1. What is a Gear Ratio Calculator?

Definition: This calculator determines the gear ratio between two gears based on their teeth count or rotational speeds.

Purpose: Essential for Jeep owners and off-road enthusiasts to understand their vehicle's gearing for better crawling capability and performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Driven — Number of teeth on driven gear or its RPM
• Driver — Number of teeth on driver gear or its RPM

Explanation: The ratio shows how many times the driven gear rotates for each rotation of the driver gear.

3. Importance of Gear Ratio Calculation

Details: Proper gear ratios affect torque, speed, and crawling capability. Lower ratios provide more torque for off-roading while higher ratios are better for highway speeds.

4. Using the Calculator

Tips: Enter either the number of teeth for both gears or their RPMs. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a good gear ratio for off-roading?
A: For serious off-roading, ratios between 4:1 and 5:1 are common. Stock Jeeps typically have 3.21-3.73 ratios.

Q2: How does this relate to crawl ratio?
A: Crawl ratio is the product of transmission gear, transfer case ratio, and axle gear ratio. This calculator helps determine component ratios.

Q3: Should I use teeth count or RPM?
A: Teeth count is used for physical gears. RPM is used when measuring input/output speeds of a gear system.

Q4: What if my driven gear is smaller than driver?
A: This results in a ratio less than 1, meaning increased speed but reduced torque.

Q5: How do I calculate overall gear reduction?
A: Multiply all individual gear ratios in your drivetrain (transmission, transfer case, and axles).