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Old 02-16-2010, 05:40 PM   #1
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Default Start with a rollbar



jeez.
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Old 02-16-2010, 05:56 PM   #2
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Did he walk away from that?
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Old 02-16-2010, 05:59 PM   #3
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he looked conscious/making deliberate movements...

ouch
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Old 02-16-2010, 06:01 PM   #4
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Holy **** O_O scary ****.
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Old 02-16-2010, 06:23 PM   #5
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Dibs on steering wheel.
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Old 02-16-2010, 06:23 PM   #6
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Looked like that will buff right out. I am not sure why he did not keep driving. Car seemed upright, and now it had a built in smoke screen.
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Old 02-16-2010, 06:29 PM   #7
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I watched that one over and over a few nights ago. Sort of makes me feel a little safer in my car. Held up better than I expected in a roll over. Of course your skull without a helmet might not do so well.
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Old 02-16-2010, 06:36 PM   #8
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It almost makes you think that a rollbar just isn't enough even though he looks like he faired pretty well. I would like more details.

If you're going to be driving 7/10s or more you really should have a cage in my opinion.
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Old 02-16-2010, 06:38 PM   #9
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If I was going to track a Miata I would for sure want a full cage. I'll probably do one with the LS1 mostly for the stiffness.
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Old 02-16-2010, 06:39 PM   #10
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Isn't this a re-post from the Miata challenge in January?
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Old 02-16-2010, 06:42 PM   #11
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Don't you guys understand? The trip angle and low center of gravity of the Miata means the roof of the car will barely touch the ground in a roll-over.
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Old 02-16-2010, 06:58 PM   #12
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I aint scared, i got a hard head
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Old 02-16-2010, 07:18 PM   #13
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Quote:
Originally Posted by mgeoffriau View Post
Don't you guys understand? The trip angle and low center of gravity of the Miata means the roof of the car will barely touch the ground in a roll-over.
Then where'd the hardtop go?



Oh...sarcasm detected.

I think the low center of gravity would make it worse. Once airborne it would rotate about the CG.
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Old 02-16-2010, 07:29 PM   #14
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I would think low and high center of gravity would be about the same (+/- a half of a roll depending on which). COG in the middle would be the worst since it would have no heavy "end" to stop it.
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Old 02-16-2010, 07:37 PM   #15
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I was saying it would be worse for hitting the roof with a lower center of gravity...but you are right in that a CG that's not in the physical center of the mass usually indicates a higher moment of inertia, which is harder to rotate, yielding less rolls.

He rolled four times though, which was more a function of his speed than anything else. No such thing as clean physics.
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Old 02-16-2010, 09:09 PM   #16
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Yeah, can't really calculate something like that with so many variables. Loose dirt to the side of the track could make it dig in more or less, the tire sidewall height and stiffness, a bug flying in front of the car that you hit...

I'm really surprised it rolled at all though. I guess that little hump/dip I saw did him in.
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Old 02-16-2010, 09:13 PM   #17
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Repost.
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Old 02-16-2010, 10:11 PM   #18
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I have watched that thing over and over and over and it scared me pretty bad. I have a bar (single cross beam from passengers side) and it worried me. Do miata's roll during auto-x on pavement? I've never seen one, but I was curious. I have also been off a road course on wet grass/mud and just slid around and sloshed junk in the windows.

That one really scared be because of how fast it went from sliding to rolling and it didn't seem like there was much reason, but perhaps he made it to some rough ground really quick or cought on the edge of the pavement. I just couldn't tell and am not familiar with that track.

I also don't have a harness yet. His head was playing ping pong in there.
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Old 02-16-2010, 10:12 PM   #19
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Guessing, what speed could he have been doing? Top of 4th gear? Think generally, track prepped cars; what rear end they have? He probably has/had a 6sp.

Just curious.
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Old 02-16-2010, 10:31 PM   #20
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The way he rolled seemed to save him. He stayed towards the inside with his head bent downward. Seemed to have the harnesses in correctly, but who knows. I doubt he was without a roll bar, all the clubs I know wouldn't of let him race otherwise. Crashing sucks no matter what, and as long as his apparent health at the end of the film is indeed as it seems, that video does nothing but boost my confidence in our cars. Double points for using a turbo related word in that last sentence btw.
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