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Hughes Torque Converter Equation:
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The Hughes torque converter equation estimates stall speed based on horsepower, weight, and a constant factor. It provides a practical method for determining the appropriate torque converter stall speed for automotive applications.
The calculator uses the Hughes equation:
Where:
Explanation: The equation calculates the approximate stall speed of a torque converter based on the power-to-weight ratio of the vehicle and a specific constant value.
Details: Proper stall speed calculation is crucial for optimizing vehicle launch performance, ensuring efficient power transfer, and preventing drivetrain damage in automotive applications.
Tips: Enter horsepower, vehicle weight in pounds, and the appropriate constant factor K. All values must be valid positive numbers.
Q1: What is torque converter stall speed?
A: Stall speed is the maximum engine RPM that can be achieved with the transmission in gear and the brakes fully applied before the drive wheels begin to turn.
Q2: How do I determine the K constant value?
A: The K constant varies based on specific torque converter design and application. Consult manufacturer specifications or technical documentation for appropriate values.
Q3: What factors affect stall speed selection?
A: Engine torque curve, vehicle weight, transmission type, tire size, and intended use (street, strip, towing) all influence optimal stall speed selection.
Q4: Are there limitations to this equation?
A: This provides an estimate and may need adjustment based on specific vehicle characteristics, transmission modifications, and real-world testing results.
Q5: When should I consult a professional?
A: For high-performance applications, racing vehicles, or when precise stall speed matching is critical, consult with torque converter specialists or automotive engineers.