1. What is the Torque Formula?

The torque formula T = (HP × 5252) / RPM calculates torque from horsepower and RPM. This equation is fundamental in mechanical engineering and automotive applications for determining rotational force.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (lb-ft)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute
• 5252 — Conversion constant

Explanation: The constant 5252 comes from the relationship between rotational speed, power, and torque, where horsepower and torque intersect at 5252 RPM in the formula.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for engine performance analysis, vehicle dynamics, mechanical design, and understanding power transmission systems.

4. Using the Calculator

Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 used in the formula?
A: 5252 is the RPM at which horsepower and torque values are equal in the imperial system, derived from the conversion between different units of measurement.

Q2: What are typical torque values for engines?
A: Torque values vary significantly by engine type and size. Automotive engines typically range from 100-500 lb-ft, while industrial engines can produce much higher 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 and overall performance capability.

Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to electric motors as well, though electric motors often have different torque characteristics compared to internal combustion engines.

Q5: What's the relationship between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × RPM / 5252 in the imperial system.