1. What is the 1/8 Mile ET Calculator?

The Wallace Racing 1/8 Mile ET Calculator estimates the elapsed time for a vehicle to complete a 1/8 mile drag race based on weight and horsepower. This calculation helps racers predict performance and optimize their vehicle setup.

2. How Does the Calculator Work?

The calculator uses the Wallace Racing equation:

Where:

• \( ET \) — Elapsed Time (seconds)
• \( Weight \) — Vehicle weight (pounds)
• \( HP \) — Horsepower

Explanation: The equation calculates the cube root of the weight-to-power ratio and multiplies it by the constant 5.825 to estimate the 1/8 mile elapsed time.

3. Importance of ET Calculation

Details: Accurate ET estimation is crucial for drag racers to predict performance, compare different vehicle setups, and optimize power-to-weight ratios for competitive racing.

4. Using the Calculator

Tips: Enter vehicle weight in pounds and horsepower. Both values must be positive numbers. The calculator provides an estimated elapsed time for the 1/8 mile distance.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this ET calculation?
A: This provides a theoretical estimate based on weight and power. Actual performance may vary due to traction, aerodynamics, transmission efficiency, and other factors.

Q2: What is a good 1/8 mile ET?
A: For street cars, 8-10 seconds is common. Professional drag cars can achieve 4-6 seconds. The ET depends on the vehicle type and purpose.

Q3: Does this account for driver weight?
A: The weight input should include the total vehicle weight including driver, fuel, and all equipment for accurate results.

Q4: Can I use this for 1/4 mile estimation?
A: This equation is specifically for 1/8 mile. For 1/4 mile, different equations and multipliers are typically used.

Q5: What factors affect actual ET besides weight and HP?
A: Traction, tire compound, suspension setup, weather conditions, altitude, and transmission type all significantly impact actual elapsed times.