A suspension system is a system of springs, shock absorbers and linkages that connect a vehicle to its wheels and allows relative motion between the two. It is responsible for a vehicle's handling and braking for safety. There are a variety of independent suspension systems; however in this blog we will only be comparing two types of Spring Suspension Systems; The Leaf Spring System and the Coil Spring System.
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Well a leaf spring suspension is made of a series of relatively long strips of steel attached at both ends to a frame and suspending the axle in the middle. A leaf spring takes the form of a slender arc-shaped length of spring steel of rectangular cross-section. Coil springs as the name suggests, look exactly like how one imagines a spring to look like. It sits on top of the axle or at the lower control arm and the chassis. A coil by definition is a mechanical device which is typically used to store energy and subsequently release it, to absorb shock, or to maintain a force between contacting surfaces.
Here's a quick comparison of Leaf Springs with Coil Springs for the sake of debate:
Leaf spring suspensions are much simpler in terms of functionality as the axle is suspended by the spring, and does not require the arduous suspension geometry of the coil-spring set-up. Leaf springs are also much sturdier as compared to the coil springs. They are capable of handling much higher loads with less deflection than coils. Trucks with leaf springs are also easier to raise or lower.
The leaf springs' simplicity is as much of a curse as a blessing. Since this spring is attached at fixed points on the chassis, it leaves a minuscule room for adjustability and customization of the suspension geometry. These springs also flex a great deal less than coil springs, resulting in a loss of wheel-to-ground contact under extreme conditions.
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Coil spring suspensions offer more range of suspension movement, and allow the user a wider tuning envelope through the suspension range than leaf springs. Practically all high performance applications use coil springs where possible and if the budget permits.
The two main drawbacks to a coil spring suspension are cost and load-bearing. Cost isn't so much an issue if the vehicle is originally equipped with coil springs, however the retro-fits can be quite expensive and time consuming. Coils are not ordinarily preferred for very heavy vehicles, as the coil on axle setup isn't remotely as stable or strong as a proper leaf spring
This brings us to a conclusion that each of these suspension systems have their applications unique to their functionality and are used accordingly! Leaf springs will usually do an acceptable job and prove themselves a durable choice in the case of heavy, industrial or budget-limited applications; However, there are a very few applications which will benefit from choosing a leaf spring over a coil spring when it's a matter of performance.
A coil spring manufacturer makes many kinds of springs, all with their own advantages and disadvantages. The grouping of coil springs as a whole offers a large range of benefits that make them ideal for use in many industries, from to production to furniture making. If you have the choice between a coil spring and another kind of spring, consider the following advantages of coil springs before making your final decision:
Coil springs are lightweight: Coil springs are surprisingly light for the power they provide. The coiled steel makes the spring stronger than the metal would be if it retained the original straight shape. The heating and coiling process also helps strengthen the metal, making it possible to use less metal to hold larger weights.
Coil springs are inexpensive: Most springs are made from steel and other low-cost metals. These metals are easy to find anywhere, and the cost of the metal is low. Such a small amount of metal goes into each spring, that coil springs are one of the most economical choices for any type of use.
Coil springs are maintenance-free: A coil spring requires no maintenance. You don't have to lubricate the spring, or clean it, or give it special coatings or care for it to work. The only problem that may occur with springs is that they may break on occasion. However, if a coil spring breaks it is an easy matter to fix it.
Coil springs are versatile: There are hundreds of varieties of coil springs that a coil spring manufacturer can create for a variety of different uses. Depending on what you want to use the spring for, you can choose tension springs, compression springs, or torsion springs. Each coil spring provides a unique service to the tool and helps make the job of the tool or machine much easier.
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