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1/4 Mile ET Equation:
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The 1/4 Mile ET (Elapsed Time) equation estimates the time it takes for a vehicle to complete a quarter-mile drag race based on its weight and horsepower. This formula provides a theoretical estimation of drag racing performance.
The calculator uses the 1/4 Mile ET equation:
Where:
Explanation: The equation demonstrates the cubic relationship between power-to-weight ratio and elapsed time, showing how small changes in either weight or horsepower can significantly affect quarter-mile performance.
Details: Accurate ET estimation is crucial for drag racing enthusiasts, automotive engineers, and performance tuners to predict vehicle performance, compare different setups, and optimize power-to-weight ratios for competitive racing.
Tips: Enter vehicle weight in pounds and horsepower. Both values must be positive numbers. The calculator provides a theoretical estimation - actual performance may vary based on traction, aerodynamics, and drivetrain efficiency.
Q1: How accurate is this formula?
A: This formula provides a good theoretical estimation but actual times may vary due to factors like traction, aerodynamics, transmission type, and launch technique.
Q2: What are typical 1/4 mile times for different vehicles?
A: Production cars range from 11-16 seconds, supercars 9-11 seconds, and professional drag cars can run under 7 seconds. The world record is around 3.5 seconds.
Q3: Does this account for driver weight?
A: No, this calculation uses vehicle weight only. For more accurate results, include driver and passenger weight in the total weight calculation.
Q4: What other factors affect quarter-mile times?
A: Traction, aerodynamics, transmission type, tire compound, weather conditions, altitude, and driving skill all significantly impact actual performance.
Q5: Can this be used for motorcycles?
A: While the basic principle applies, motorcycles have different power delivery and traction characteristics, so results may be less accurate for two-wheeled vehicles.