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Horsepower Design Equations and Formulas Calculator
Automobile - Car - Truck
Solving for engine horsepower using the ET method.
This method uses the elapsed time needed to complete a quarter mile run. It is used to give an estimate of vehicle(car, truck, motorcycle) engine or motor horsepower. Weight should include the mass of the vehicle, driver and passenger.
Inputs:
Conversions:
| weight | = | 0 | = | 0 | pound | |
| time | = | 0 | = | 0 | second |
Solution:
| horsepower (hp) | = | HAS NOT BEEN CALCULATED |
Other Units:
Select an equation to solve for a different unknown
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Engine horsepower estimate using quarter mile elapsed time Includes plot and graph |
rotating horsepower
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Rotating horsepower |
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Torque |
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Speed - revolutions per minute (rpm) |
estimate engine or motor horse power for cars, trucks and motorcycles
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Estimate of engine horsepower after a quarter mile run using the trap speed method. |
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Determine the increase in engine horsepower when an after market modification, race or performance part has been installed with trap speed. |
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Calculate engine horsepower after a quarter mile run using the ET method. |
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Compute estimated increase in engine horsepower when an after market, racing upgrade or performance part has been installed with ET. |
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Dyno correction factor. Factor corrects horsepower for normally aspirated internal combustion engine to a standard humidity, pressure and temperature after dynamometer measurement. |
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Calculate a vehicles power to weight ratio. Acceleration is related to the ratio. |
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