Whiich is exactly why a mechanical engineer did the load calc's - and yes, you are correct about spike loads, but the Monash University Road Safety Research Unit her in Melbourne are world leaders in accident analysis - Victoria was the first state globally to introduce mandatory fitment and wearing of seat belts and this is a subject very well understood around here.
F16 pilots are usually a lot younger but more importantly, a lot fitter than me, and the conventional wisdom is that a susutained load (greater than 80 millseconds) of 8G will prove fatal to 75% of the normal driving population.
Yes, spike loads of 30-80G can be tolerated by the human body, even in old farts like me, but not for much more than 5-16 milliseconds according to the folk at Monash Uni.
Not wanting to divert from the original post, though .... I will simply say that a full harness wil always be better in any sort of accident on a track than a lap-sash harness, and the bar I;ve fitted is well able to absorb the energy/loads involved.
ALso why I hav ebeen at pains to make sure that fixtures for lap belts are similarly attached to points in the bodyshell that are engineered for the loads.
As I said, these are all installed at the owners risk .. 'nuff said.
RB
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