PS... i see from one of the posts that Mogas causes brittleness....so I
infer from this that AvGas does not?
This is relevant because Mogas here is poor quality so I use 100% Avgas
Will
William Daniell
LONGPORT
+57 310 295 0744
On Sat, Mar 29, 2014 at 11:11 AM, William Daniell <
wdaniell.longport@gmail.com> wrote:
> A relevant question while we are on the subject.
>
> My tank dates from 2003. Everything is in and I am planning to close the
> fuselage. I have understood that once filled (except for the comments
> about the aux tank) with fuel it's better to leave the tank full.
>
> However I would like to check the fuel system for two reasons, one to
> check that it all works and the other is that if it does split I am
> thinking that the major surgery will be easier without the top on.
>
> Is it a good idea to do this before closure bearing in mind that it will
> take be another 18 months (ha!) before flying?....or should I just hope f
or
> the best?
>
> thanks
>
> Will
>
> William Daniell
> LONGPORT
> +57 310 295 0744
>
>
> On Sat, Mar 29, 2014 at 6:34 AM, Pete <peterz@zutrasoft.com> wrote:
>
>>
>> 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:
>> >
>> arno-k@online.no>
>> >
>> > 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=E5 vegne av
>> spcialeffects
>> > Sendt: 28. mars 2014 21:42
>> > Til: europa-list@matronics.com
>> > Emne: Re: Europa-List: XS Fuel Tank Kiwi Mod
>> >
>> spcialeffects@aol.com>
>> >
>> > 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 abi
t
>> 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 tha
t
>> 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. Ho
pe
>> > that helps. Frank
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=421209#421209
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
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