Flat Belt Pulley

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Flat belt pulley. It measures 25.643 mm dia with a 7.938 mm width. In O scale this is a 48-1/2″ x 15″ pulley. The rim has the correct crown for this size pulley. The shaft hole is 1.588 mm/0.0625″ dia. The pulley was designed using data from “A treatise on belts and pulleys” by John Howard Cromwell pub. 1888

Here I have a couple mounted using custom (cast plaster) supports. There is another laying half-covered by dirt and rubble .. managed to ruin that one by leaving in cleaner to long .. makes for great scrap though.

 

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