1. What is TF Tuned Spring Rate?

The TF Tuned Spring Rate (K) is a measure of a spring's stiffness, calculated as the ratio of force to deflection. It's crucial for suspension tuning in vehicles to achieve optimal handling and ride comfort.

2. How Does the Calculator Work?

The calculator uses the spring rate equation:

Where:

• \( K \) — Spring rate (N/mm)
• \( Load \) — Applied force (Newtons)
• \( Deflection \) — Spring compression (millimeters)

Explanation: The equation shows that spring rate is the force required to compress the spring by a unit distance. Higher K values indicate stiffer springs.

3. Importance of Spring Rate Calculation

Details: Proper spring rate selection affects vehicle handling, ride quality, and suspension performance. It's essential for tuning suspension systems to match vehicle weight and intended use.

4. Using the Calculator

Tips: Enter the applied load in Newtons and the resulting deflection in millimeters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for the calculation?
A: The calculator uses Newtons for force and millimeters for deflection, resulting in N/mm units for spring rate.

Q2: How does spring rate affect vehicle performance?
A: Higher rates improve handling but reduce comfort, while lower rates increase comfort but may cause bottoming out.

Q3: What's a typical spring rate range for passenger cars?
A: Typically between 20-50 N/mm for most passenger vehicles, though performance cars may use higher rates.

Q4: How do I measure deflection accurately?
A: Measure spring length before and after applying the load, ensuring the spring is compressed evenly.

Q5: Can I use this for coilover spring tuning?
A: Yes, this calculation is fundamental for selecting proper coilover springs based on vehicle weight and desired characteristics.