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Quarter Mile ET Formula:
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The Quarter Mile ET (Elapsed Time) formula calculates the time it takes for a vehicle to complete a 1/8 mile drag race based on its weight and horsepower. This formula provides a theoretical estimation of drag racing performance.
The calculator uses the drag racing ET formula:
Where:
Explanation: The formula demonstrates the cubic relationship between power-to-weight ratio and elapsed time, where better power-to-weight ratios result in faster times.
Details: Accurate ET estimation is crucial for drag racing enthusiasts, automotive engineers, and performance tuners to predict vehicle performance and optimize power-to-weight ratios.
Tips: Enter vehicle weight in pounds and engine horsepower. Both values must be positive numbers. The calculator will provide the estimated 1/8 mile elapsed time in seconds.
Q1: How accurate is this formula?
A: This formula provides a theoretical estimation. Actual ET can vary based on traction, aerodynamics, transmission efficiency, and driver skill.
Q2: What is a good ET for 1/8 mile?
A: Professional drag cars can achieve 4-5 seconds, while street cars typically range from 6-10 seconds depending on performance level.
Q3: Does this work for electric vehicles?
A: Yes, but electric vehicles may have different power delivery characteristics that could affect actual performance compared to the calculation.
Q4: What factors affect actual ET besides weight and HP?
A: Traction, gearing, aerodynamics, tire compound, weather conditions, and launch technique all significantly impact actual elapsed times.
Q5: Can I use this for 1/4 mile calculations?
A: This specific formula is calibrated for 1/8 mile. For 1/4 mile, different constants and considerations apply.