Leaf Springs Rear Suspension System
The leaf springs rear suspension. The oldest and probably simplest suspension system out there.
The leaf springs locate the rear end in the chassis and support the weight of the vehicle. Most all car companies have used them at one time or another. They're still standard on some models today.
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Advantages: It works well, rides well, and is about the cheapest suspension system there is. Many older vehicles are already equipped with them. Hey, no need to re-invent the wheel... It's cheap and easy to update them, and for most street use and some performance driving, they can't be beat...
Disadvantages: Sometimes limited in terms of serious racing. Extreme cornering can lead to some lateral movement, although changing out the bushings to better aftermarket ones will usually cure it. In exteme cases, you can also use a panhard bar or Watt's link to keep the axle from moving side to side.
Sometimes during hard acceleration on the drag strip, the axle can cause the leaf springs to twist into an 'S' shape. As the spring snaps back, it can cause wheel hop. One way to fix this is to use traction or 'slapper' bars. Another method is to use the 'Caltrac' style traction bars. There are a lot of seriously fast cars on the track running leaf springs, so they work well...
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