1. What is the Stall Formula?

The Stall formula calculates torque converter stall speed based on a constant value and engine horsepower. It provides an estimation of the RPM at which the torque converter will stall under load.

2. How Does the Calculator Work?

The calculator uses the Stall formula:

Where:

• \( K \) — Constant value (unitless)
• \( HP \) — Horsepower (hp)

Explanation: The formula calculates stall speed by multiplying the constant value by the square root of the engine's horsepower.

3. Importance of Stall Calculation

Details: Accurate stall speed calculation is crucial for proper torque converter selection, vehicle performance optimization, and ensuring compatibility between engine and transmission components.

4. Using the Calculator

Tips: Enter the constant value (K) and horsepower (HP). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical K value range?
A: K values typically range from 20 to 30, depending on the specific torque converter design and application.

Q2: How does stall speed affect vehicle performance?
A: Higher stall speeds allow the engine to reach its power band faster, improving acceleration but potentially reducing fuel efficiency.

Q3: When should stall speed be calculated?
A: During transmission upgrades, engine modifications, or when selecting a new torque converter for optimal performance matching.

Q4: Are there limitations to this formula?
A: This formula provides an estimation and actual stall speed may vary based on torque converter design, fluid dynamics, and other factors.

Q5: Should this calculation be used for racing applications?
A: While useful for estimation, professional racing applications often require more detailed analysis and testing for precise torque converter selection.