1. What is Gear Ratio?

The gear ratio is the ratio of the number of teeth on the driven gear to the number of teeth on the driver gear. It determines the mechanical advantage and speed relationship between two meshing gears.

2. How Does the Calculator Work?

The calculator uses the gear ratio formula:

Where:

• \( Teeth_{driven} \) — Number of teeth on the driven gear
• \( Teeth_{driver} \) — Number of teeth on the driver gear

Explanation: The gear ratio shows how many turns the driver gear must complete to turn the driven gear once. A higher ratio means more torque but less speed.

3. Importance of Gear Ratio

Details: Gear ratios are crucial in automotive transmissions, industrial machinery, and any mechanical system requiring speed/torque conversion. They affect acceleration, fuel efficiency, and towing capacity in vehicles.

4. Using the Calculator

Tips: Enter the number of teeth for both gears (must be positive integers). The calculator will show the ratio in X:1 format.

5. Frequently Asked Questions (FAQ)

Q1: What does a gear ratio of 3:1 mean?
A: It means the driver gear must turn 3 times to make the driven gear turn once, providing more torque but less speed.

Q2: How does gear ratio affect vehicle performance?
A: Lower ratios (like 3:1) provide better acceleration and towing, while higher ratios (like 0.7:1) improve fuel efficiency at highway speeds.

Q3: What's the difference between gear ratio and final drive ratio?
A: Gear ratio refers to individual gear pairs, while final drive ratio is the overall ratio including all gears in the transmission and differential.

Q4: Can gear ratio be less than 1?
A: Yes, ratios below 1 (like 0.8:1) are called overdrive gears, where the driven gear turns faster than the driver gear.

Q5: How do I calculate speed from gear ratio?
A: Output speed = Input speed / Gear ratio. For example, with 3:1 ratio and 3000 RPM input, output is 1000 RPM.