I appreciate the input. I grew up in the era of Schwinn Roadmasters, so this stuff about Q-factors, chainstay splay & spindle length represents a new learning curve; still more climbing ahead.
Thank You, Jim Sent from my I-Phone On Sep 21, 2009, at 9:53, Steve Palincsar <[email protected]> wrote: > > On Mon, 2009-09-21 at 07:25 -0600, PATRICK MOORE wrote: >> >> >> On Mon, Sep 21, 2009 at 2:22 AM, Jim Thill - Hiawatha Cyclery >> <[email protected]> wrote: >> >> Wouldn't be my first choice with an Atlantis. As Patrick said, >> you can >> probably make it work with a really long BB, but then the >> chainline >> will likely not be optimal, and whatever narrow Q-factor you >> may have >> hoped for would be thrown out the window. >> >> >> Why would chainline and Q be affected? > > You need that long spindle in order to get the arms far enough out to > not hit the chainstays. That increases tread. Since the TA Pro V Bis > arms do not splay out as do the cranks for which the Atlantis was > designbed, the long spindle moves chain rings far out which then > affects > chain line. > > >> The only downside I see is the need for a hard to get spindle, but, >> get that spindle and the rings ought to be where they need to be, > > If they are where they need to be with a normal length spindle, how > could increasing the spindle length not move the rings farther > outboard > than they need to be? > >> and the Q ought to be fine since Q is determined far more by arm >> angle than by spindle length. > > In this case, Q factor is dsetermined by the need to not hit the > splayed-out Atlantis chain stays. > > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
