Fuel will dissolve all polystyrene products.
You can still use it in your wings. If you wish to have wet wings you can
either use polyurethane foam of made triply sure your tanks have no leaks.
Just for the record, I intend on using this type of polystyrene and
installing fuel tanks (probably aluminium) in my wings.
Cheers.
Pete.
Ballina. Aus.
-------Original Message-------
From: VIRGIL N SALISBURY
List-Post: krnet@list.krnet.org
Date: 08/13/06 21:43:59
To: kr...@mylist.net
Subject: Re: KR> Expanded foam
Will fuel melt this foam ?? Virg
On Sat, 12 Aug 2006 20:22:15 +0200 "AVLEC" <av...@telkomsa.net> writes:
> Take a look at the wings of the Whisper motor glider that I assemble,
> they
> are 100% 24DV polystyrene with a single uni-directional glass spar.
> These
> wings were tested to 10.6G by the designer in front of the CAA
> inspectors
> and thereafter to over 11G to see where it would fail.The test rig
> collapsed
> under the weight of
> all the sandbags before it failed. Although the wing had a few
> ripples in
> the skin
> afterwards, the structural integrity of the wing was still intact.
> the wing
> is made from a series of hotwired cores stuck together with micro
> around the
> premade spar and then glassed over with a 410g +/- 45deg layer glass
> and a
> sacrificial 200g layer at 0/90. No sanding necessary! They are 8
> metres long
> each.
> Regards
> Dene Collett
> KR2SRT builder
> South africa
> Whisper assembler
> See: www.whisperaircraft.com
> mailto: av...@telkomsa.net
> ----- Original Message -----
> From: "Jaco Swanepoel" <jacosw...@yahoo.com>
> To: <kr...@mylist.net>
> Sent: Friday, August 11, 2006 10:06
> Subject: KR> Expanded foam
>
>
> > Hi Guys,
> > When I started building the wings, The EAA inspector on the
> project
> preffered that I use 32DB Polystyrene. It is extremely hard. I had
> it
> pre-cut by the supplier and glued into place. I used a belt sander
> with
> 100grid paper to profile it. That was a huge job. The 32DB does not
> make
> those little balls like normal Polystyrene. It makes dust when
> sanded. I
> could not press a hole in it with my finger. There are some photos
> on my
> website under the wings menu.
> >
> http://www.mykitlog.com/users/index.php?user=jacoswnpl&project=70
> >
> > Regards,
> > Jaco Swanepoel
> > Pretoria
> > South Africa
> > KR2S, ZU-DVP
> >
> >
> > ---------------------------------
> > Stay in the know. Pulse on the new Yahoo.com. Check it out.
> > _______________________________________
> > Search the KRnet Archives at
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> >
>
>
>
> _______________________________________
> Search the KRnet Archives at
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>
Virgil N. Salisbury - AMSOIL
www.lubedealer.com/salisbury
Miami ,Fl
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