Today's Message Index:
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1. 01:43 AM - AW: Fuel tank (Twellmann, Ralf)
2. 04:44 AM - Re: AW: Fuel tank (Alfred Rosa)
Message 1
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When I started my 2-place project in 1994 I took a jar with avgas and a
jar with mogas and put in small pieces of laminates from the materials
supplied with the kit.
Over the years i refilled the evaporated fuel occasionally.
Now after more than 15 years the samples in the avgas jar do not show
any change or degradation. But on the bottom of the mogas jar you can
see
a lot of small chips and flocs and the parts look somewhat frayed on the
edges.
This gives me the confidence that my epoxy covered tanks work fine
(only) with avgas.
Ralf
________________________________
Von: owner-kis-list-server@matronics.com
[mailto:owner-kis-list-server@matronics.com] Im Auftrag von Scott
Stearns
Gesendet: Mittwoch, 13. Januar 2010 18:51
An: kis-list@matronics.com
Betreff: Re: KIS-List: Fuel tank
Jeffco advertises that it's impervious to avgas. I doubt the epoxy
makers would vow to that.
When I was at Scaled they had done tests of epoxy laminates that had
been sitting in jars of 100LL for years. The final test was at 10 years
if I remember right and there was no reduction in properties. Of course
all epoxies are not excatly the same, but it bodes well.
Ethanol in Mogas is a disatster though.
Scott
--- On Wed, 1/13/10, Alfred Rosa <76papa@dishmail.net> wrote:
From: Alfred Rosa <76papa@dishmail.net>
Subject: Re: KIS-List: Fuel tank
To: kis-list@matronics.com
Date: Wednesday, January 13, 2010, 3:50 AM
Is epoxy impervious to avgas, or is Jeffco better? Can Jeffco
be somehow applied over epoxy in sealed tanks (sloshed maybe)?
Al
On Jan 13, 2010, at 12:13 AM, Scott Stearns wrote:
I used the Jeffco stuff in aircraft spruce. I squeeged in on then
painted on two coats The factory airplanes just squeeged on normal
epoxy. If I did it again I'd probably just use the normal epoxy and
really work it in with a squeege. Maybe add a little flox. The jeffco
stuff does make the insides of the tanks look nice through the fuel cap.
Scott
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Message 2
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Ralf,
You can't ask for a better test than that. Thanks, that puts me at
ease.
Al
On Jan 14, 2010, at 4:41 AM, Twellmann, Ralf wrote:
> When I started my 2-place project in 1994 I took a jar with avgas
> and a jar with mogas and put in small pieces of laminates from the
> materials supplied with the kit.
> Over the years i refilled the evaporated fuel occasionally.
> Now after more than 15 years the samples in the avgas jar do not
> show any change or degradation. But on the bottom of the mogas jar
> you can see
> a lot of small chips and flocs and the parts look somewhat frayed
> on the edges.
> This gives me the confidence that my epoxy covered tanks work fine
> (only) with avgas.
>
> Ralf
>
> Von: owner-kis-list-server@matronics.com [mailto:owner-kis-list-
> server@matronics.com] Im Auftrag von Scott Stearns
> Gesendet: Mittwoch, 13. Januar 2010 18:51
> An: kis-list@matronics.com
> Betreff: Re: KIS-List: Fuel tank
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