Aftermarket Carbon Fiber hoods crumple zone?
11-09-2005, 07:34 PM
#1
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Aftermarket Carbon Fiber hoods crumple zone?
I know the original Z aluminium hood has specific factory crumple zones that meet official safety standards...
How does the aftermarket "CF" (1 layer cf + fiberglass roflmao) hoods crumple in the event of a crash or they just go straight through the dash and kills the people inside?
How does the aftermarket "CF" (1 layer cf + fiberglass roflmao) hoods crumple in the event of a crash or they just go straight through the dash and kills the people inside?
11-09-2005, 08:03 PM
#3
I have seen two front end wrecks on cars with CF hoods one a supra the other a 240sx I dont know who made them but these guys dont buy the cheap stuff, any event all they did is splittered(sp?) around the middle not quite snapping. The CF hood mounting point for the car bracket cracked but did not snap loose and allow the hood to run into the windshield.
11-09-2005, 08:18 PM
#4
If you look at the hinges on your car, you'll notice these "hook-like" curves on the outsides. Those hooks are meant to "attach" the hinges to the frame, preventing the hood from sliding rear-ward in a frontal impact. The assumption there is that the mounting studs in the stock hood have a greater sheer strength than the the crumple zones have rigidity (i.e. if the mounting studs sheer before the hood crumples, the whole thing is going rearward since those hooks only work if the hood stays attached to the hinges).
That said, I sincerely doubt that the mounts the bolts screw into on my Seibon hood have that same strength and that in a moderate front end crash, the mounts will break out of the hood and the whole thing will come rearward. The only hope is that it goes "up" the windshield before it shatters.
That said, I sincerely doubt that the mounts the bolts screw into on my Seibon hood have that same strength and that in a moderate front end crash, the mounts will break out of the hood and the whole thing will come rearward. The only hope is that it goes "up" the windshield before it shatters.
11-09-2005, 08:25 PM
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Originally Posted by kcobean
If you look at the hinges on your car, you'll notice these "hook-like" curves on the outsides. Those hooks are meant to "attach" the hinges to the frame, preventing the hood from sliding rear-ward in a frontal impact. The assumption there is that the mounting studs in the stock hood have a greater sheer strength than the the crumple zones have rigidity (i.e. if the mounting studs sheer before the hood crumples, the whole thing is going rearward since those hooks only work if the hood stays attached to the hinges).
That said, I sincerely doubt that the mounts the bolts screw into on my Seibon hood have that same strength and that in a moderate front end crash, the mounts will break out of the hood and the whole thing will come rearward. The only hope is that it goes "up" the windshield before it shatters.
That said, I sincerely doubt that the mounts the bolts screw into on my Seibon hood have that same strength and that in a moderate front end crash, the mounts will break out of the hood and the whole thing will come rearward. The only hope is that it goes "up" the windshield before it shatters.
its dangerous...
11-09-2005, 08:30 PM
#6
Originally Posted by jvanquish
then basically...
its dangerous...
its dangerous...
http://www.seibon.com/terms.asp
11-10-2005, 04:15 AM
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i know this isnt exactly on topic but i know a few people with carbon fiber hoods that blew up on the highway because the latch pulled apart from the hood. this was at 100mph+ speeds, but I dont know how much i would trust those mounting points to the hinges. like said above, it might splinter to pieces or sheer from the hinges and hopefully ride up the a-pillars instead of coming through the windshield.
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11-10-2005, 06:26 AM
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"Buyer understands that due to strict U.S. Federal and State safety crash guidelines, Seibon is not responsible or liable for any damages or possible injuries incurred upon possible accidents due to driver error, incorrect installations, bad judgment, or act of nature/God, Allah, Jehovah, etc. All products are intended for off-highway uses only, and should be used for their intended purposes only."
11-10-2005, 06:38 AM
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Originally Posted by izulookn
Not if you dont wreck.
You dont have to wreck but someone can wreck YOU...
(Which i fear most... I never really think that I'd ever wreck since I drive rally style around 24/7 and im concentrated 110%)
I want people who bought the hoods to chime in
11-10-2005, 06:54 AM
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Originally Posted by cessna
Dont do it J.... YOUR GONNA DIE!!! 
when i grow up ...
I want to punch people who make bad quality stuff in the face
seibon, vis and all those ppl r not responsible for the stuff they sell
because obviously its unsafe~
11-10-2005, 06:57 AM
#16
Originally Posted by jvanquish
I want people who bought the hoods to chime in
11-10-2005, 07:01 AM
#17
Originally Posted by jvanquish
when i grow up ...
I want to punch people who make bad quality stuff in the face
seibon, vis and all those ppl r not responsible for the stuff they sell
because obviously its unsafe~
11-10-2005, 09:29 AM
#19
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Originally Posted by jvanquish
when i grow up ...
I want to punch people who make bad quality stuff in the face
seibon, vis and all those ppl r not responsible for the stuff they sell
because obviously its unsafe~
It's like those people that switch out their steering wheel. The stock steering wheel has an airbag, the aftermarket one does not. By switching, they're making things more dangerous for themselves, but that's what they choose to do.
11-10-2005, 09:33 AM
#20
Originally Posted by 2004z
I don't get what your point is. If you think it's unsafe, then don't buy it. Most people realize (at least they should) that a CF hood is not gonna be as strong as the stock one in a crash.
It's like those people that switch out their steering wheel. The stock steering wheel has an airbag, the aftermarket one does not. By switching, they're making things more dangerous for themselves, but that's what they choose to do.
It's like those people that switch out their steering wheel. The stock steering wheel has an airbag, the aftermarket one does not. By switching, they're making things more dangerous for themselves, but that's what they choose to do.