Effective Gearing Calculator — Calculate Your Gear Ratios

Effective Gearing Calculator

Calculate effective gear ratios for vehicles, bicycles, and machinery. Determine optimal gear combinations for performance, efficiency, and torque multiplication.

Step 1: Primary Gearing

2.5:1
3.0:1

Understanding Gear Ratios

Higher gear ratios provide more torque but lower speed. Lower ratios provide higher speed but less torque. Effective gearing combines multiple gear reductions.

Step 2: Configuration

About Effective Gearing

Effective gearing is the overall ratio between engine RPM and wheel RPM. It determines acceleration characteristics, top speed, and fuel efficiency at given RPM.

Effective Gearing Results

Summary
Vehicle Comparison
Ratio Breakdown

Effective Gear Ratio

7.5:1
Based on 2.5:1 primary and 3.0:1 secondary ratios
Vehicle Speed
45 MPH
Torque Multiplication
7.5x
Wheel RPM
400 RPM
Final Drive Ratio
3.5:1

Vehicle Type Gear Comparison

Vehicle Type Typical Ratio Torque Multiplier Top Speed at 6000 RPM

Gear Ratio Breakdown

Effective Ratio Formula

Effective Ratio = Primary Ratio × Secondary Ratio × Final Drive Ratio

To calculate effective gearing: Multiply all gear ratios in the drivetrain. For speed calculation: (Engine RPM × Tire Circumference) ÷ (Effective Ratio × 336)

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