1. What is the Flywheel to Wheel Power Equation?

The Flywheel to Wheel Power equation calculates the actual power delivered to the wheels after accounting for drivetrain losses. It's essential for understanding real-world performance of motors and vehicles.

2. How Does the Calculator Work?

The calculator uses the equation:

Where:

• \( Wheel_{kW} \) — Power delivered to wheels (kW)
• \( Flywheel_{kW} \) — Engine/motor power at flywheel (kW)
• \( Loss_{fraction} \) — Fraction of power lost in drivetrain (decimal)

Explanation: The equation accounts for power losses through the transmission, differential, and other drivetrain components.

3. Importance of Power Loss Calculation

Details: Understanding drivetrain losses is crucial for vehicle performance analysis, efficiency calculations, and comparing different powertrain configurations.

4. Using the Calculator

Tips: Enter flywheel power in kW and loss fraction as a decimal (e.g., 0.15 for 15% loss). All values must be valid (power > 0, loss between 0-1).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical loss fraction for vehicles?
A: Front-wheel drive: 10-15%, Rear-wheel drive: 15-20%, All-wheel drive: 20-25% loss is typical.

Q2: Does this account for all power losses?
A: This accounts for drivetrain losses only, not aerodynamic drag, rolling resistance, or accessory loads.

Q3: How is flywheel power measured?
A: Flywheel power is typically measured on an engine dynamometer with no drivetrain connected.

Q4: Can I use this for electric motors?
A: Yes, the principle is the same, though loss fractions may differ for electric drivetrains.

Q5: How accurate is this calculation?
A: It provides a good estimate, but actual losses vary with speed, temperature, and drivetrain condition.