Turbo Action Technical Tip #5
September 2001
"Handy Formulas"
MPH
= RPM x Tire Dia. (Inches) x 0.0029734
Gear Ratio
RPM =
MPH
x Gear Ratio x 336.306
Tire Dia. (Inches)
Gear Ratio =
RPM
x Tire Dia. (Inches) x 0.0029734
MPH
Tire Dia. (Inches) =
MPH
x Gear Ratio x 336.306
RPM
8" Converter Slippage Approximately 6-11%
English to Metric Conversion
| 1 millimeter = 0.03937 inches | 1 inch = 25.4 mm |
| 1 centimeter = 0.3937 inches | 1 inch = 2.54 cm |
| 1 meter = 39.37 inches | 1 foot = 304.8 mm |
| 1 meter = 3.2808 feet | 1 foot = .3048 meter |
| 1 kilometer = 0.6214 mile | 1 mile = 1.609 kilometers |
| cubic cm = cubic in. x 16.3872 | cubic inch = cm x .06102 |
| 1 gallon of oil = 7.0 lbs | 1 quart of oil = 1.75 lbs |
| 1 gallon of water = 8.4 lbs | 1 quart of water = 2.10 lbs |
| 1 gallon of gasoline = 6.2 lbs | 1 quart of gasoline = 1.55 lbs |