Construct Chassis with Round Tubing
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What Exactly is a TransAm Race Car? Inside Pancho Weaver's Basement Shop - Where Innovation is King
What happens here
Examine the fabrication of older Trans Am chassis, typically constructed using square tubing, as seen in a 1986 championship-winning ProFab Camaro. Compare this to the new chassis design, which utilizes round tubing. The new round-tube chassis boasts significantly increased torsional stiffness (36,000 lbs to twist 1 degree, compared to 16,000 lbs for square tubing) and is approximately 100 lbs lighter, even without using chromoly steel. This improvement in stiffness and reduction in weight is achieved primarily through the geometric advantages of round tubing.
Goal: Achieve a stiffer and lighter chassis using round tubing.
Tools and materials
- 1986 ProFab Camaro Chassis ProFab — Example of a square-tube chassis
- DOM — Main construction material for the chassis for improved stiffness and reduced weight
- Square Tubing — Older chassis designs, shown for comparison
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