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Re: X Air Hawk fuel tank 'shedding' particles into fuel


 

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Not everyone has a Jabiru engine fitted,?? The Rotax prefers car fuel.

Either way, the fuel tank in the X-Air aircraft is just vinyl ester resins and they are affected eventually by fuels of any description, especially when you have to make it as light and thin as possible.

Best for any fuel still seems to be polyethylene but its heavy.... ? Look at how many outboard motor fuel tanks there are around the world that are left outside day and night, in some and rain and use all sorts of fuels and yet they are still working after 30 years, can't do that with a Fiberglass fuel tank.


Geoffrey Gartshore wrote on 13/04/2022 2:03 pm:
Wouldn’t it be safest just to use only 100 all fuel only, after you have thoroughly cleaned your tank? ??

Mogas has to be carefully sampled every time to ensure No ethanol, which is the problem for fibreglass tanks. ??

While 100 LL can lead to plug fouling if proper mixture management is not employed, ?I never had that problem even with my Jabiru engine that had no manual mixture control. ?The Jabiru engine manual even recommends using ?100 LL for good engine performance and cooling. ? My AME highly recommends using AVgas. ? ? He also says many owners who tout the benefit of their Mogas STC don’t really realize what the STC means. ? You don’t just throw in Mogas and take off. ?The STC requires specific sampling technique prior to a flight for compliance. ? The “devil is in the details “. ??



Geoff Gartshore
Zenith CH200 GCUD
Waterloo, Ontario?

On Apr 12, 2022, at 9:30 PM, Justin Gregoris <jgregoris789@...> wrote:

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Very interesting and valuable information, as usual Michael.

I will keep my eye out.

I noticed my gascolator valve leaking today.

My tank has been completely dry for 3 months. I just put fresh fuel in it and I thought to open the gascolator. Sure enough, it started leaking. Now I understand what those white rabbit like hair particles were.

I did notice these particles in the fuel filter before but now I will clean it more often.

Many thanks!

From: [email protected] <[email protected]> on behalf of Pipistrel Moderator <pipistrel.aircraft@...>
Sent: Tuesday, April 12, 2022 9:25:40 PM
To: [email protected] <[email protected]>
Subject: Re: [XAIR] X Air Hawk fuel tank 'shedding' particles into fuel
?
It honestly depends on the fuel and the additives that are used locally when it is produced.....?? Fuel is not fuel any more..........

I have seen some excessive fuel tanks deteriorate in as little as 12 months from ethanol car fuel. If you have debris inside the fuel tank that is flaking off the best thing to do is drain the fuel tanks, put about 3 feet of chain in the fuel tank and Shake like crazy !?? the chain will break off any of the exposed fibres, you then need to flush the fuel tank as many times as you can to remove the debris and you should be good for another year or two.

Because the debris is normally fibreglass it is almost impossible to see in the fuel filter when it is wet Because it is completely translucent (just like Glass)?? When it dries out however it looks white like rabbit fur or something similar so if you just looking your fuel Filter if it has a glass Shield you may not see that your fuel filter is 90% clogged. It is amazing when you pull the fuel filter apart and the fuel starts to evaporate it looks like all of these fibres are actually growing on the fuel filter as they dry out and become visible.



Geoffrey Gartshore wrote on 13/04/2022 11:20 am:

My XAir tank was whitish, I only used 100 LL , and I never had any debris issues in the Gascolator.?

?

Geoff Gartshore

Zenith CH200 GCUD

Waterloo, Ontario, Canada

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Sent from for Windows 10

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From: Pipistrel Moderator
Sent: April 12, 2022 8:58 PM
To: [email protected]
Subject: Re: [XAIR] X Air Hawk fuel tank 'shedding' particles into fuel

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Justin Gregoris wrote on 13/04/2022 10:39 am:

Hello everyone,

I have read that the x air Hanuman comes with two different types/colours of fuel tanks - one that is capable of running avgas and MoGas with ethanol (yellow-ish tan coloured tank), while the other white-clear tank only accepts avgas. Please correct me if I'm wrong.???? I have not heard this ???

Anyway, I have the yellow-tan tank that can accept both grades if fuel. I don't know if the above information is irrelevant, but after 150hrs of fuel tank use (14yrs since new), I am noticing flakes from the material of the fuel tank.

The only fuel that has been run in this plane is 100LL.?

I notice the fuel filter trapping these particles but why is this happening ????? The resin is leaching (being eaten) away by the fuel additives from the fibreglass and the fibres are breaking off, this is your "debris" most probaby

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With regards, Michael Coates
Pipistrel Aircraft Master Distributor for USA,
Australia & New Zealand

AU +61 7 5522 0583
USA +1 213 984 1237
Slovenia +386 3041 6470

Email: info@...
Web:
Skype: xcomavionics

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Pipistrel Aircraft - Dealer of the year 2012
Winner of the EAA August Raspet Award 2012
Pipistrel Aircraft - Dealer of the year 2017

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--

With regards, Michael Coates
Pipistrel Aircraft Master Distributor for USA,
Australia & New Zealand

AU +61 7 5522 0583
USA +1 213 984 1237
Slovenia +386 3041 6470

Email: info@...
Web:
Skype: xcomavionics


Pipistrel Aircraft - Dealer of the year 2012
Winner of the EAA August Raspet Award 2012
Pipistrel Aircraft - Dealer of the year 2017

--

With regards, Michael Coates
Pipistrel Aircraft Master Distributor for USA,
Australia & New Zealand

AU +61 7 5522 0583
USA +1 213 984 1237
Slovenia +386 3041 6470

Email: info@...
Web:
Skype: xcomavionics


Pipistrel Aircraft - Dealer of the year 2012
Winner of the EAA August Raspet Award 2012
Pipistrel Aircraft - Dealer of the year 2017

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