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 number of teeth on the cog.

Purpose: It helps cyclists understand their bike's gearing and make informed decisions about gear selection for different riding conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( GR \) — Gear ratio (unitless)
• \( \text{Chainring} \) — Number of teeth on front chainring
• \( \text{Cog} \) — Number of teeth on rear cog

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 efficiency, speed potential, and hill-climbing ability. Higher ratios are better for speed, lower ratios for climbing.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's a typical gear ratio for single-speed bikes?
A: Common ratios range from 2.0 to 3.0, with 2.5-2.8 being popular for urban riding.

Q2: How does gear ratio affect riding?
A: Higher ratios make pedaling harder but increase speed. Lower ratios make pedaling easier but limit top speed.

Q3: What's the difference between gear ratio and gear inches?
A: Gear inches also factors in wheel size, while gear ratio is purely teeth-based.

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

Q5: How do I choose the right gear ratio?
A: Consider your terrain, fitness level, and riding style. Flatter areas can use higher ratios, hilly areas need lower ratios.