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Devise a gear train with a train value of -900:1. Specify the number of the teeth in each gear. From interference criteria, no gear should

Devise a gear train with a train value of -900:1. Specify the number of the teeth in each gear. From interference criteria, no gear should have fewer than 17 teeth. Due to size restrictions, no gear should be larger than 75 teeth. Also sketch the concept of the train.

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