Tandem Roller. Monday , June 04th , 2018 - 15:12:22 PM
A double reduction gear comprises two pairs of gears as single reductions in series. 3 In the diagram the red and blue gears give the first stage of reduction and the orange and green gears give the second stage of reduction. The total reduction is the product of the first stage of reduction and the second stage of reduction.
At this ratio it means the drive gear must make 1.62 revolutions to turn the driven gear once. It also means that for every one revolution of the driver the driven gear has made 1/1.62 or 0.62 revolutions. Essentially the larger gear turns slower.
In a sequence of gears chained together the ratio depends only on the number of teeth on the first and last gear. The intermediate gears regardless of their size do not alter the overall gear ratio of the chain. However the addition of each intermediate gear reverses the direction of rotation of the final gear.
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