Why change your Final Drive? – KMP Drivetrain Solutions (2024)

FAQs

What does changing final drive do? ›

Final Drive Ratio

A lower (taller) gear ratio provides a higher top speed, and a higher (shorter) gear ratio provides faster acceleration. . Besides the gears in the transmission, there is also a gear in the rear differential.

The purpose of the final drive gear assembly is to provide the final stage of gear reduction to decrease RPM and increase rotational torque. Typical final drive ratios can be between 3:1 and 4.5:1.

Purpose of Final Drive:

It gears down the speed of the propeller shaft to a suitable road wheel speed, 2. It divides the transmitted torque from the engine between the two driving wheels, 3.

It transmits power from the drive shaft to the driving wheels. Some final drives include wet brake systems. Final drives gear down the speed of the propeller shaft to a more suitable road speed. They also expand the torque range depending on gearing.

Excessive heat is a sign of failure in a final drive motor for a Bobcat or Caterpillar. If water instantly evaporates on touch, there's a problem. This can be the result of hot hydraulic fluid and not necessarily the motor itself. Loud or excessive noise can also be an indicator of a failing final drive motor.

If you want faster acceleration, you need a higher ratio rear end, but your top speed will decrease. If you wantva higher top speed, you need a lower ratio rear end, but your rate of acceleration will decrease.

A final drive's main function is to reduce the speed of the propeller shaft by decreasing RPMs and increasing the torque.

And since the both final drives are doing virtually the same amount of work, it's inevitable when one final drive bites the dust, the other side will soon meet the same demise. "It's generally accepted both final drives will fail within six months of each other," says Al Alexander of Conequip Parts.

The document outlines the main types of final drives including plain bevel, spiral bevel, hypoid spiral bevel, and worm and wheel drives. It provides details on limited slip differentials and some common mechanical and hydraulic types.

The final drive is that last part in a machine's powertrain system, and subsequently, the final component for increasing torque through gear reduction or changing the direction of power flow.

What is the final drive in a transmission system? ›

The final drive ratio is the last bit of gearing between your transmission and the driven wheels. By changing it, you can affect the performance of your car, rather dramatically in some cases. In general, a lower final drive ratio will lead to less torque at the wheels but a higher top speed.

The final drive is a gear train that further reduces the speed of the gearbox output shaft to adapt it to the traction wheels; this gear train is usually inte- grated with a differential mechanism.

Quicker acceleration: A higher differential ratio provides more torque to the wheels at lower speeds, resulting in faster acceleration and improved responsiveness.

To find the ideal selection, multiply the final drive ratio by the redline speed in fourth gear (152 mph) and divide that by the top track speed (140 mph). This would yield a theoretical 3.33—which is close enough to the nearest available final drive ratio of 3.36:1.

A final drive's main function is to reduce the speed of the propeller shaft by decreasing RPMs and increasing the torque. This all begins when the final drive engine's transmitted torque is split up with the two driving tracks and can turn the final drive at a 90-degree angle.

Is it better to have a higher or lower gear ratio? A higher gear ratio is good when you need more acceleration to cruise your vehicle, whereas a lower gear ratio provides more torque to get the vehicle moving from a resting position.