1. What is Cycling Gear Ratio Speed?

The cycling gear ratio speed calculation determines how fast you're going based on your pedaling cadence, gear ratio, and wheel circumference. It's essential for cyclists to understand their speed at different gear combinations.

2. How Does the Calculator Work?

The calculator uses the cycling speed equation:

Where:

• \( Cadence \) — Pedaling rate in revolutions per minute (RPM)
• \( Ratio \) — Gear ratio (chainring teeth ÷ sprocket teeth)
• \( Circumference \) — Wheel circumference in meters

Explanation: The equation calculates how much distance is covered per minute based on your pedaling rate and gear setup, then converts it to km/h.

3. Importance of Gear Ratio Calculation

Details: Understanding gear ratios helps cyclists select appropriate gears for different terrains and maintain optimal cadence for efficiency and speed.

4. Using the Calculator

Tips: Enter your cadence (typically 60-100 RPM for recreational cyclists), gear ratio (e.g., 50/14 = 3.57), and wheel circumference (standard road bike ~2.1m).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical cadence range?
A: Recreational cyclists typically pedal at 60-80 RPM, while competitive cyclists often maintain 80-100 RPM.

Q2: How do I find my gear ratio?
A: Divide the number of teeth on your chainring by the number on your rear sprocket (e.g., 50 teeth chainring with 25 teeth sprocket = 2.0 ratio).

Q3: How to measure wheel circumference?
A: Measure from ground to wheel axle, double for diameter, then multiply by π (3.1416). Or roll the wheel one revolution and measure distance.

Q4: Why does wheel size matter?
A: Larger wheels cover more distance per revolution, so the same cadence and gear ratio will produce higher speed with larger wheels.

Q5: How accurate is this calculation?
A: It provides theoretical speed. Actual speed may vary due to factors like tire pressure, surface, wind, and riding position.