1. What is Stall Speed for Torque Converter?

Stall speed refers to the maximum rotational speed at which a torque converter can operate without transferring power to the transmission. It represents the point where the engine produces maximum torque but the vehicle remains stationary.

2. How Does the Calculator Work?

The calculator uses the stall speed formula:

Where:

• \( \tau_{converter} \) — Torque converter torque (N·m)
• \( g \) — Gravitational acceleration (m/s²)
• \( r \) — Radius (m)
• \( m \) — Mass (kg)

Explanation: This formula calculates the approximate stall speed based on the torque converter's characteristics and the vehicle's mass and dimensions.

3. Importance of Stall Speed Calculation

Details: Knowing the stall speed is crucial for proper torque converter selection, vehicle performance optimization, and preventing damage to transmission components.

4. Using the Calculator

Tips: Enter torque converter torque in N·m, gravitational acceleration in m/s² (default is 9.81 m/s²), radius in meters, and mass in kilograms. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect stall speed?
A: Stall speed is influenced by engine torque, torque converter design, vehicle weight, and final drive ratio.

Q2: Why is stall speed important for performance?
A: Proper stall speed matching allows the engine to operate in its optimal power band during acceleration.

Q3: What happens if stall speed is too high or too low?
A: Too high can cause overheating and reduced efficiency; too low can result in poor acceleration and sluggish performance.

Q4: Can stall speed be adjusted?
A: Stall speed is primarily determined by torque converter design, but some aftermarket converters offer different stall characteristics.

Q5: How does stall speed affect daily driving?
A: Higher stall speeds provide better acceleration but may reduce fuel efficiency in normal driving conditions.