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Mark / Bill,
It's been a while since I researched this but
the high strength epoxy Europa uses to bond wing skins etc. was a premo
product, but I unsure about how it stands up to alcohol.
Anyone have some info on that?
George (down under)
Bill,
My big concern is the bond joint attaching the wing skin to the
spar and ribs. Lancair uses Hysol to bond the honeycomb skin to the ribs
during closeout and there is no way to seal the Hysol off from the
fuel. I have seen pictures of where ethanol had attacked
the Hysol. I don't know how long it took or how it was
corrected. So, my main concern is with the Hysol adhesive, not
the Jeffco 9700.
Mark
On 8/14/08, Bill
Schertz <wschertz@comcast.net> wrote:
The
Jeffco 9700 FCR data sheet showed that it is supposed to be compatible with
gas/alcohol mixes. One of my fellow builders tested some samples with
Jeffco coatings, and Aeropoxy in a mix of gas/15%Alcohol. The Jeffco
coating was intact after the soaking, *but* it did swell some. The Aeropoxy
flaked off .
So, any pinholes in the Jeffco, and the underlying
aeropoxy would be attacked, leading to a sequential failure as the
underlying epoxy was attacked.
Bill Schertz
KIS Cruiser
#4045
N343BS
----- Original Message ----- From: "Charlie England"
<ceengland@bellsouth.net>
To: "Rotary motors in
aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, August
13, 2008 1:26 PM
Subject: [FlyRotary] Re: Tank problem with Mogas vs
fouled spark plugs
Bill,
Do
you still have the container of sealer? If so, why not just look up the
product's data sheet or call the manufacturer to see if it's safe for
alcohol? IIRC, the stuff that Van has sold in recent years (Flamemaster
brand) is alcohol safe. At least, the stuff they shipped to me was. A
bigger concern if you used any old aviation style items like gascolators,
is the likelihood of natural rubber gaskets in
them.
--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html
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