Quote:
Originally Posted by Fabs
Two different roll bars design may be different for a same diameter for multiple reasons : Pick up points on the arms is an obvious one, but also the length of the central section of the ARB has a big influence as the twist rate / unit length is mainly what we're interested in. And ultimately the length of the ARB arms as we've established that they do indeed bend in our case.
Also don't forget the angle between the ARB arm and the link between it and the wishbone has an influence too.
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And the material the ARB is made from, of course. Two different grades of steel will behave differently, Young's Modulus IIRC.