Perimeter frame Vehicle frame

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anadol fw11 prototype perimeter frame


similar ladder frame, middle sections of frame rails sit outboard of front , rear rails behind rocker / sill panels. done allow lower floor pan, @ passenger footwells, lower passengers seating height , therefore reduce overall vehicle height in passenger cars. became prevalent design body-on-frame cars in united states, not in rest of world, until uni-body gained popularity. allowed annual model changes introduced in 1950s increase sales, without costly structural changes. of 2014, there no perimeter frame automobiles sold in united states after ford motor company phased out panther platform in 2011, ended perimeter frame passenger car in united states (the chevrolet corvette has used variation of perimeter frame since 1963, fourth generation variant current generation of 2016 has elements of perimeter frame integrated internal endoskeleton serves clamshell).


in addition lowered roof, perimeter frame allows lower seating positions when desirable, , offers better safety in event of side impact. however, design lacks stiffness, because transition areas front center , center rear reduce beam , torsional resistance, hence use of torque boxes, , soft suspension settings.







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