Here's a good resource for academically evaluating gearing changes on bikes (including our beloved 8gs.) Site will accommodate customizations including 18" rear. Units default to kmh so set mph if that is your local.
As many have pointed out counter sprocket is a quick and easy change - cheap too. So, run the 15 with TKC's and 17 with Anakees for best of all possible worlds.
There is a pleasure in the pathed woods, There is a rapture in the smoking pipe, There is chaos, where none intrudes, in the deep dell, with its thrills roar; I love not nature less, but bikes the more. Byron riding.
All pics < 6/30/12 deleted by Apple
Now with SmugMug supporting ADV
Sutherngintelmen screwed with this post 01-14-2011 at 07:15 AM