tubing centerlines
CLR Radius, topics to include.
single vs double+ shear
Tubing yield strength and bending. Use this to find the balance of where it’s rigid enough to withstand and protect driver but crumples if needed to also protect.
Stress in different applications like on gears, pressure stress in engine like with boost, stress on tubes or metal in general, etc.
String method using a cutout rectangle the same size as your tube diameter, find marks on end, make rub lines too by “sharpie layout fluid.” mark crosshair in center.
An equilateral triangle is geometrically the strongest triangle because force is distributed evenly to all sides, Right angles best as structural trusses. Legs in tension vs compression
Provide tables and the math for finding exactly how much fuel is needed and PSI pressure with injectors and their type etc to calculator power numbers with air psi at rpms etc.
Tubing Continuity, all tube centerlines in a junction meet at the same point. Backing up the apex of a bend. Hail Mary Bars Weakest Points of Roll Cage Triangulation
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Can be used for clocking a tube, finding centerlines, etc.