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Bellcrank
From WikiPedalia
A linkage in the form of a right-angled lever, with the pivot at the corner. Shimano 3-speed hubs (and some Sturmey-Archer 5-speeds) use a bellcrank to translate a pull on the gear cable into a push on a loose-fitting pushrod that fits into the axle.
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| A bellcrank used to shift a Sturmey-Archer 5-speed hub. |
Sheldon Brown points out a bellcrank that rings a bell, Chevreuse, France, July, 1989. Photo by John Allen |
