Re: chainline. You normally try to center the middle ring on the cogset when you run a triple. so with a 9 speed cassette, you'd line up the middle chainring with cog #5
If your 24/40/chainguard setup is going to be ridden as a 1x9 plus granny (as most people do), then leaving your BB alone is actually precisely the right thing to do. Center that 40 on the #5 cog and all nine are available to you. The only no-no gears are the 2 or 3 small cogs when you are in the small chainring, gears that nobody needs anyway. This is one of the cases where doing it the easy way and doing it the right way might be the same thing! :-) On Monday, January 21, 2013 8:51:28 PM UTC-8, ted wrote: > > I always thought it was odd that small rings were al and big cogs were > steel. Seems like if you don't want al cogs for >25 teeth you would > want steel rings for the small (say <36) rings. Same # of teeth means > same load, same wear, very similar weight. > > On the bb front, converting a triple to a double using the middle and > small rings should mean you need a longer bb to keep the spec chain > line. Not that I bothered about that, but ... > > On Jan 21, 8:29 pm, Garth <garth...@gmail.com> wrote: > > With my Bombadil a 24t ring is as large as I could go with needing a > longer > > BB using a 110mm Tange. And yes .... SS is the only way to go for the > > small rings. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/1qksx-xxjLAJ. To post to this group, send email to rbw-owners-bunch@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.
