How to Calculate Reduction Ratio

Calculate the gear reduction ratio using the number of teeth on each of the two gears
••• moodboard/moodboard/Getty Images

A gear-reduction ratio is calculated directly from the number of teeth on each gear. The number of teeth is a simple value to obtain and that is all you need to complete this computation. After you calculate this ratio, you can use it for any other computation you -- need such as speed or torque.

    Count or obtain the number of teeth on each gear. Calculate the gear reduction ratio by dividing the second gear's number of teeth by the first gear's number.

    Reduce the resulting fraction to make it easier to read. For instance 100/75 becomes 4/3.

    Reduce your calculated ratio further to an X:1 format, which is most commonly used by calculators and equations. For example, a 4/3 ratio becomes 1.33:1.

Related Articles

How to Convert Meters per Second to Miles per Hour
How to Calculate Speed Ratio
How to Calculate Levered Beta
How to Multiply Vectors
How to Write an Equivalent Fraction With a Given Denominator
How to Calculate Rack & Pinion
How to Calculate the Rate of Decay
How to Convert a Fraction to a Ratio
How to Convert RPM to MPH With a Calculator
How to Calculate the Duty Cycle of a Frequency
Rack-and-Pinion: Gear Ratio
How to Convert RPM to Radians
How to Type a Mixed Fraction in a TI-83 Plus
How to Calculate Tons
How to Write a Ratio in Different Ways
How to Calculate Percent Relative Range
How to Convert Hours & Minutes to Decimals
How to Calculate Gear Ratio
How to Calculate Mechanical Leverage
How to Divide Rational Numbers

Dont Go!

We Have More Great Sciencing Articles!