I was thinking that the factor is the weight of the rear bag, not the rack. Can you verify if without the rack but with the bag anything changes?
My Atlantis with the same rack-bag combo + Noodle bars and shimmies. When I put the Albatross bars it didn't shimmy but I couldn't get used to them. Now I'm putting the Noodles back on and will see what happens. Running 50mm Marathon Supremes. Rene Sent from my iPhone 4 On Dec 21, 2010, at 3:27 PM, Michael_S <[email protected]> wrote: > I was thinking another variable may be wheels. Have you tried swapping > wheels from another bike to see if that changes or helps anything? Or > tire switching as well? > both seem like easy changes to make. Rotating components can certainly > affect the dynamic response of the bike. > > Other things like frame alignment, new headsets and such are more > costly to do. > > Keep trying.. > ~Mike~ > > > > On Dec 21, 2:37 pm, Steve Palincsar <[email protected]> wrote: >> On Tue, 2010-12-21 at 14:29 -0800, William wrote: >>> Nobody conclusively says that such things are >>> causes or enablers of shimmy, or will bet their life on removing such >>> loads being a cure to shimmy >> >> They'd be very foolish to do so, since there are many things that can >> cause shimmy including rider behavior. >> >>> Another near-term experiment will be to load the same Saddlesack large >>> to a much stiffer rear rack. The Hillborne now has the rack that came >>> with my Burley Piccolo. It's a beast. Fat cro-mo tubes welded, >>> bomber. If the shimmy comes from rear load floppiness, and if the >>> critical flopiness comes from the rack, then that Burley rack should >>> change the shimmy properties substantially. If the critical flopiness >>> comes from the Saddlesack large, then the rack won't change >>> anything. >> >> I hope you solve your problem, but when you've done it you still won't >> be able to make any kind of sweeping, definitive statement about what >> causes and what cures shimmy. At most you'll be able to say "I did this >> to cure mine." > > -- > 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. > -- 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.
