1. What is Torque to Weight Ratio?

The torque to weight ratio is a measure of a vehicle's performance, comparing the torque produced by the engine to the weight of the vehicle. It indicates how quickly a vehicle can accelerate, with higher ratios generally meaning better acceleration.

2. How Does the Calculator Work?

The calculator uses the torque to weight ratio formula:

Where:

• \( \tau \) — Torque (Nm)
• \( m \) — Vehicle mass (kg)
• \( g \) — Acceleration due to gravity (9.8 m/s²)

Explanation: The ratio compares the rotational force (torque) to the force of gravity acting on the vehicle's mass. A higher ratio means the engine has more torque relative to the vehicle's weight.

3. Importance of Torque to Weight Ratio

Details: This ratio is crucial for understanding a vehicle's acceleration capabilities. It's particularly important for performance vehicles, trucks that need to haul heavy loads, and vehicles that operate on steep inclines.

4. Using the Calculator

Tips: Enter torque in Newton-meters (Nm), vehicle mass in kilograms (kg), and gravity in m/s² (default is 9.8). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a good torque to weight ratio?
A: For passenger cars, 0.1-0.2 is typical. Performance cars may exceed 0.3, while heavy trucks might be below 0.1.

Q2: How does this differ from power to weight ratio?
A: Power to weight considers maximum power (accounting for RPM), while torque to weight focuses on low-end pulling force.

Q3: Should I use curb weight or gross weight?
A: For performance evaluation, use curb weight (empty vehicle). For load capacity, use gross vehicle weight.

Q4: Does this apply to electric vehicles?
A: Yes, and EVs often have excellent torque to weight ratios due to instant torque availability.

Q5: How does gearing affect this ratio?
A: The calculated ratio is at the engine. Actual wheel torque depends on transmission and differential gearing.