Buick Grand National Steering Box Build - Straight Arrow
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The torsion bar senses the force between the wheels and the driver's hands and allows power assist if there's enough force or road feel. Increasing the diameter of the torsion bar makes it harder to twist, so the driver feels more road-going forces in the wheel before the power assist comes in. The 0.210-inch through 0.285-inch bars are shown front to back in the picture and will generate about 30 lb-in to over 80 lb-in, respectively, of steering effort when installed in a gear. View Related Article
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