1. What is Overall Gear Ratio?

The overall gear ratio is the product of the transmission gear ratio and the differential gear ratio. It represents the total gear reduction between the engine and the wheels.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Transmission \) — Gear ratio of the transmission
• \( Differential \) — Gear ratio of the differential

Explanation: The overall gear ratio determines how many times the engine must turn to make the wheels turn once.

3. Importance of Gear Ratio Calculation

Details: The overall gear ratio affects vehicle acceleration, top speed, fuel economy, and towing capacity. Proper gear ratio selection is crucial for optimal vehicle performance.

4. Using the Calculator

Tips: Enter the transmission ratio and differential ratio as positive numbers. Typical values range from 2.0 to 5.0 for transmission and 2.5 to 4.5 for differential in most vehicles.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical overall gear ratio?
A: For passenger cars, it's typically between 8:1 and 12:1. Performance vehicles may have higher ratios for better acceleration.

Q2: How does gear ratio affect performance?
A: Higher ratios provide better acceleration but lower top speed. Lower ratios improve top speed and fuel economy but reduce acceleration.

Q3: Should I change my gear ratios?
A: This depends on your driving needs. Consult a professional before making changes as it affects many vehicle systems.

Q4: How do I find my transmission ratio?
A: Check your vehicle's manual or manufacturer specifications. It varies by gear (1st, 2nd, etc.) in manual transmissions.

Q5: Does this apply to electric vehicles?
A: Yes, though EVs often have simpler single-speed transmissions, the same calculation applies to their gear reduction systems.