1. What is a Single Speed Gear Ratio Calculator?

Definition: This calculator determines the gear ratio for single-speed bicycles by comparing the number of teeth on the chainring to the rear cog.

Purpose: It helps cyclists understand their bike's gearing and make informed decisions about gear selection for optimal pedaling efficiency.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( GR \) — Gear ratio (unitless)
• \( CR \) — Chainring teeth count
• \( CS \) — Cog sprocket teeth count

Explanation: The gear ratio shows how many times the rear wheel turns for each complete pedal revolution.

3. Importance of Gear Ratio Calculation

Details: Proper gear ratio selection affects pedaling cadence, speed potential, and climbing ability. Higher ratios provide more speed but require more effort.

4. Using the Calculator

Tips: Enter the number of teeth on your chainring and rear cog. Both values must be whole numbers greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical single speed gear ratio?
A: Common ratios range from 2.0 to 3.0, with 2.5 being a popular middle ground for urban riding.

Q2: How does gear ratio affect riding?
A: Higher ratios are harder to pedal but provide more speed; lower ratios are easier for climbing hills.

Q3: What's the difference between gear ratio and gear inches?
A: Gear inches incorporates wheel size, while gear ratio is purely about the relationship between chainring and cog.

Q4: Can I use this for fixed gear bikes?
A: Yes, the calculation is identical for fixed gear bicycles.

Q5: What's better for hilly areas?
A: Lower gear ratios (smaller chainring or larger cog) make climbing easier.