Has anyone considered in which direction the bumper and pod bars may flex?
Firstly, pod bars. The way they're mounted now, I fail to see how they could ever be flexed at all. For those to flex, a 500mm ish length of 30-32mm tube in parts of the chassis that shouldn't flex relative to each other, would have to flex by such a degree that it's highly unlikely to be flexed at all, let alone contribute to stiffness. Even more unlikely when you consider the direction the flex would likely be, the way they're mounted and the material they're made from.
In the case of rear bumpers, I also agree with Traxtar and Itpro. Look at the way they're mounted, the material they're made from and the likely direction of flex. I don't see how they can contribute anything to stiffness. Remember, mounted about 6-12 inches further forward is a 3mm thick, 50mm diameter axle, the rear chassis cross member (30-32mm diameter) and possibly also a torsion bar.
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