Most cars need 3 to 4 complete turns of the steering wheel to go from lock to lock (from far right to far remaining). The steering ratio demonstrates how far to turn the tyre for the wheels to carefully turn a certain amount. A higher ratio means you should turn the tyre more to carefully turn the wheels a certain amount and lower ratios give the steering a quicker response.
Some cars use variable ratio steering. This rack and pinion steering system uses a different number of the teeth per cm (tooth pitch) in the centre than at the ends. The effect is the steering is more sensitive when it’s turned towards lock than when it is close to its central position, making the automobile more maneuverable.
There are two main types of rack and pinion steering systems:
End take off – the tie rods are mounted on the end of the steering rack via the inner axial rods.
Centre take off – bolts attach the tie rods to the centre of the steering rack.
Rack and pinion steering systems aren’t suitable for steering the wheels on rigid front axles, because the axles move in a longitudinal direction during wheel travel as a result of the sliding-block information. The resulting undesirable relative movement between tires and steering gear trigger unintended steering movements. Therefore just steering gears with a rotational movement are utilized. 
The intermediate lever 5 sits on the steering knuckle. When the wheels are considered the left, the rod is subject to tension and turns both wheels simultaneously, whereas when they are switched to the right, part 6 is at the mercy of compression. An individual tie rod links the wheels via the steering arm.
Most cars need three to four complete turns of the steering wheel to move from lock to lock (from far right to far still left). The steering ratio shows you how far to carefully turn the steering wheel for the tires to carefully turn a certain quantity. A higher ratio means you should turn the steering wheel more to carefully turn the wheels a certain amount and lower ratios give the steering a quicker response.
Some cars use variable ratio steering. This rack and pinion steering program uses a different number of teeth per cm (tooth pitch) in the centre than at the ends. The result is the steering is certainly more sensitive when it’s turned towards lock than when it is near to its central position, making the car more maneuverable.
There are two main types of rack and pinion steering systems:
End remove – the tie rods are attached to the finish of the steering rack via the inner axial rods.
Centre remove – bolts attach the tie rods to the center of the steering rack.
Rack and pinion steering systems aren’t ideal for steering the tires on rigid front side axles, since the axles move in a longitudinal path during wheel travel because of this of the sliding-block guide. The resulting unwanted relative movement between tires and steering gear trigger unintended steering movements. Consequently just steering gears with a rotational movement are used. The intermediate lever 5 sits on the steering knuckle. When the wheels are considered the left, the rod is subject to stress and turns both wheels simultaneously, whereas when they are switched to the proper, part 6 is at the mercy of compression. An individual tie rod connects the wheels via the steering arm.
Rack-and-pinion steering is quickly getting the most common type of steering on vehicles, small trucks. It is actually a pretty simple system. A rack-and-pinion gearset is certainly enclosed in a metal tube, with each end of the rack protruding from the tube. A rod, known as a tie rod, links to each end of the rack.
The pinion equipment is attached to the steering shaft. When you turn the steering wheel, the apparatus spins, moving the rack. The tie rod at each end of the rack connects to the steering arm on the spindle.
The rack-and-pinion gearset does two things:
It converts the rotational movement of the steering wheel in to the linear motion needed to turn the wheels.
It provides a gear reduction, making it easier to turn the wheels.
On many cars, it takes three to four complete revolutions of the tyre to make the wheels turn from lock to lock (from far remaining to far right).
The steering ratio is the ratio of how far you turn the tyre to what lengths the wheels turn. An increased ratio means that you have to turn the steering wheel more to get the wheels to turn a given distance. However, less effort is necessary because of the higher gear ratio.
Generally, lighter, sportier cars possess lower steering ratios than bigger cars and trucks. The lower ratio gives the steering a quicker response — you don’t have to turn the tyre as much to get the wheels to switch a given distance — which is a desirable trait in sports vehicles. These smaller cars are light enough that even with the lower ratio, the effort necessary to turn the steering wheel is not excessive.
Some cars have variable-ratio steering, which uses a rack-and-pinion gearset which has a different tooth pitch (number of teeth per “) in the guts than it has on the exterior. This makes the car respond quickly whenever starting a turn (the rack is close to the center), and also reduces effort near the wheel’s turning limits.
When the rack-and-pinion is in a power-steering system, the rack has a slightly different design.
Section of the rack contains a cylinder with a piston in the centre. The piston is connected to the rack. There are two liquid ports, one on either aspect of the piston. Providing higher-pressure fluid to one side of the piston forces the piston to move, which in turn movements the rack, offering the power assist.
Rack and pinion steering runs on the gear-set to convert the circular motion of the tyre in to the linear motion required to turn the tires. It also provides a gear reduction, therefore turning the tires is easier.
It works by enclosing the rack and pinion gear-arranged in a metallic tube, with each end of the rack protruding from the tube and linked to an axial rod. The pinion gear is attached to the steering shaft so that when the tyre is turned, the gear spins, moving the rack. The axial rod at each end of the rack connects to the tie rod end, which is mounted on the spindle.