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What are th pro's and cons bewteen these two when it comes to hoods, I see fier glass is cheaper, but is it not a good as carbon fiber then?
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Fiberglass weighs more, both are prone to cracking (meaning they can crack)...carbon fiber is a more expensive mterial so it costs more, and people like carbon fiber as well (no idea why). Another thing to thinkabout is paint. if your just going to paint to match, is the cf worth the extra weight savings or not.
ill let someone else talk about strength between the two...
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Carbon fiber is a great material. It can be used for structual members of a car, where fiberglass cannot. If you're building a car for competition, the weight savings can be significant. However, it is more expensive. Because carbon fiber is a bit exotic, having a clearcoated carbon fiber hood is a way to show off.
If you're going for fast, obviously lighter is better. But for most applications, the stock steel hood is just fine. It's a real amount of weight off the front end, but nothing you'd notice on the street.
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if it were me and i was going to buy a hood. i would buy a carbon fiber one. only because they seem to have less of a cracking issue. dont get me wrong they BOTH CRACK just CF seems to hold up better. if its color your worried about i know they do make it in different shades. however it is not all one color.
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Originally posted by skifast87:
if it were me and i was going to buy a hood. i would buy a carbon fiber one. only because they seem to have less of a cracking issue. dont get me wrong they BOTH CRACK just CF seems to hold up better. if its color your worried about i know they do make it in different shades. however it is not all one color.
carbon fiber is in such short supply now that your paying enough of a price premium just for the regular stuff, once you start getting into the color weaves or metalics the price absolutely skyrockets.
about cracking. I dont know alot about how carbon fiber car parts are fabricated but I have made 2 carbon fiber boat hulls. That 4x4 weave carbon fiber you are use to seeing used for hoods is probably part of the reason for cracking... it is purely used for astetics [as opposed to other varieties. although I am unsure if they just use it for the top layer or if all ply's are weaves]. The plain-jane twill is the material that should be used for hoods. it is noticibly lighter and stronger [but very ugly]. the weave stuff is what you would typically use for highly contoured shapes [not generally flat areas].
also for our hulls we would include one or 2 layers of kevlar, which was primarily used to help prevent hull punctures. which in our unscientific testing, held up much better to damage. if you are really worried about cracking, you should be able to ask for a layer of kevlar to be added because it doesnt change the fabrication process.
[I also want to add that I think the CF hoods availible are BS, 12 pounds for a hood is way too much for the square footage. my last hull weighed in at 20 pounds for a 17' long enclosed hull, which included the cockpit and my seat]
yes... I am a cougar owner trolling on your board.
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First hand welcome fellow Illinoisian! AHAHHAHA
Like stated above it all depends on what you are looking for. I would go with the CF caues it is lighter and I believe to be stronger. Also make sure you get a good quality CF hood. When shopping for CF hoods look for the edges to be ROLLED with CF. They are alot of cheap CF hoods out there so make sure you do your research.
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I oculd deal with an ugly CF hood. I'd rather paint it anyway. Do I smell a group buy??
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Originally posted by Tourgasm:
Do I smell a group buy??
No
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Brensenvill, Is it much cheaper to do "plain jane" Carbon fiber? Would most CF parts companies have the means to do it? I would think being really concerned about the asthetics of CF would account for most of the high price.
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Originally posted by Tourgasm:
Brensenvill, Is it much cheaper to do "plain jane" Carbon fiber? Would most CF parts companies have the means to do it? I would think being really concerned about the asthetics of CF would account for most of the high price.
I have no idea what the costs are for CF. We had several 12ft rolls, so it was basically an unlimited supply. But I was always given the impression that the standard twill was a good bit cheaper than the weave stuff.
like I said, I only know boats. I have no clue how they fabricate the hoods [although I know how _I_ would fabricate them]. The way I was taught to do it is incredibly labor intensive and I would highly doubt that commercially they are made the same way.
about doing a group buy. no way. First off, I own a cougar so if I did, it would be cougar parts. 2nd, I no longer have access to my workshop where we made our boats [so I no longer have the equipment or the free carbon fiber]. 3rd, I dont have the space to fabricate or store the rather bulky molds I would have to make. 4th, I just dont like dealing with people, I'm an engineer for christ sake.
yes... I am a cougar owner trolling on your board.
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