3-Link Build

[Norm Peterson]

It took me a little searching to find it, but there seems to be some consensus with respect to a "3/4/5 rule", where



3G's is in the lateral direction
4G's is in the longitudinal direction
5G's is in the normal direction...

Those figures are taken at the contact patch(es) and account for impact loading, so for a PHB the main consideration is the 3g's laterally. The other two directions wouldn't see much more load than the 4 or 5 factor times the weight of the PHB itself and could probably be neglected.


Edit - that does not keep you from using a slightly higher figure to account for fatigue, particularly if it is not a race car that gets regular inspection & maintenance. In fact, a race car without much aero downforce and restricted to [relatively smooth] paved tracks can get away with using slightly lower numbers than 3/4/5.


Norm