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How Does A Sway Bar Work?
Home » Aftermarket Car Parts » How Do Sway Bars Work? » How Does A Sway Bar Work?Normally, without a sway bar when the car corners the weight of the chassis shifts toward the outside of the turn compressing the springs on that side. The springs on the inside generally extend a little, or do nothing. Relatively to the chassis itself, it appears that the outside suspension compresses and the inside doesn't.
A sway bar couples the suspensions on each side to each other, and relative to the chassis. A sway bar effectively increases the spring rate on whichever side is compressed the most. If the sway bar were absolutely solid with no twist so there's a 100% coupling between each side then an attempt to compress one spring actually becomes an attempt to compress both springs. It doubles the spring rate. If the bar has some twist, then it may only increase the spring rate by say 50% on whichever side is compressed the most.
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