Dear Jos,
you are absolutely right:
I have carefully checked my Cessnas
metal tanks before every flight about 700 times
during 8 (in fact 12) years and never
noticed any water in fuel check.
That means I think high quality fuel and
no condensed water in tanks.
That is of course only in Finland, in my tanks.
But IF there is some water in some reason
in some day, I am sure it is on bottom of the tanks
and so it will come to daddy. Before every flight.
That means I like my drains in my Europa also
(in fact not flying yet).
Humidity here outside just know: 86%
"In winter here we add an extra additive to"
No, WE did not add. Maybe some old Escort owners only.
And those teenagers are doing it only for superstitious.
Normal people just tank and drive.
Thats the way we live, driving and flying.
W/o extras.
Regards, Raimo
PS: something wrong with my wifes coffee?
Raimo M W Toivio
OH-XRT #417
OH-CVK
OH-BLL
37500 Lempaala
Finland
tel + 358 3 3753 777
fax + 358 3 3753 100
gsm + 358 40 590 1450
raimo.toivio@rwm.fi
www.rwm.fi
----- Original Message -----
From: "josok" <josok-e@ukolo.fi>
ubject: Europa-List: RE: Fuel drain modification?
>
> On Raimo's invitation: In my understanding there is a gascolator in the
> Cessna's,
the drain of which is connected to the pulling knob next to the dip stick.
Please let somebody correct this when i am wrong.
> I assume water in fuel has 2 primary sources, the first one being there before
delivery to the tank, and the second one from condensation from humid air in
the tank.How does it get there? High up means lower temperatures, below dew
point,
in the wing tanks, cooling the air on top of the fuel, forming condensation.
To prevent buying contaminated fuel is the outstanding advice to buy fuel
---From a frequently used source. My home airport, efiv, has a very low turnover
of 100LL. But, as i have witnessed, there is a fuel/water separator on the pump,
and that is checked on at least a weekly bases. Sofar i have not seen a single
drop of water in the fuel samples of the club planes! Maybe on busy airports
there is no time to do those checks? A second reason for this absence of
water could be the averagely low humidity we enjoy here. In practice that would
eliminate the second source, condensation. During my training period in Florida,
there was water contamination on about 30% of the
> samples. Believe me, a very high turnover of 100LL! on the airport. And a
> very
high humidity there. In the Europa there is no metal tank and the tank is inside
the relatively warm fuselage so my educated guess is, that the condensation
problem is non existent. I was told the Europa fuel drain mod is a demand
---From the PFA. And since i guess this again is a relic from the metal tanks
only
past, it is maybe not really nessecary. As Graham put it: Those drains fulfull
no other purpose then causing drip. Would (condense) water not be running back
to the lowest point in cruise? That is the tank, not the drain. A gascolator
on the other hand filters even small droplets from the stream, effectively
preventing a water build up in the carburettor bowls. All of the previous is
assuming
the use of 100LL, which is not the Rotax preferred fuel. Mogas contains
water binding additives. That's why water in fuel does not seem to be a problem
in cars. In winter here we add an extra additive to
> 100LL as well as to mogas, because water is bad, but frozen water, in the
> form
of massive ice on fuel drains or in the form of ice crystals blocking filters
and injectors is even worse. My choice: A gascolator, drainable
----------------
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