The tanks are low density polyethylene, I understand. And they shrink back
over time when left empty (but not in my experience by as much as the
initial expansion). Fluoridated tanks may be different.
The Kitfox company understood this problem in 1990.
DMcF
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of andrew cullum
Sent: 06 July 2013 22:53
Subject: Re: Europa-List: Fuel tank question
--> <asc23111964@hotmail.co.uk>
Hi Andrew,
One question,have you filled your fuel tank with a mix of fuels you are
going to
use,and contained the tank with a sturdy wooden frame,and left it for at
least 6 weeks? The poly-propylene apparently expands by about 10 per cent
With the addition of fuel,this was in the old manual,but doesn't appear to
be in the new one. Could it be that tanks that have cracked haven't had this
pre-soaking? As for the cork at the bottom of the fuselage,sounds like a
good idea,I'm sure that Bud can help you out. Best Regards Andy Cullum.
Sent from my iPhone
On 6 Jul 2013, at 20:47, "Andrew Sarangan" <asarangan@gmail.com> wrote:
> --> <asarangan@gmail.com>
>
> After a one year pause, I am getting back into building. I am near the
> stage of bonding the fuel tank into the CM. I read a lot of
> discussions about tank swellings and cracking, so I am a bit
> concerned.
>
> Doing a google search, I came across a fuel tank mod document written
> by Bud Yerly where he suggests using a cork pad in the fuselage to
> support the tank. The details are a bit unclear to me, so I would like
> solicit opinions from anyone who can give me some insights.
>
> Thanks in advance!!
>
>
>
>
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