Home
Back
Wallace General ET Equation:
| From: | To: |
The Wallace General ET Equation estimates elapsed time (ET) for drag racing vehicles based on weight and horsepower. It provides a theoretical estimation of quarter-mile performance for racing vehicles.
The calculator uses the Wallace equation:
Where:
Explanation: The equation calculates the cube root of the weight-to-power ratio and multiplies it by the constant 5.825 to estimate quarter-mile elapsed time.
Details: ET estimation is crucial for drag racing enthusiasts and professionals to predict vehicle performance, compare different setups, and optimize power-to-weight ratios for better track times.
Tips: Enter vehicle weight in pounds and engine horsepower. Both values must be valid positive numbers. The result represents estimated quarter-mile elapsed time in seconds.
Q1: How accurate is the Wallace ET equation?
A: The equation provides a theoretical estimation. Actual track times may vary based on traction, aerodynamics, driver skill, and other factors.
Q2: What is considered a good ET for drag racing?
A: ET values vary by vehicle class. Generally, sub-12-second times are considered fast for street-legal cars, while professional dragsters can achieve times under 4 seconds.
Q3: Does this equation account for different racing conditions?
A: No, this is a basic theoretical formula that doesn't account for track conditions, weather, altitude, or other variables that affect actual performance.
Q4: Can I use this for any type of vehicle?
A: The equation works best for rear-wheel drive vehicles with good traction. Front-wheel drive and all-wheel drive vehicles may have different performance characteristics.
Q5: How can I improve my ET?
A: Reducing vehicle weight, increasing horsepower, improving traction, and optimizing aerodynamics are the primary ways to improve quarter-mile times.