3rd Grade Dropout
Join Date: Oct 2005
Location: Santa Barbara Calif.
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The Chainstay Bridge
So, I am putting the wood to an early 1980's Faggin (56cm-Campy Super Record) this morning on the way to work, and get a gnarly shudder on every stand-up downstroke.
Whaa? The entire back end is washing out, enough to engage the Modolo (mini red construction brick compound) brake pads.
looking down, I can detect the absence of a chainstay bridge, or gusseting to any degree rear of the bottom bracket. This might not be the total cause, but it is something to consider when building framesets.
My current build is using a Nova BB with the round chainstays and the little cast in joining web. I was considering whether or not to install a chainstay bridge. Not any more.
Something to consider, even though the bridge is typically very close to the BB, it really adds to the rigidity and takes a tremendous amount of strain away from the chainstay union, I don't know the percentage, but I suspect that it is considerable.