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johnwigney(at)alltel.net
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 Posted: Wed May 07, 2008 6:52 am Post subject: Re : Refueling (Rotax) |
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Hi Raimo,
I am sorry to hear that your 912S is unhappy with 100LL. This is a bit
surprising for me as I have always used 100LL from Day 1 with no
problems. First flight was in Dec. 2001 and I now have 590 hours. Only
engine issue in that time has been a broken wire on an ignition system
connector which caused a problem on one magneto.
However, I have always used a fuel additive to prevent lead build up. I
first used TCP http://www.alcorinc.com/fuel-treatment/product-07-07.php
and now use Decalin http://www.decalinchemicals.com/fueladditive.html
additive. I see that TCP has problems with shipping now since the
solvent they use is toxic. TCP and Decalin have the same active
component, Tri Cresyl Phosphate, but Decalin has a benign solvent so it
can be carried in a plane. Decalin can be bought from Aircraft Spruce
http://www.aircraftspruce.com/catalog/appages/Decalin.php . I add 15 ml
of Decalin per 10 US gallons of fuel.
This routine seems to work well. I check the plugs at 50 hours and
change them at 100 hours as per Rotax recommendation; they are always in
good condition with no build up of lead. I also use Valvoline Durablend
10W-40 semi-synthetic oil (approved by Rotax). This oil picks up lead in
suspension and I get no deposit of lead sludge in the oil tank.
I also had problems with fuel coming from the breather vent during
filling. I fixed this by installing a larger diameter vent tube which
tees into the filler neck. The larger vent tube permits full flow
filling without backup. A small diameter tube goes from the filler neck
to the original fuselage top vent.
Hope the weather is warming up nicely for you.
Cheers, John
N262WF, mono XS, 912S
Mooresville, North Carolina
ORIGINAL MESSAGE
/From: "Raimo Toivio" <raimo.toivio(at)rwm.fi>
Subject: Refueling (Rotax)
All The Europa Refuelers,
I do not like to use 100LL (w Rotax).
That makes my engine (912S) unhappy, really.
So - if possible - I carry Mogas to the airfield.
That is not fun. I really hate it, to refuel it.
Same time, I do love to pump Cessna by 100LL.
More unfun is to refuel Europa by *normal* way because
- a canister is heavy to keep up
- it takes a long time to refuel even 60 litres = 3 cans
- it is unsafe for refueler=B4s health to be near when refueling
- there is a possibility [because of the contact between can and plane]
to flame and burn whole Europa and maybe your *whole life work*
- when almost full, it tends to come some fuel out from breathing tube
I think most of the problems are out w attached equipment. As you see
there is also for extra safety a real Europa fuel filter (they are extra
for me because I use one piece solid ones). In my case the fuel pump is
a cheap one - only 1,5 litres /minute - but so there is a good time to
check the plane! The power is taken from the `Jump Start` as in the pic
OR from my Europas EPS (External Power Source).
It took only 10 minutes to make this idea to live in Today.
Raimo
OH-XRT Europa XS Mono #417
The Experimental of The Year 2007
37500 Lempaala
Finland
tel + 358 3 3753 777
fax + 358 3 3753 100
gsm + 358 40 590 1450
raimo.toivio(at)rwm.fi
www.rwm.fi
http://mmniemi.aviation.fi/jami_07/europa//
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raimo.toivio(at)rwm.fi
Guest
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| Posted: Thu May 08, 2008 12:35 pm Post subject: Re : Refueling (Rotax) |
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Hi John
How do you know if you have ALWAYS used 100LL?
OK - "unhappy" was maybe too strong expression.
Anyway - my engineīs sound is much more harsh /coarse w 100LL.
And changeing oils every 25 hrs is annouing.
Typical new carīs oil change interval is about 400 - 500 hrs.
Despite that I do not carry any canister with me. I am too lazy to do that!
That means I use mogas only when refueling in my homebase EFTP.
If landing to any other airport - 100LL goes to the tank.
In my case it is maybe 50-50 and so I am a mixed user and oil changes will be in every 37,5 hrs...
| Quote: | I also had problems with fuel coming from the breather vent during
filling.
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I have learnt to have a feeling just before it comes out.
I can hear like giantīs breathing and then it is time to have a little break.
With my new electric refueling aid no problem any more.
I push the filler tube to the bottom of the tank and that makes the trick.
John, you will have a 1000 hrs cake in the year 2012.
That means more than 125 000 miles behind you - five times around the ball!
The weather just now here in Finland cannot be better.
Kippis and thanks, Raimo
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