Kevlar VS Fiberglass
11-21-2003, 08:14 AM
#21
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Below is a chart illustrating the manner which each material behaves when loaded.
The fiberglass is blue, Kevlar is magenta and carbon is yellow.
Note how the glass and carbon reach their peak load and then simply fracture. The kevlar begins to go elastic early and develops load gradually; the initial stiffness(slope of the line) is greater than glass however.
The fiberglass is blue, Kevlar is magenta and carbon is yellow.
Note how the glass and carbon reach their peak load and then simply fracture. The kevlar begins to go elastic early and develops load gradually; the initial stiffness(slope of the line) is greater than glass however.
11-22-2003, 08:08 AM
#23
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"Kevlar 49"
"Kevlar 49" as it was first known did not come out untill the mid/late 1970's. Often on this board we see boats claiming to be constructed of Kevlar-and they are not! Byer beware.
11-25-2003, 12:33 PM
#25
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Re: "Kevlar 49"
Originally posted by Robert Geoghegan
"Kevlar 49" as it was first known did not come out untill the mid/late 1970's. Often on this board we see boats claiming to be constructed of Kevlar-and they are not! Byer beware.
"Kevlar 49" as it was first known did not come out untill the mid/late 1970's. Often on this board we see boats claiming to be constructed of Kevlar-and they are not! Byer beware.
11-25-2003, 01:42 PM
#26
artselectricinc.com
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I have a 42' Harley that is constructed of Kevlar with foam coring. I have beat this boat hard without one stress crack anywhere. I have to say this is the toughest boat I have owned. It weighs in at 14,000 lbs dry. I think that that is pretty good for a boat this size.
It is fully loaded with gen set, teak cabin, etc etc. Still can get a honest 50 mph with a couple of high time 410hp 502's. I don't think this would be possible if it was made of glass.
It is fully loaded with gen set, teak cabin, etc etc. Still can get a honest 50 mph with a couple of high time 410hp 502's. I don't think this would be possible if it was made of glass.
11-25-2003, 11:02 PM
#27
speel chekk this fokker!
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Pardon me, while I whip this out!
Pardon me, while I whip this out!
11-26-2003, 01:38 PM
#28
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I stand by what I stated! Kevlar was not used in boats untill the mid/late 1970's. Perhaps Brownie can help with this?
www.carbon-fiber.net/aramid_comp.html
The second paragraph, "Kevlar was developed in the 1970's..."
I also had a 1967 28' Magnum Race boat, Aronows original "Maltese Magnum". This boat is fiberglass. Why wouldn't they have made Aronow's boat out of "kevlar" if it was available? According to Rich Powers-they only used "polyester resin" (with fiberglass) back then.
www.carbon-fiber.net/aramid_comp.html
The second paragraph, "Kevlar was developed in the 1970's..."
I also had a 1967 28' Magnum Race boat, Aronows original "Maltese Magnum". This boat is fiberglass. Why wouldn't they have made Aronow's boat out of "kevlar" if it was available? According to Rich Powers-they only used "polyester resin" (with fiberglass) back then.
Last edited by Fast Shafts; 11-26-2003 at 01:51 PM.
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