Home
Back
Wallace Racing 1/8 Mile Equation:
| From: | To: |
The Wallace Racing 1/8 Mile Equation estimates the elapsed time (ET) for a vehicle to complete a 1/8 mile drag race based on the vehicle's weight and horsepower. It provides a quick estimation of performance potential for drag racing enthusiasts.
The calculator uses the Wallace Racing 1/8 mile equation:
Where:
Explanation: The equation calculates the cube root of the weight-to-power ratio and multiplies it by the constant 4.69 to estimate the 1/8 mile elapsed time.
Details: Accurate 1/8 mile time estimation is crucial for drag racing preparation, performance tuning, and comparing vehicle potential. It helps racers set realistic expectations and make informed modifications.
Tips: Enter vehicle weight in pounds and horsepower. Both values must be valid (weight > 0, horsepower > 0). The result provides an estimated 1/8 mile elapsed time in seconds.
Q1: How accurate is the Wallace Racing 1/8 mile equation?
A: The equation provides a reasonable estimation for most vehicles, but actual performance may vary based on traction, aerodynamics, driver skill, and other factors.
Q2: What is considered a good 1/8 mile time?
A: Good times vary by vehicle type and class. Generally, times under 8 seconds are excellent for street cars, while professional drag cars can run under 5 seconds.
Q3: Can this calculator be used for 1/4 mile estimation?
A: No, this equation is specifically designed for 1/8 mile times. Different equations exist for 1/4 mile estimations.
Q4: Does the equation account for different types of horsepower?
A: The equation uses gross horsepower. For more accurate results, use wheel horsepower measurements if available.
Q5: Are there limitations to this equation?
A: The equation assumes ideal conditions and doesn't account for factors like traction limitations, transmission type, or aerodynamic drag which can affect actual performance.