Ladder frame Vehicle frame

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ladder chassis diagonal cross-bracing , lightening holes


so named resemblance ladder, ladder frame 1 of simplest , oldest of designs. consists of 2 symmetrical beams, rails, or channels running length of vehicle, , several transverse cross-members connecting them. seen on vehicles, ladder frame gradually phased out on cars in favor of perimeter frames , unitized body construction. seen on trucks. design offers beam resistance because of continuous rails front rear, poor resistance torsion or warping if simple, perpendicular cross-members used. also, vehicle s overall height greater due floor pan sitting above frame instead of inside it.







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