Suspension double wishbone.

Since its inception in 1935, the suspension double wishbone designers considered an ideal view of the independent suspension, as It provides constant control over the nature of the motion of the wheel. Double wishbone always support the wheel perpendicular to the road surface, thus achieving a high drivability.

Suspension double wishbone can be used on the front and rear axle. The suspension is used as the front suspension on many sports cars, sedans and executive class business.

On the rear axle suspension double wishbone rarely used. By virtue of its design, the suspension takes a significant amount of the installation and reduces the amount of luggage. On the other hand the application of the suspension on the rear axle leads to excessive handling (deflection of the rear wheels in the opposite direction to the rotation direction), and loss of vehicle control.

The design of the suspension double wishbone comprises two wishbones, springs and shock absorbers.

The arm may have a U-shaped or L-shaped. Each arm has two points of attachment to the body of the car and one-to-knuckle. Attachment to the body by means of rubber bushings - silent blocks that resist longitudinal loads during acceleration and braking. Fixing arm to the steering knuckle is made by means of ball joints - the so-called ball bearings.

The upper arm, typically has a smaller length that provides a negative camber and positive Compressive - Tensile (rebound). This feature provides additional vehicle stability when cornering, leaving the tire perpendicular to the road regardless of the position of the body.

Springs and dampers in the suspension double wishbone made coaxially. Shock top attached to a car body, the bottom - hinged to the lower wishbone.

Despite all the advantages, the suspension is double wishbone has a number of disadvantages, including the complexity of the design and the complexity of the associated services, significant geometric dimensions. These deficiencies deprived McPherson suspension in which the upper control arm is replaced by the shock absorber base.

A further development of the suspension double wishbone and a multi-link suspension. It double wishbones separated into individual levers, wherein one of the lower arms is formed to the longitudinal axis of the vehicle. This will get rid of the negative camber rear wheels to achieve the effect of rudder in the turns and, thus, improve the car's handling