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Torque Formula:
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The motor torque formula calculates the rotational force produced by an engine or motor based on its horsepower and rotational speed. It's a fundamental equation in mechanical engineering and automotive applications.
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 comes from the fact that one horsepower is defined as 550 foot-pounds per second, and there are 2π radians in one revolution.
Details: Torque calculation is essential for designing mechanical systems, selecting appropriate motors for applications, and understanding engine performance characteristics in automotive contexts.
Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why is 5252 used in the formula?
A: 5252 is derived from the conversion between horsepower (550 ft-lb/sec) and RPM (revolutions per minute), accounting for the relationship between rotational speed and work.
Q2: What are typical torque values for different engines?
A: Torque values vary widely: small car engines might produce 100-200 lb-ft, while large diesel engines can produce over 1000 lb-ft of torque.
Q3: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, while horsepower relates to top speed. Higher torque at lower RPMs provides better low-end acceleration.
Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to both internal combustion engines and electric motors, as it's based on the fundamental relationship between power and rotational force.
Q5: How does gear reduction affect torque?
A: Gear reduction increases torque while decreasing RPM, maintaining the same power output (minus efficiency losses).