The first is that these bars generally do not offer what is known as a progressive spring rate. In suspensions with a progressive spring, the coils of the spring are spaced at different distances from each other. This allows the suspension system to enable firm steering, braking and handling, while also providing for a smooth and comfortable ride. Torsion bar suspension systems were once relatively common in passenger vehicles, but today are used primarily for the suspension systems of trucks and sport utility vehicles SUVs.
Some notable automobiles that used this type of suspension were the original Volkswagen Beetle , Porsche , Porsche models that utilized an air-cooled engine, and much of the Chrysler line-up of cars from the late s through the late s. Additionally, adjusting a torsion bars to raise the ride height when the have started to wear will extend their useful lifespan - while maintaining proper ride height that doesn't interfere with alignment and tire wear.
Because torsion bars are mounted low along the vehicle's underside, they can be more likely damaged by speed bumps, debris in the road, and uneven terrain. It's important to visually inspect them for damage in the event they have become bent, scraped or cracked. Sagging ride height is the most common indicator of worn torsion bars, along with a harsher ride quality because the bars lose their range of twist torsion.
If you're ready to review your choices for replacement torsion bars. You can view alternatives for replacement torsion bars under our Torsion Bar Suspension category, we have a range of standard uprated replacements to enhance the vehicles ride for standard height or lifted vehicles. Whether your vehicle uses coil springs, leaf springs or torsion bars or a combination replacing them will bring noticeable "quality-of-life" improvements that you'll feel in your hands and in your seat.
New springs or torsion bars will bring back its handling as the engineers intended it or with a performance improvement. If performance handling is your focus, upgrading your springs will give you the full value out of more bigger wheels, tires, shocks, and other suspension components. If you're replacing other suspension components anyway, it's penny-wise and pound-foolish to keep your worn-out original springs in place. To help guide you through the selection of springs and other suspension components we offer for your vehicle, we have specifically built our website to provide you with a huge selection of choice to fit your Toyota's with detailed descriptions, specifications and fitments on all Toyota Suspension Parts.
Shipping Countries - Click here for more information. Coil Springs Coil springs are made from hardened and tempered steel, wound in a spiral formation. Advantages of Coil Springs Coil springs allow the most flexibility when it comes to variable rate characteristics. Disadvantages of Coil Springs Coil springs aren't as well suited to carrying heavy loads as leaf springs are.
Leaf Springs Leaf springs are literally older than the motor vehicles itself, having been in use since the earliest horse-driven carriages travelling the countryside. Multi-Leaf Springs A single leaf setup typically found on small lightweight cars is known as a "mono leaf" spring, while multiple leaves stacked on top of each other are known as "multi leaf" springs.
Advantages of Leaf Springs Leaf springs are the simplest setup, with the fewest number of moving parts to wear out. Disadvantages of Leaf Springs Axle wind-up can be a problem with leaf springs.
How to Tell When Leaf Springs Are Worn If you feel your leaf springs aren't performing the way they should, check for broken or missing leaves.
Torsion Bars Torsion Bars don't flatten out like a leaf spring or compress like a coil spring. Advantages of Torsion Bars Because torsion bars are very space-efficient and take up much less overall volume, drive axles and other suspension components can be located where other types of springs would be in the way.
Disadvantages of Torsion Bars Because torsion bars are mounted low along the vehicle's underside, they can be more likely damaged by speed bumps, debris in the road, and uneven terrain. How To Tell When Torsion Bar Springs are Worn Sagging ride height is the most common indicator of worn torsion bars, along with a harsher ride quality because the bars lose their range of twist torsion. Posted By: Jack. Category Accessories. Engine Parts. Service Parts. Reviews News Careers Contact.
What is independent torsion bar suspension? Posted on 17th October When the torsion bar is fitted, it should be given ample lubrication on the ends attached to the wheel axles.
Simple maintenance is required — compared to spring suspension, torsion bar suspension does need some looking after to keep it performing as intended. Stability — the individual suspension on each wheel makes for an extremely stable and responsive platform for the van to ride on. Wide-trak chassis — Maxi Mover offer a wide-trak chassis which spreads the weight over a wider area, allowing for better weight distribution and a lower centre of gravity.
Adjustable ride height — the ride height is adjustable by turning the anchor piece on the suspension itself. Torsion bar vs leaf spring suspension Leaf spring suspension technology is older than the automobile or van. Torsion bar vs air suspension Air suspension consists of an air spring, essentially a rubber airbag, which is pumped up via an air compressor.
Generally easy to maintain Easy to maintain Updated technology designed for modern day vehicles. Modern technology Very old technology If you are torn between suspension options, we hope this guide will help you make the best decision for your business. If you have any queries on which suspension best suits your requirements, get in touch with one of our team on Among other cars, several Chrysler models were equipped with such front suspension system.
An interesting advantage of this solution is the fact that the suspension was completely independent. The indisputable advantage of using this type of suspension are the compact dimensions. Thanks to the solution design, the car can have a flat trunk, which significantly improves ergonomics. Despite not so complicated construction or at least compared to the multi-link system , the solution provides good driving characteristics and high comfort.
Most often, the beam with torsion bars is found in Peugeot and Renault vehicles. Interestingly, this solution had its premiere in German production cars. It all started in the s. Unfortunately, the torsion bar beam is not the most durable solution when it comes to the rear suspension.
Remember that it works under a heavy load, and during it is subjected to considerable forces in various directions. The suspension comes into contact with extremely adverse conditions, such as snow and rain, dirt or accumulating moisture. These factors damage the seals, which has a negative effect on the needle bearings inside. This is the most common cause of torsion bar beam failure.
If the failure is not discovered quickly enough, the swingarm mounting pin is damaged and the beam must be regenerated. Side impact are another common cause of the damage. The torsion bar beam is very vulnerable at impacts to the side of the wheel. Such hit often causes the element to warp and the only recipe for repair is to replace the entire beam. In an event of a strong side impact on the vehicle wheel, the mounting point of the beam in the vehicle chassis can be damaged.
In this case, the repair costs may exceed the value of the vehicle. Early diagnosed damage can be repaired at a relatively low cost. The key is to recognize the fault in its initial phase. If the bearing or sealing are the only damaged elements, only those can be replaced which is a lot cheaper than a full torsion beam regeneration.
In this case, repair kits come to the rescue. Depending on the type of beam, they can consist of 3, 4 or more elements. Below are the exemplary repair kits for torsion bars.
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