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Quarter Mile Elapsed Time Equation:
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The Quarter Mile Elapsed Time equation estimates the time it takes for a vehicle to complete a quarter mile (402 meters) drag race based on weight and horsepower. This formula provides a theoretical estimation of drag racing performance.
The calculator uses the quarter mile equation:
Where:
Explanation: The equation calculates the cube root of the weight-to-power ratio multiplied by a constant factor of 5.825 to estimate 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.
Tips: Enter vehicle weight in pounds and horsepower. Both values must be positive numbers. The calculator provides a theoretical ET that can be used for performance comparisons and tuning decisions.
Q1: How accurate is this equation?
A: This provides a theoretical estimation. Actual ET can vary based on traction, aerodynamics, transmission, driver skill, and track conditions.
Q2: What is considered a good quarter mile time?
A: Professional drag cars run under 7 seconds, street-legal supercars 9-11 seconds, average sports cars 12-14 seconds, and regular cars 15+ seconds.
Q3: Does this account for driver weight?
A: No, the weight should include the vehicle plus driver and any additional cargo for most accurate results.
Q4: What factors affect actual quarter mile times?
A: Traction, launch technique, shifting speed, aerodynamics, temperature, altitude, and track surface all significantly impact actual performance.
Q5: Can I use this for different racing distances?
A: This equation is specifically calibrated for quarter mile distance. Different equations exist for eighth mile and other racing distances.