Originally Posted by
dddd
he wider, softer tire some added stability? And doesn't the softer tire have enough damping to it's flexing to help damp out oscillations?
Racing bikes with high handlebars, short stems and flexible frame/fork structure are the recipe-makers for shimmy as I have noticed, that and a weight-bearing rack located above the rear tire.
Thanks dddd- Agree and that's one of the reasons I'm going back to a longer stem on the tandem.
Long story but for other reasons, I'm re-configuring both capt. and stoker set-ups. By luck, super BF member happened to have a unique seat post rail adapter mount so I can reverse set the saddle. He posted in the for sale section and couldn't believe my luck. Cool thing the bb is eccentric and so I can adjust accordingly knee drop line to the new saddle position.
Last part of the ingredients is finding the magic 27" fast gravel / road tire in a vintage looking gumwall.