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Unread postAuthor: Killjoy » Wed Mar 14, 2007 8:57 pm

i never heard about that, but it would kind of make sense becuase all the O2 would be burned around you. Hey BC, is there any rule that would prevent me from posting my own homemade flamethrower on spudfiles? cause if there is i can't seem to find it.
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Unread postAuthor: BC Pneumatics » Wed Mar 14, 2007 8:59 pm

[19:00] BusterGTO69: is it okay for people to post flamethrowers they made on spudfiles?
[19:00] Kyle: ya

Guess So ;)
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Unread postAuthor: Killjoy » Wed Mar 14, 2007 9:04 pm

cool thanks. Hmm guess ill go get some pictures then and post it.
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Unread postAuthor: Boomer_ » Wed Mar 14, 2007 9:22 pm

Yeah, me too I just made one recently, if i dont forget.....
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Unread postAuthor: willarddaniels » Wed Mar 14, 2007 10:58 pm

"I think Donkey Kong was the greatest game ever made..."
"You want some o'this milk, Sideburns?"

[my opinion]
I would use a flammable gas to compress the liquid fuel. Reasons: The pressurized gas doubles as your pilot flame, and it is only volatile in the presence of O2. "Even if a fuel canisters or propellant cylinder is struck by a bullet (as in during war), it is unlikely to explode unless it is an incendiary bullet." - encyclopedia

Using a liquid fuel and a pressurized gas propellant, you can spray up to 50 yards away. This means that most of the burn does not happen in your direct vicinity, thus allowing you to breathe quite normally, with exception to hyperventilation due to adrenaline rush. As stated by others, the closer the flame is, the more of YOUR O2 it will consume. So shoot things that you are not standing next to.
[/my opinion]

Zieg's, BS ... you guys are in cahoots and are just trying to get your post counts higher. Yeah, we're on to your little game! :wink:
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Unread postAuthor: BC Pneumatics » Thu Mar 15, 2007 8:17 am

"BS"... Innocent Typo, or Freudian slip? I'm watching you Willard! ;)
To be honest, if I cared about my post count, I would just have it changed to 1,000,000. (Before anyone asks, no one is getting their post counts changed!)

A bit more on topic.. If a high pressure gas tank was punctured while the flamethrower was in operation, It wouldn't be a stretch to imagine the operator being engulfed in flames.
There are also accounts of men having severe mental breakdowns after seeing a comrade getting burned to death by the fuels of his own tank, but I do not know the circumstances. (Fragments from a grenade, bullet, etc.)
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Unread postAuthor: zeigs spud » Thu Mar 15, 2007 2:09 pm

i'm not saying it is true but the guy from the war said it "sucked" the air from his lungs. i'm guessing from the emmense size of the flame it would literaly suck the air form your lungs trying to get oxygen. kinda like a backdraft, becuase the room with the flame will hold doors shut untill it is opened or burns down.
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Unread postAuthor: Hotwired » Thu Mar 15, 2007 2:50 pm

BC Pneumatics wrote:A bit more on topic.. If a high pressure gas tank was punctured while the flamethrower was in operation, It wouldn't be a stretch to imagine the operator being engulfed in flames.


Films tend to exaggerate how easily flamethrowers ignite. Theres nothing in them that will explode and you'd need an incendiary bullet for a start.

I also want to see proof that anyone used a flammable gas as propellant in a flamethrower. I've been looking around and it's all nitrogen.

The only case that flammable gas is used for propulsion is in non-military flamethrowers used for agricultural stuff with pressurised propane and natural gas.
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Unread postAuthor: spudthug » Thu Mar 15, 2007 3:59 pm

if you were to use propane in a flame thrower as the propellent lets jsut say u would die...and it would only be able to run at like 85 psi max without liquidizing (if im correct propane liquifies at 90 psi at room temp??) so ud be left with a big flammable pile of gas
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: zeigs spud » Thu Mar 15, 2007 4:57 pm

spudthug wrote:if you were to use propane in a flame thrower as the propellent lets jsut say u would die...and it would only be able to run at like 85 psi max without liquidizing (if im correct propane liquifies at 90 psi at room temp??) so ud be left with a big flammable pile of gas


the army has uzed propane before so i'm guessing.....no it doesn't make u die
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Unread postAuthor: BC Pneumatics » Thu Mar 15, 2007 5:09 pm

Spudthug, lets just say to are a moron with no explanation to your logic.
And what the hell is this 'big pile of flammable gas' crap about?

I don't know of any flamethrowers (military) using propane, but I have read a couple descriptions and accounts that talk about butane that was used to pressurize the tanks. (Also, the Germans (and others?) used H2 for a pilot gas in at least two models.)

Hotwired, I am basing this off of NOTHING relating to film. I am just imaging how fast I know compressed gas will leave a punctured container.
An atmosphere enriched with a flammable gas could very easily catch during a battle. (I wouldn't be surprised if this lead to the switch to N2, as well as other things. (maybe the lighter alloy or carbon fiber tanks made weight less of an issue?))
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Unread postAuthor: Hotwired » Thu Mar 15, 2007 6:17 pm

One of the big reasons for inert propulsion gas was to get soldiers to strap it on in the first place.

Soldiers had to have at least a reasonable confidence that a single shot to the tanks on their backs wouldn't turn them into a walking barbecue.

A burst nitro tank at 2000psi would chuck you about but thats better than the potential alternative. Flammable gas ignites a lot more easily than the flammable liquid fuel that was being sprayed.

I read about the H2 pilot flames but I haven't seen the thing about butane .
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Unread postAuthor: BC Pneumatics » Thu Mar 15, 2007 6:43 pm

Try to do a little googling on the subject, i know there are al least a few references out there. If I get a chance I will hop on google to find some, and amazon to see if I can track down the war encyclopedia I read it in. I know the 'howstuffworks' site makes reference to it, but there are some more first hand/higher reliability's references out there.

Even if the propellant was changed from flammable to (or started out as) inert for 'comfortability' reasons, wasn't the topic whether or not it was safe? (Safe assuming no one is shooting at you, of course)

Also, as a small curious side note: Would a HPA tank shot with a high caliber round explosively decompress? (Possibly after flash-freezing the tank) There is a little part of me that thinks it might...
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Unread postAuthor: zeigs spud » Fri Mar 16, 2007 1:56 pm

hmm this calls for the myth busters...if any1 hase a profile on their forums i'd post somthing about flamethrowers being shot and exploding or catching the person completely on fire, grantid it is kinda close to the Jaws myth they did about shooting the bullet at the compressed air can and making it explode killing the shark.. :D
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Unread postAuthor: willarddaniels » Fri Mar 16, 2007 11:01 pm

spudthug wrote:if you were to use propane in a flame thrower as the propellent lets jsut say u would die...and it would only be able to run at like 85 psi max without liquidizing (if im correct propane liquifies at 90 psi at room temp??) so ud be left with a big flammable pile of gas

125 psi @ 70*F
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