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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Exploding gas tank
11-08-2005 05:45 PM  14 years ago
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CXD

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Norway

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Exploding gas tank
Hi.
i was wondering if there is likely that the gas tank kan explode.
my mom don`t like that i have my heli on my room with gas on the tank ,
so i thought i will ask you guys .
is there likely, with little gas on the tank that it will suddenly burst innto flames.
i be glad to get some answers so i can show my mom.
Cheers
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11-08-2005 05:48 PM  14 years ago
RobRoy

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Huntsville, Alabama

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Not unless it is exposed to high heat or flame from somewhere. That being said, I would suggest you not store your heli with fuel in the tanks, it will speed the deterioration of your fuel lines and could help promote corrosion in your engine.Ignorance is curable, stupidity is for life.
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11-08-2005 05:50 PM  14 years ago
Rui_JC

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Portugal

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You shouldnt leave any gas on the tanks.
Not because it's dangerous but because that fuel looses it's properties.
Always remove the fuel from the heli's tanks.

But if you leave fuel in them, there is no problem related with that.
Sometimes i leave a bit of fuel for a week in my tank and i have my heli im my office room.

I dont know of any case of explosion ( if you do not ignite )

one question:
Do you usualy make fire near your heli or somoke on it?
No? Ok, no problem

cheers
Keep it up...literally
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11-08-2005 05:53 PM  14 years ago
CXD

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Norway

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No i don`t smoke or making fire near my heli!
Hmmm unless my big sister does hehe but i don`t think so
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11-08-2005 05:56 PM  14 years ago
Vitya

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North York, Ontario

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Even if you have a source of flame nearby there isn't any chance anything will explode as its sealed. If there is a leak or a hole maybe then you might have a short burst of burning fuel, however this is the fine mixture which is mostly air, you will find there is insufficient oxygen to sustain a burn in a closed space so you really have nothing to worry about.
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11-08-2005 05:56 PM  14 years ago
Rui_JC

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Portugal

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Ok so dont worry about it,

But keep this in mind,

leaving the fuel inside the tank is not good to the fuel it self and fuel lines ( as RobRoy well sayd ).

cheers
Keep it up...literally
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11-08-2005 05:56 PM  14 years ago
CXD

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and i don`t store fuel on the tank for more than over the night.
i usualy fly every day
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11-08-2005 05:59 PM  14 years ago
Rui_JC

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Portugal

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Lucky you flying every day...

i wish i have that luck

cheers
Keep it up...literally
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11-08-2005 06:02 PM  14 years ago
CXD

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Norway

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i fly when i is done at school. i just love burning a thank every day
why cant you fly every day
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11-08-2005 06:05 PM  14 years ago
Vance

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York ,PA

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I thougt that it was the exhaust residue that caused the fuel tank lines to deteriorate? If that were true, keeping your tank filled while in storage would actually prolong the life of your fuel tank lines. Of course it wouldn't be good for the fuel itself.
Someone posted a long time ago the specifics required to ignite the fuel we use in our heli's. I recall it being pretty safe to keep inside your house. Do a search if you require specifics.
Vince D
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11-08-2005 07:16 PM  14 years ago
PaulJC

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Hertfordshire UK

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I thougt that it was the exhaust residue that caused the fuel tank lines to deteriorate? If that were true, keeping your tank filled while in storage would actually prolong the life of your fuel tank lines.
Its exhaust residue and the nitro content of fuel that cause the deteriation of the fuel lines.
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11-08-2005 07:26 PM  14 years ago
Vance

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York ,PA

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I'm too lazy to search but I recall many people saying that their fuel jugs have fuel line immersed in their fuel all the time. They also said that these fuel lines last for years without deterioration. The consensus was that the exhaust resdue is what causes the fuel tank lines to deteriorate.
Vince D
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11-08-2005 09:26 PM  14 years ago
Gearhead

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Vt

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I can tell you this~ your playing with fire !!
see the vid in the link to see just what a little nitro can do...

http://runryder.com/t190163p1/?highlight=fun+with+nitro

Jim
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11-08-2005 09:47 PM  14 years ago
Coloradoheli3d

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Colorado USA

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Its not the Nitro that’s that is flammable, its the alcohol, nitro is only more flammable under pressure. That’s why Top fuel cars have blowers, to put the compression way upthere. The more Nitro, more compression more HP. But an empty tank the fumes are what go boom.
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11-08-2005 10:02 PM  14 years ago
zoom boy

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N.E. Lincolnshire UK

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The consensus was that the exhaust resdue is what causes the fuel tank lines to deteriorate.
So if the lines are kept in fuel (full tank) then that keeps them away from the exhaust residue particles in the air in the tank if it where empty.
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11-08-2005 10:30 PM  14 years ago
FLYINFOOL

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Cudahy, WI

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I always leave fuel in my tank.
The only line that goes bad for me is the muffler line.
When the fuel burns in the engine it makes nitric acid.
The nitric acid is what makes the lines go bad.
As Vinve put it, The line in my fuel jug is 7 or 8 years old and as good as new.
I have never been able to notice any difference between the first flight of the day with the fuel that was left in the tank and the next tank of "fresh" fuel.

Unless you keep throwing lit matches at the heli in your room there is no danger from the fuel. Tell mom its OK.
Jeff Borowski
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11-08-2005 11:33 PM  14 years ago
Yug

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UK. Herts

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FLYINFOOL
Well said. this is why I dislike pressurising the fuel systems with muffler pressure. Eats clunk lines rather. I'm happy now i've moved to a crank pressure system on my 90
I would also say that the fuel line in my fuel bottles lasts and lasts - pure fuel is OK. However, I never leave fuel in the tanks mainly because it is hydroscopic and hence deteriorates.
On the original topic of explosion, most of my life is spent working in my shed, loads of electronic gear and computers etc, plus many batteries (Pb, NiMh, NiCad, Li-Ion and Lipos) which are kept in a fireproof steel box, plus many gallons of Magnum30 and up until last weekend, loads of fireworks. I am a heavy SMOKER and have never considered there to be a risk. I suppose if this shed did go off, I'd never know about it
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11-08-2005 11:50 PM  14 years ago
zoom boy

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N.E. Lincolnshire UK

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I never leave fuel in the tanks mainly because it is hydroscopic and hence deteriorates.
What about if you make sure the carb is closed and the exhaust is bunged up?
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11-08-2005 11:57 PM  14 years ago
PaulJC

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Hertfordshire UK

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If you've got a uniflow fuel system then you would already have fuel shut offs on carb and exh pressure line, just close these off and its a closed container.
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11-08-2005 11:58 PM  14 years ago
Yug

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UK. Herts

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Yeah that helps to stop rusty bearings. I think the greater cause of rust is leaving fuel in the engine so after a session, I turn it over till it won't start plus a couple of seconds extra.
Usually dunk the heli in the river to clean it off
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