Trap Speed Calculator
Calculate your vehicle’s trap speed at the quarter-mile mark based on power, weight, and other performance factors. Get accurate estimates for drag racing performance.
Step 1: Vehicle Specifications
Understanding Power-to-Weight Ratio
The power-to-weight ratio is the primary factor determining acceleration and trap speed. Higher power and lower weight result in better performance. Aerodynamics and drivetrain efficiency also play important roles.
Step 2: Performance Parameters
About Trap Speed
Trap speed is the vehicle’s speed as it crosses the finish line in a quarter-mile drag race. It’s a good indicator of a vehicle’s power and overall performance, as it reflects the average acceleration throughout the run.
Trap Speed Results
Estimated Quarter-Mile Trap Speed
Vehicle Type Trap Speed Comparison
| Vehicle Type | Power-to-Weight | Trap Speed | Estimated ET |
|---|
Performance Factors Breakdown
Trap Speed Formula
Trap Speed = 224 × (Effective HP / Weight)^0.3333 × Drivetrain Factor × Aerodynamic Factor
To calculate trap speed: First calculate effective horsepower (engine HP × transmission efficiency), then apply the power-to-weight ratio formula with adjustments for drivetrain type and aerodynamics.
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