final drive
Torque-multiplying output stage
Final drive is the last set of gears in a vehicle's drivetrain, transferring power from the transmission or differential to the wheels.
The final drive ratio—how many times the driveshaft rotates per wheel rotation—affects acceleration and top speed: a higher ratio means quicker acceleration, a lower ratio allows higher speeds.
The truck's final drive was geared for towing.
Relative difference between things
- ring gearToothed wheel with internal teeth
- pinionToothed wheel, small
- crown wheelToothed wheel in differentials
- axleShaft for wheel rotation
spur gear · worm gear · driveshaft · propeller shaft · wheel hub · universal joint · bearings · housing
Merged gearbox and differential
- transfer caseGearbox distributing power to axles
- live axleAxle transmitting engine power
- solid axleSingle beam linking wheels
Teeth count relationship
- reductionMaking something smaller
- overdriveEfficiency mode at speed
- underdriveOutput slower than input
- mechanical advantageForce output over input
acceleration · top speed · fuel economy · cruising · launch
differential
Relative difference between things
- ring gearToothed wheel with internal teeth
- pinionToothed wheel, small
- crown wheelToothed wheel in differentials
axle · spur gear · worm gear · driveshaft · propeller shaft · wheel hub · universal joint · bearings · housing · oil seal
transaxle
Merged gearbox and differential
- transfer caseGearbox distributing power to axles
- live axleAxle transmitting engine power
- solid axleSingle beam linking wheels
gear ratio
Teeth count relationship
- reductionMaking something smaller
- overdriveEfficiency mode at speed
- underdriveOutput slower than input
mechanical advantage · acceleration · top speed · fuel economy · cruising · launch
- drivetrain partstransmission, driveshaft, gearbox, axle, differential
- Powertrainengine, transmission, drivetrain, motor, gearbox
- Drivetraingearbox, differential, transaxle, driveshaft, transfer case
- Drivetrain Termsdifferential, axle, prop shaft, driveshaft, LSD
- drivetrains4WD, 4x4, AWD, differential, transfer case
- excavator partsboom, bucket, cab, arm, stick
final drivepower source
Origin of energy
prime mover · engine · motor · power plant · drive unit
drive, final, finally, finale, finalized, finality, finalizing, finalization