Jeff and Co,
I made a fibreglass skateboard top as a 15 year old with numerous layers of
glass. I think it might have topped a dozen, no, probably more, but when I
stood on it, it became a banana. Same basic concept, composites derive most
of their strength with 2 skins spaced apart about an inert core medium that
allows the specific properties of compression and tension to oppose each
other under load. Use half the glass, a bit of ply and "Bobs your uncle",
OR, forget the composite and go for aluminium. Basically, forget glass on
its own.
Reg
Tony Renshaw
Sydney Australia
At 04:15 AM 4/28/2004, you wrote:
>
>
>So would that mean 3MM aluminum is stonger and that 4 or 5 layers of flat
>glass bid would not work for this aplication?
>
>Jeff
>
> >
> > Actually the flat faces on the panel are NOT just epoxy-glass - the
> strength
> > comes from a piece of 1/8 inch / 3 mm plywood sandwiched between the glass
> > layers.
> >
> >
> > Best regards,
> >
> > Rob Housman
> > Europa XS Tri-Gear A070
> > Airframe complete
> > Irvine, CA
> >
> > -----Original Message-----
> > From: owner-europa-list-server@matronics.com
> > [mailto:owner-europa-list-server@matronics.com]On Behalf Of Jeff Roberts
> > To: europa-list@matronics.com
> > Subject: Re: Europa-List: panel material
> >
> >
> > on 4/26/04 8:12 PM, Robert Berube at bberube@tampabay.rr.com wrote:
> >
> >
> > Quick question on this topic. Since the original panel was designed using
> > fiberglass why not lay up some ply's to make the bolt on panel out of it.
> > Seams as though it would be easier for a homebuilder to work with. If
> so how
> > many layers are enough for strength for say the usual 6 pack?
> >
> > Jeff
> > A258
> >
> >
> > <bberube@tampabay.rr.com>
> >>
> >> Paul,
> >> All the panels we make and have made by Aerotronics, Gulf Coast Avionics,
> >> Etc. are made with .063 Aluminum, 2024 or 6061 generally. Other alloys
> > can
> >> certainly be used.
> >>
> >> Bob
> >> Flight Crafters
> >>
> >
>
>
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