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Originally Posted by ryan0
What do you think they [B-pillars] are designed for? They are the 'roll bar' for a car with out a roll bar.
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They may help, but think about it: there's a reason race cars built on cars with B-pillars still get roll-bars. The B-pillar's aren't perfect, even in your own second pic, you can see where the pillar went over sideways and let the roof come in partially.
re: the windshield frame:
Your pic about this doesn't show a head anywhere near the frame of the windshield. The head has arced down to where the steering wheel / dashboard is. I think hitting your head on the windshield frame itself would suck, but again I still have airbags, and I don't think the arc of my body straining against any belt system will let me head go simultaneously that far high and forward.
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I'm sorry... i don't get the point.. to just plant you in the seat better?
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Man, this forum sucks at lengthy nested quoting I guess. The point of wanting harnesses at this stage was yes, to plant me in the seat better so my chest isn't moving forward so much on braking, or sliding around on corners. My *** is planted reasonably-well by the aftermarket seat bolsters, but that doesn't do much up top. It's just a night and day difference how connected I feel in the passenger seat of a harnessed car versus the driver's seat of mine.
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Google images for 'nissan Z crash'... would you have rather been wearing a good harness and HANS, or only the OEM stuff because you didn't have a roll bar?
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Well, ideally I'd like the whole world to sense my impending crash and instantly transmute itself to NERF material
I agree that in a non-rollover track accident, I'd be better off with a harness bar, harness, helmet, and HANS than I would be with stock belts and just a helmet. And if I avoid the harnesses on the street (which I would), there'd be no compromise there as well.
However, in the current mostly-stock configuration a track rollover would be pretty survivable all things considered, because the stock system lets my body cave inwards and avoid being destroyed by the roof (3-point belt config, and might still be in the hospital of course). I think with the harness bar instead of a rollover bar, and me strapped in with harnesses, a track rollover would result in my neck easily getting locked into taking way more force than it should, causing a high risk of paralysis or death.
So in order to avoid that fate, I had decided on a 4-point cage to use the harnesses with, thus track rollovers while harnessed aren't so fatal. But then that raises the issue others brought up on the first page: me bashing an un-helmeted head into the nearby rollbar in a street accident.