How To Compute The Proportional Radius Of A Wheel Or Pinion
Description
This section is from the book "The English And American Mechanic", by B. Frank Van Cleve. Also available from Amazon: The English And American Mechanic.
How To Compute The Proportional Radius Of A Wheel Or Pinion
Rule
Multiply the length of the line of centres by the number of teeth in the wheel for the wheel, and in the pinion for the pinion, and divide by the number of teeth in both the wheel and pinion.
To Compute the Diameter of a Pinion, when the Diameter of the Wheel and Number of Teeth in the Wheel and Pinion are given.
Rule
Multiply the diameter of the wheel by the number of teeth in the pinion, and divide the product by the number of teeth in the wheel.
Example
The diameter of a wheel is 25 inches, the number of its teeth 210, and the number of teeth in the pinion 30; what is the diameter of the pinion?
25 X 30 / 210 = 3.57 inches.
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