# Gear Design Equations and Formulas Calculator

## Automobile Car Truck

Solving For Rotation Velocity

Inputs:
 tire radius meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard speed meter/second centimeter/hour centimeter/second foot/day foot/second inch/hour inch/second kilometer/hour kilometer/second knot mach sea level 15 C meter/day mile/hour mile/second millimeter/second speed of light in vacuum yard/second gear ratio

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#### Conversions:

 tire radius = 0 = 0 inch speed = 0 = 0 mile/hour gear ratio = 0 = 0

#### Solution:

 rotation velocity = HAS NOT BEEN CALCULATED

#### Other Units:

Change Equation
Select an equation to solve for a different unknown

 speed rotation velocity gear ratio tire size - radius effective gear ratio tire size - diameter crawl ratio

Where
 speed = MPH - miles per hour tire radius, tire diameter, rim diameter = inches gear ratio = if ring and pinion ratio is 4.10:1 use 4.10 rotation velocity = RPM - revolutions per minute effective gear ratio = determine new gear ratio after a tire size change crawl ratio = four wheel drive rear axle differential, transfer case low range and transmission ratios section width = millimeters aspect ratio = unitless

References - Books:

See 3 and 4 on reference page

by Jimmy Raymond

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