Difference between revisions of "Lucien Juy"
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Latest revision as of 09:07, 22 May 2020
Lucien Charles Hippolyte Juy was a French industrialist who made derailleur gears. He is credited with making the first derailleur with a collapsible parallelogram. A hinged frame swung in and out from the frame and fed the chain to one of a number of sprockets attached to the hub. [1]
Juy's derailleurs, sold as Simplex derailleurs, often on Peugeot models were novel in having a jockey wheel to correct the tension of the chain as it moved across differently sized sprockets. [2].
See Also
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