Don't you just hate it when your bike ghost shifts. I have silver dt shifters on my rambouillet and it never ghost shifts and never needs adjustment. I have silver bar ends on my Ebisu All Purpose and if I don't retighten the D ring once a day it is sure to ghost shift on the first hill. I have been over the shifters and whole system with a magnifying glass and have yet to find the cause.
Michael On Apr 5, 7:38 am, Steve Palincsar <palin...@his.com> wrote: > On Sat, 2009-04-04 at 16:57 -0700, Crank wrote: > > I have an Atlantis 61cm that has ghost shifted on me continuosly until > > I modified my cassette. I went from a Shimano 9 speed to an IRD 8 > > speed, but kept the 9 speed chain. Wide gap in cassette, narrow chain > > gives me lots of room to friction shift. What you may be experiencing > > is frame flex, that stretches the cable and creates a shift. > > Odds on that are very small, unless the frame in question is something > like an aluminum Alan. If the frame is any kind of Rivendell (I no > longer recall) it's just flat out impossible. > > There are many things that can cause ghost shifting, especially when you > friction-shift hyperglide cassettes. Occasionally it's the shift lever > -- you have to really crank down HARD on the D rings with Silver > shifters, far more so than would be conceivable with ordinary friction > downtube shifters -- to keep them from slipping. But far more often > it's the basic nature of the cassette itself: it wants to shift, it's > designed to make that very easy, and if the chain isn't perfectly > aligned (indexing can do, but it's very hard to do with a friction shift > because you get no clues that alignment isn't precisely, exactly > perfect) it'll shift under load. > > Widening the gap between sprockets makes accurate friction shifting > considerably easier. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
