Which is why (when using mogas) the fluorination treatment is so important, and
why I believe the factory level of fluorination may be inadequate. There are
companies who do fluorinate for a fee ( search the archives for info ).
Cheers,
Pete
A239
> On Mar 29, 2014, at 5:22 AM, "Arnold Kr. Hansen" <arno-k@online.no> wrote:
>
>
> Hello everybody interested in this topic,
>
> According to my own experience two phenomenon happened to the HDPE material
> in my tank; it swelled but also became very brittle.
>
> I had to remove the tank in pieces. During that process I observed several
> small cracks in areas, outside bonding areas, that had been subjected to
> bending stresses due to bulging. I could easily make a crack in the material
> with a sharp knife. The material was no longer the tough one I learned to
> know when drilling several small holes to make the hole for the fuel level
> sensor.
>
> Therefore I think this phenomenon is a contributing factor to the cracking
> of the tanks. The swelling will not necessarily lead to an even expansion of
> the tank. Therefore bending stresses in the material can occur without any
> external forces acting. And since the material has become very brittle, it
> can crack and make a leakage.
>
> Best regards
> Arnold Kr. Hansen
> LN ABM
>
> -----Opprinnelig melding-----
> Fra: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] P vegne av spcialeffects
> Sendt: 28. mars 2014 21:42
> Til: europa-list@matronics.com
> Emne: Re: Europa-List: XS Fuel Tank Kiwi Mod
>
>
> Hello stephan. Well I put off bonding in my cockpit module because of this
> very subject as it seemed that quite a few reports of tanks splitting we're
> emerging just as I was about to bond in my tank. I filled my tank with fuel
> for 6 months prior to bonding it in and yes it does swell by quite abit but
> I think this is not only due to fuel getting into the actual material but
> the weight of the fuel. What I gathered from everything I read was that the
> tanks were splitting due to being bonded into the module tight against the
> cockpit wall this giving the tank no we're to swell once filled with fuel. I
> made a cradle for the tank to sit in and bonded that to the cockpit so my
> tank is actually "floating" in place. I will post a few pics later. Hope
> that helps. Frank
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=421209#421209
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