![]() 1 leaf, with leaves numbered in descending order of length. ![]() The longest leaf is also known as the main, master, or No. For very heavy vehicles, a leaf spring can be made from several leaves stacked on top of each other in several layers, often with progressively shorter leaves. In the most common configuration, the center of the arc provides location for the axle, while loops formed at either end provide for attaching to the vehicle chassis. Generic diagram of a leaf spring pack, without eyes leaves are fastened together by the center bolt, midway along the length of the spring, and lateral alignment is enforced by multiple clips arc-shaped length of spring steel of rectangular cross-section.Ī leaf spring takes the form of a slender arc-shaped length of spring steel of rectangular cross-section. For this reason, some manufacturers have used mono-leaf springs. However, this friction is not well controlled, resulting in stiction and irregular suspension motions. Leaf springs can serve multiple suspension functions: location, springing, and to some extent damping as well, through interleaf friction. Lateral leaf springs are the most commonly used arrangement, running the length of the vehicle and mounted perpendicular to the wheel axle, but numerous examples of transverse leaf springs exist as well. A leaf spring is one or more narrow, arc-shaped, thin plates which are attached to the axle and chassis in a way that allows the leaf spring to flex vertically in response to irregularities in the road surface. Originally called a laminated or carriage spring, and sometimes referred to as a semi-elliptical spring, elliptical spring, or cart spring, it is one of the oldest forms of vehicle suspension. On the left, the spring is connected to the frame through a shackle.Ī leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. A traditional semi-elliptical Hotchkiss leaf spring arrangement.
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