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Re: Composite materials strength comparison
By:LeeG
Date: 2/6/2008, 1:34 am
In Response To: Composite materials strength comparison *LINK* (Mike Bielski)

Hi Mike, I've only mady s&g kayaks with 4mm plywood. My $.02 is that if you want maximum strength for minmum weight find ways to use minimum epoxy/glass instead of carbon everywhere. As mentioned previously using 5.7oz carbon will use more epoxy than 6oz glass with a hand layup. It won't be lighter. 6oz glass is already pretty durable so you're basically getting more weight and paying a lot for it.

I think you'd do better with 4oz s-glass and 3.25oz tight weave as needed.

Somewhere out there is a bending test using carbon on wood. You'll be surprised to discover that it failed sooner than 6oz biaxial glass. The properties of wood and carbon are so different that they fail at the boundary. Maybe if the wood was very thin the carbon would come into play.

There's something you can't get around,,to not have cosmetic damage from dings more glass and thicker fill coats hold up over time better than minimal weight saving thicknesses. Once you put all that effort into making that strip hull I'd think there'd be a desire to give it the longest lasting finish.

Messages In This Thread

Strip: Carbon Fiber
Mike Bielski -- 1/26/2008, 12:02 pm
Re: Strip: Carbon Fiber
Bill Hamm -- 1/30/2008, 2:03 am
Composite materials strength comparison *LINK*
Mike Bielski -- 2/4/2008, 8:29 pm
Re: Composite materials strength comparison
Charlie -- 2/6/2008, 12:28 pm
Re: Composite materials strength comparison
Toni V -- 2/7/2008, 2:44 am
Zylon looks impressive!
Brian Nystrom -- 2/6/2008, 6:38 am
Re: Zylon looks impressive!------WebKitFormBoundar
Mike Bielski------WebKitFormBoundaryVSCu9RRcf5g+Of -- 2/6/2008, 8:17 am
Re: Zylon looks impressive!------WebKitFormBoundar
Bill Hamm -- 2/10/2008, 2:56 am
Zylon fabric *LINK*
Dan Caouette (CSFW) -- 2/6/2008, 11:47 am
Re: Composite materials strength comparison
LeeG -- 2/6/2008, 1:34 am
Re: Strip: Carbon Fiber
Mike Bielski -- 1/30/2008, 3:40 pm
Re: Strip: Carbon Fiber
Bill Hamm -- 1/31/2008, 12:55 pm
Re: Strip: Carbon Fiber
Paul G. Jacobson -- 1/31/2008, 3:58 pm
Re: Strip: Carbon Fiber
Bill Hamm -- 2/1/2008, 12:35 am
Re: Strip: Carbon Fiber
Mike Bielski -- 1/31/2008, 1:59 pm
Re: Strip: Carbon Fiber *LINK*
Reg Lake -- 1/31/2008, 3:31 pm
Re: Strip: Carbon Fiber
Paul G. Jacobson -- 1/31/2008, 3:38 pm
Re: Strip: Carbon Fiber
Reg Lake -- 1/31/2008, 4:13 pm
Re: Strip: Carbon Fiber
Bill Hamm -- 2/1/2008, 12:37 am
An essay on tech no log y
Paul G. Jacobson -- 2/1/2008, 2:20 pm
Re: Strip: Carbon Fiber
Paul G. Jacobson -- 1/31/2008, 3:30 pm
Re: Strip: Carbon Fiber
Tom Armstrong -- 1/29/2008, 4:24 pm
Re: Strip: Carbon Fiber *LINK*
Etienne Muller -- 1/29/2008, 11:06 am
Re: Strip: Carbon Fiber
Toni V -- 1/29/2008, 7:40 am
Re: Strip: Carbon Fiber
Mike Savage -- 1/29/2008, 9:36 am
Re: Strip: Carbon Fiber
Toni V -- 1/29/2008, 11:02 am
Carbon vs glass
Sam McFadden -- 1/28/2008, 10:37 pm
Re: Carbon vs glass
Mike Bielski -- 1/28/2008, 11:37 pm
Carbon Fiber or ?
Paul G. Jacobson -- 1/28/2008, 9:36 pm