1. What is the Drag Racing ET Equation?

The Drag Racing ET (Elapsed Time) equation estimates 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 performance potential.

2. How Does the Calculator Work?

The calculator uses the Drag Racing ET equation:

Where:

• \( ET \) — Elapsed Time (seconds)
• \( WT \) — Vehicle weight (pounds)
• \( HP \) — Engine horsepower (hp)

Explanation: The equation calculates the theoretical elapsed time for a vehicle to complete a 1/8 mile drag strip based on the power-to-weight ratio.

3. Importance of ET Calculation

Details: ET calculation is important for drag racers to estimate vehicle performance, compare different setups, and set realistic performance goals before actual track testing.

4. Using the Calculator

Tips: Enter vehicle weight in pounds and horsepower. Use curb weight (vehicle weight with fluids but without driver) for more accurate results. All values must be valid (weight > 0, horsepower > 0).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this ET estimation?
A: This provides a theoretical estimation. Actual ET can vary based on traction, drivetrain efficiency, weather conditions, and driver skill.

Q2: What is a good 1/8 mile ET?
A: For street cars, 8-9 seconds is good. Performance cars can run 6-7 seconds, while dedicated drag cars can achieve sub-5 second times.

Q3: Should I use wheel horsepower or engine horsepower?
A: For most accurate results, use wheel horsepower which accounts for drivetrain losses. Engine horsepower will give more optimistic results.

Q4: Does this equation work for all types of vehicles?
A: It works best for rear-wheel drive vehicles with good traction. Front-wheel drive and all-wheel drive vehicles may have different results due to traction characteristics.

Q5: How can I improve my ET?
A: Reducing weight, increasing horsepower, improving traction, and optimizing launch technique are the primary ways to improve ET.