1. What is a Torque Calculator?

Definition: This calculator estimates the torque output of a motor based on its horsepower and RPM.

Purpose: It helps engineers, mechanics, and motor enthusiasts determine the torque characteristics of motors for various applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (lb-ft)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute
• 5252 — Conversion constant (derived from the relationship between HP, torque, and RPM)

Explanation: The formula shows that torque is inversely proportional to RPM when horsepower is constant.

3. Importance of Torque Calculation

Details: Understanding torque is crucial for selecting motors, designing mechanical systems, and ensuring proper power transmission.

4. Using the Calculator

Tips: Enter the motor's horsepower and RPM. Both values must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 used in the formula?
A: 5252 is the RPM at which horsepower and torque (in lb-ft) are equal, derived from the conversion between units of power and rotational force.

Q2: What's the relationship between torque and horsepower?
A: Horsepower is a function of torque and RPM. At 5252 RPM, torque (lb-ft) and horsepower are numerically equal.

Q3: How does torque affect vehicle performance?
A: Higher torque at lower RPMs provides better acceleration and towing capacity, while high-RPM horsepower affects top speed.

Q4: Can I use this for electric motors?
A: Yes, the formula applies to all motors, though electric motors often have different torque curves than combustion engines.

Q5: What units does this calculator use?
A: This calculator uses imperial units (HP, lb-ft, RPM). For metric units (kW, Nm), a different formula is needed.