want to replace a Deore with an older XT derailer - so they're a bit dissimilar. I understand that a special tool for aligning the derailer may be needed. The picture below shows that kind of tool. My question is: do I really need it? How much easier will my work be, with it?
Last edited by wroomwroomoops; 10-13-06 at 03:21 AM.