I didnt weigh but I made a test for comparing strength. Mark, yes it is a
foam core, who in their right mind woudl not put foam in each bay.
I build a section of the fuselage. One bay and covered one with plywood
and one with glass. The plywood snapped before the glass.
Carbon fiber is something I am unfamilar with. I take it carbom fiber
for the same weight is aprox twice as strong as BID? Can someone fill me in
on this one.
Justin
----- Original Message -----
From: "Mark Langford" <n5...@hiwaay.net>
To: "KR builders and pilots" <kr...@mylist.net>
Sent: Monday, June 16, 2003 7:02 AM
Subject: Re: KR>Re: Glass Fuse
> Dan wrote:
>
> > You don't have to wait for time and a situation from which you cannot
> > recover. Why not simulate one of the panels in the fuse covered with
> glass
> > as you state. Weigh it and a piece of the same size plywood.
>
> And when Justin's done that, he needs to make sure that three layers of
> glass are at least equal in strength and stiffness to a layer of plywood,
> which they aren't, especially without a foam core, which he didn't
mention.
> Three layers of glass is awfully flimsy, and there's no way that would
hold
> the sections of something like Dr. Dean's boat together without some
wooden
> structure between the sections, or at least a foam core. Three layers of
> carbon fiber is practically like skinning it in thin steel, but would cost
a
> fortune, and even that would need some sort of structure between
> cross-sections.
>
> The thing that people miss about making these sexy fuselages is that
> finishing them is going to be a nightmare compared to a plywood boat.
> Smoothing the sides of a plywood boat in preparation for paint is a 10
> minute no brainer. Smoothing a totally composite boat made up of
> continously compound curves is going to take months if you want perfection
> in the final finish. But I've got no room to talk about taking the easy
way
> out, I guess...
>
> Mark Langford, Huntsville, AL
> N56ML at hiwaay.net
> see KR2S project N56ML at http://home.hiwaay.net/~langford
>
>
>
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>
