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

The ET (Elapsed Time) Calculator for 1/8 mile drag racing predicts the time it takes for a vehicle to complete an eighth-mile distance based on weight and horsepower. This calculation helps racers estimate performance and optimize their setups.

2. How Does the Calculator Work?

The calculator uses the drag 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 6.290 to estimate the 1/8 mile elapsed time.

3. Importance of ET Calculation

Details: Accurate ET prediction is crucial for drag racers to estimate performance, compare vehicle setups, and make informed decisions about modifications and tuning.

4. Using the Calculator

Tips: Enter vehicle weight in pounds and horsepower. Both values must be positive numbers. The calculator will provide the estimated elapsed time for a 1/8 mile drag strip.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this ET calculation?
A: This provides a theoretical estimate based on weight and power. Actual ET can vary due to traction, aerodynamics, driver skill, and track conditions.

Q2: What is a good ET for 1/8 mile?
A: ET varies by vehicle type: Street cars typically run 8-12 seconds, while professional dragsters can run under 4 seconds.

Q3: Does this account for drivetrain losses?
A: No, this calculation uses raw horsepower. For more accuracy, use wheel horsepower instead of engine horsepower.

Q4: Can I use this for 1/4 mile calculations?
A: No, this equation is specifically calibrated for 1/8 mile distance. Different constants apply for 1/4 mile calculations.

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