On Sat, Jan 31, 2009 at 10:04 PM, Doug Peterson <dougpn...@cox.net> wrote:
> We had a thread a few days ago regarding correct BB length for an > Atlantis. Riv's website says 107. Mine came with a 115. Standard build of > Sugino XD crank w/24/36/46 rings, & 8 speed. There were several opinions > regarding the real correct length, but it got me to thinking & checking > (always a dangerous combo!). Anyway, as near as I can measure, it looks > like rear chainline is around 44-45 mm & the front around 50. 5 mm seems a > lot of difference. OTH, if Riv says 107 for the BB, that would get the > front & rear nearly the same. It's close between the 24 granny & stay, but > there's 5-6 mm clearance now. > > How critical is a straight chainline? Affect on front shifting? > It's not critical, just important. 1/4 inch isn't a huge amount, given that a chain on an 8 speed cassette can be deflected almost an inch. In my ignorant days, before "chainline" was even a mental conception, I put many miles on home builds with chainlines hugely off, and didn't notice anything (well, except that the chain would tend to derail when you backpedaled; it worked fine going forward) until someone more knowledgeable pointed the problem out to me. Still, there is that nagging, annoying, inner perfectionist who keeps urging one to get it "just right" ... --~--~---------~--~----~------------~-------~--~----~ 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-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 -~----------~----~----~----~------~----~------~--~---
