# Gear Design Equations and Formulas Calculator

## Automobile Car Truck

Inputs:
 gear ratio rotation veloctiy revolution/minute 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

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#### Conversions:

 gear ratio = 0 = 0 rotation veloctiy = 0 = 0 revolution/minute speed = 0 = 0 mile/hour

#### Solution:

 tire radius = 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