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Spring Track Width Given Roll Rate Of Suspension With Anti-Roll Bar Calculator

Formula Used:

\[ T_s = \sqrt{2 \times \frac{\left( \frac{K_{\Phi} \times K_t \times t_R^2 / 2}{K_t \times t_R^2 / 2 - K_{\Phi}} - R_{arb} \right)}{K_w}} \]

N·m/rad
N/m
m
N·m/rad
N/m

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1. What is Spring Track Width?

Spring Track Width is the distance between the springs on either side of the axle. It is a critical parameter in vehicle suspension design that affects roll stiffness and overall vehicle handling characteristics.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ T_s = \sqrt{2 \times \frac{\left( \frac{K_{\Phi} \times K_t \times t_R^2 / 2}{K_t \times t_R^2 / 2 - K_{\Phi}} - R_{arb} \right)}{K_w}} \]

Where:

Explanation: This formula calculates the optimal spring track width based on various suspension parameters including roll rate, tyre characteristics, and anti-roll bar properties.

3. Importance of Spring Track Width Calculation

Details: Accurate calculation of spring track width is crucial for proper suspension tuning, vehicle stability, roll control, and overall handling performance. It ensures optimal weight distribution and suspension geometry.

4. Using the Calculator

Tips: Enter all values in the specified units. Ensure positive values for all parameters. The rear track width and all rate values must be greater than zero for valid results.

5. Frequently Asked Questions (FAQ)

Q1: Why is spring track width important in suspension design?
A: Spring track width affects the vehicle's roll center height, roll stiffness distribution, and overall handling characteristics, making it a critical parameter for optimal suspension performance.

Q2: How does anti-roll bar affect spring track width calculation?
A: The anti-roll bar contributes additional roll stiffness, which is subtracted in the formula to determine the appropriate spring track width for the desired roll characteristics.

Q3: What are typical values for spring track width?
A: Spring track width typically ranges from 0.8 to 1.2 meters for most passenger vehicles, depending on vehicle size and suspension design.

Q4: How does tyre vertical rate influence the calculation?
A: Tyre vertical rate represents the spring rate of the tyre itself and significantly affects the overall suspension stiffness and thus the required spring track width.

Q5: Can this calculation be used for front suspension?
A: While the formula is primarily designed for rear suspension, the same principles can be applied to front suspension with appropriate parameter adjustments.

Spring Track Width Given Roll Rate Of Suspension With Anti-Roll Bar Calculator© - All Rights Reserved 2025