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Rear Gear Ratio Torque Formula:
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Rear gear ratio torque represents the torque output at the wheels after being multiplied by the rear axle gear ratio. It's a crucial measurement for understanding vehicle performance and acceleration capabilities.
The calculator uses the rear gear ratio torque formula:
Where:
Explanation: The rear gear ratio multiplies the engine torque to determine the torque delivered to the wheels, affecting vehicle acceleration and towing capacity.
Details: Calculating rear gear ratio torque is essential for vehicle performance optimization, towing capacity assessment, and understanding how gear ratio changes affect overall vehicle dynamics and acceleration.
Tips: Enter engine torque in lb-ft and rear ratio as a dimensionless value. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is a typical rear gear ratio range?
A: Rear gear ratios typically range from 2.73:1 to 4.56:1 for most passenger vehicles, with higher ratios providing more torque multiplication.
Q2: How does rear gear ratio affect fuel economy?
A: Lower gear ratios generally provide better highway fuel economy but less acceleration, while higher ratios improve acceleration at the expense of fuel efficiency.
Q3: What's the difference between rear ratio and transmission gear ratio?
A: Rear ratio is the fixed ratio in the differential, while transmission gear ratios are variable ratios that change with gear selection. Both multiply engine torque.
Q4: When should I consider changing my rear gear ratio?
A: Consider gear ratio changes when modifying tire size significantly, improving towing capacity, or optimizing for specific performance needs.
Q5: Does this calculation account for torque converter multiplication?
A: No, this calculation only considers the rear axle ratio. Automatic transmissions with torque converters provide additional torque multiplication.