History and Detail on Solid-Axle Front Suspension
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These drawings illustrate why a Panhard bar is necessary when utilizing cross-steering with a Vega box. As the pitman arm pushes the drag link into the back of the spindle to turn the wheel, it also puts a load on the shackles that hold the spring to the axle and actually tries to push the frame right off the axle laterally. View Related Article
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