1. What is a Cycling Power Speed Calculator?

Definition: This calculator estimates the power required for cycling based on resistance forces and speed.

Purpose: It helps cyclists and coaches determine the power output needed to maintain a certain speed against various resistances.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_w \) — Cycling power (watts)
• \( F_r \) — Rolling resistance force (N)
• \( F_d \) — Drag force (N)
• \( F_g \) — Gravity force (N)
• \( V \) — Speed (m/s)

Explanation: The total resistance forces are summed and multiplied by speed to calculate the required power output.

3. Importance of Cycling Power Calculation

Details: Understanding power requirements helps in training, equipment selection, and race strategy planning.

4. Using the Calculator

Tips: Enter all resistance forces in newtons (N) and speed in meters per second (m/s). All values must be ≥ 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine rolling resistance?
A: Rolling resistance depends on tire type, pressure, and surface. Typical values range from 5-15N for road cycling.

Q2: What affects drag force?
A: Drag depends on air density, rider position, bike aerodynamics, and wind conditions. It increases with speed squared.

Q3: When is gravity force significant?
A: Gravity force becomes important on hills. It's calculated as weight × grade (slope percentage).

Q4: How can I convert km/h to m/s?
A: Divide km/h by 3.6 (e.g., 36 km/h = 10 m/s).

Q5: What's a typical power output?
A: Recreational cyclists average 75-200W, while pros can sustain 300-400W for hours.