Calculate torque at the axle shafts accounting for gear reduction, differential split, and drivetrain losses.
Input Parameters
Results
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Total Axle Torque
lb-ft
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Per Wheel Torque
lb-ft
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Drivetrain Loss
lb-ft
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Drivetrain Eff
%
Note: Drivetrain losses are measured by chassis dynamometer (SAE J2264). FWD is more efficient (fewer components). AWD adds a transfer case and center differential, increasing losses.
Reference
Total Axle Torque = Engine_T × Gear × Final_drive × Efficiency
Per Wheel = Total Axle / Driven_wheels
Drivetrain Loss = Engine_T × Gear × FD × (1 − Eff)
RWD Eff ≈ 92%, FWD ≈ 94%, AWD ≈ 87%
AWD splits: 50/50 or 40F/60R typical