What does the final drive gear do?
What does the final drive gear do?
The Final Drive is the last gearing used while transmitting the engine power to the wheels. It has two purposes. Firstly, it turns the power flow at the right angle from the propeller shaft to the rear axle. Secondly, it also provides a mechanical advantage (leverage) from the propeller shaft to the rear axle.
What does final gear mean?
The final drive ratio is the last bit of gearing between your transmission and the driven wheels. In general, a lower final drive ratio will lead to less torque at the wheels but a higher top speed. Meanwhile, a higher ratio will result in the opposite, i.e. more torque at the wheels but a lower top speed.
What is the function of final drive in tractor?
Final drive: Final drive is a gear reduction unit in the power trains between the differential and the drive wheels. Final drive transmits the power finally to the rear axle and the wheels. The tractor rear wheels are not directly attached to the half shafts but the drive is taken through a pair of spur gears.
What is the main function of differential gear?
differential gear, in automotive mechanics, gear arrangement that permits power from the engine to be transmitted to a pair of driving wheels, dividing the force equally between them but permitting them to follow paths of different lengths, as when turning a corner or traversing an uneven road.
Is Final drive a differential?
This second application is sometimes called the transfer box differential or central differential. 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.
What does higher final drive mean?
A higher final drive ratio will result in more torque at the wheels but a lower top speed. The reason a higher ratio will help accelerate a car faster is because the engine can spin up faster and creating more leverage to turn the wheels. Higher final drive ratio will mean: More work for the engine. Less fuel economy.
What are the types of final drive?
- Spur Bevel Gear type Final Drive.
- Spiral Bevel Gear Type.
- Hypoid Type.
- Worm and Worm Wheel Type.
- Rigid Axle Shaft.
- Flexible Axle Shaft.
- Semi Floating Axle. Hub is Directly Connected to axle shaft.
- Fully Floating Axle. Wheel hub is supported by two roller bearing running in axle casing.
How does the size of gears affect the speed?
If the gears are of different sizes, they can be used to increase the power of a turning force. The smaller wheel turns more quickly but with less force, while the bigger one turns more slowly with more force. Cars and bicycles use gears to achieve amazing speeds our bodies could never match without help.
What are the three types of final drive?
- Spur Bevel Type Final Drive.
- Spiral Bevel Type.
- Hypoid Type.
- Worm & Worm Wheel type.
What is the rear end of a car?
differential
The “rear end” is your mechanic’s shorthand for the differential. The differential is essentially a complex box of gears that allows the wheels to turn at different speeds when you take turns. Without it, you’d be dragging your outside wheel along the pavement whenever you turn.
How do you calculate final drive?
The straightforward way to calculate the Final Drive Ratio is to divide the number of teeth on the ring gear by the number of teeth on the pinion gear. For example, if the ring gear has 30 teeth and the pinion has 10, take the number 30 and divide by 10 to get the ratio of 3:1.
What is the function of a final drive?
A final drive is that part of a power transmission system between the drive shaft and the differential. Its function is to change the direction of the power transmitted by the drive shaft through 90 degrees to the driving axles.
What is a hypoid gear final drive?
The hypoid gear final drive is an improvement or variation of the spiral bevel design and is commonly used in light and medium trucks and all domestic rear- wheel drive automobiles. Hypoid gears have replaced spiral bevel gears because they lower the hump in the floor of the vehicle and improve gear-meshing action.
Why is the gear ratio called the final drive ratio?
If you alter this ratio, it also alters every gear’s effective ratio, thereby affecting the vehicle performance and economy. Hence, the manufacturers term it as the final drive ratio.
What are the different types of gears and their applications?
Table 2 – Industries and Applications of Gears by Type Type of Gear Common Industries and Applications Spur Clocks Pumps Watering systems Household Helical Same as spur gears but with greater load Bevel Pumps Power plants Material handling sys Worm Instruments Lifts and elevators Material
