Gear Ratio Calculator
Frequently Asked Questions
What is a gear ratio?
The gear ratio represents the relationship between the input (driver) gear and the output (driven) gear.
- It determines how torque and speed are transferred between gears.
- A **higher ratio** increases torque but reduces speed.
- A **lower ratio** increases speed but reduces torque.
How do I calculate gear ratio?
Use the formula:
- **Gear Ratio** = (Number of teeth on driven gear) / (Number of teeth on driver gear)
- Example: If the driver gear has **10 teeth** and the driven gear has **50 teeth**, the gear ratio is **5:1**.
What happens when I change the gear ratio?
Gear ratios affect both speed and torque:
- A **higher gear ratio (e.g., 5:1)** increases torque but decreases speed.
- A **lower gear ratio (e.g., 1:3)** increases speed but reduces torque.
How does gear ratio affect RPM?
The output RPM is calculated as:
- **Output RPM** = (Input RPM) / (Gear Ratio)
- If an engine runs at **2000 RPM** and the gear ratio is **2:1**, the output RPM is **1000 RPM**.
How does gear ratio affect torque?
The output torque is calculated as:
- **Output Torque** = (Input Torque) x (Gear Ratio)
- If an engine produces **100 Nm** torque and the gear ratio is **3:1**, the output torque is **300 Nm**.