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Unlike coil springs, leaf springs also locate the rear axle, eliminating the need for trailing arms and a Panhard rod, thereby saving cost and weight in a simple live axle rear suspension. A further advantage of a leaf spring over a helical spring is that the end of the leaf spring may be guided along a definite path.
The replacement FRP leaf spring showed no loss of performance after two million full cycles. [9] Packaging is cited as both an advantage and disadvantage of the transverse FRP leaf spring, as compared to coil springs, depending on the application. The FRP spring is typically set low in the suspension, resulting in a low center of gravity.
Originally on the long-wheelbase version a similar arrangement was employed but with the engine further from the rear of the frame. Conventional leaf springs were used, but the spring shackle-pins were fitted with polyurethane bushes, which would not require greasing and so reduce maintenance costs.
These were often made of low-carbon steel and usually took the form of multiple layer leaf springs. [4] Leaf springs have been around since the early Egyptians. Ancient military engineers used leaf springs in the form of bows to power their siege engines, with little success at first. The use of leaf springs in catapults was later refined and ...
Vertical shackles, as on a more typical fore and aft leaf spring, would have failed to provide lateral control. Some variants used a plain pivot at one end of the axle and a near-vertical shackle at the other. The wheel hub assemblies (sometimes known as steering knuckles) carry steering arms, the ends of which are linked by a tie or track rod.
Jeep Cherokee with 2 in (51 mm) suspension lift on 31 in (790 mm) diameter BFG all-terrain tires, using add-a-leaf and coil spring spacers The Jeep CJ vehicles had leaf spring suspension on both axles, which rendered the lifting process relatively simple. In this case, an inherent disadvantage of extreme lifting becomes obvious – the owner ...