Propane and Oxygen

Post questions and info about combustion (flammable vapor) powered launchers here. This includes discussion about fuels, ratios, ignition systems and anything else relevant to launchers powered by igniting things like hairspray or propane.

Postby DanielS » Thu Jun 15, 2006 10:46 pm

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by markfh11q
[br]The threads are reversed, IIRC.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote"> I realized that, but everything still gets all cross threaded when I try to screw on my torch head (in a counter-clockwise direction). Are these threads even compatible? Thanks for the help!
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Postby BewareOfDog » Fri Jun 16, 2006 12:21 am

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote"><b>Originally posted by DanielS</b>
How did you adapt the oxygen tank to standard hose/fittings? Is it one of those red bernzomatic disposable ones? Every time I try to screw a torch head onto one, it won't work. Thanks:)
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
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<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote"><b>Originally posted by markfh11q </b>
The threads are reversed, IIRC.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
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<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote"><b>Originally posted by DanielS</b>
I realized that, <b>but everything still gets all cross threaded when I try to screw on my torch head (in a counter-clockwise direction)</b>. Are these threads even compatible? Thanks for the help!
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
...

<center><img src="http://img.villagephotos.com/p/2003-9/398596/crash2.gif">
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Postby markfh11q » Fri Jun 16, 2006 6:19 am

No. Plus, why do you want pure oxygen to flow forth? I believe we just established above that you can kill yourself...
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Postby Wam Bam » Fri Jun 16, 2006 9:38 am

Hahahahaha Wow thats brilliant Daniel. So ya just screwed it on in there backwards? Funny to me! Actually hilarious to me! You should have just jammed a tent peg in there and held the bottle while smoking a cigarette covered in gasoline

Did you even bother to read the entire thread :?:
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Postby DanielS » Fri Jun 16, 2006 10:32 am

Oh, sorry you guys:oops:. This is for an entirely different purpose than spudguns, I just saw an opportunity to ask a question about something that had been bothering me for a while. Sorry for any confusion. (And yes, I did read the entire thread). Now I feel stupid:mrgreen:.

Edit: Glad I could provide some entertainment:).
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Postby bigred28 » Fri Jun 16, 2006 12:30 pm

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by benstern
[br]<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Wam Bam
[br]Is it safe to mix O2 and propane or O2 and MAPP in a SCH 40 rated gun?
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OMFG!!! I did not know that propane can combust without the presence of O2!! What else do you have to tell us oh enlightened one?
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Omfg!!! You sir, are an asshole.:evil:
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Postby sgort87 » Fri Jun 16, 2006 4:47 pm

So umm, what purpose might this be if it isn't for spud guns?
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Postby pbmann123 » Fri Jun 16, 2006 7:28 pm

im sure his true purpose doesnt comply with forum rules. But it might comply with darwin.
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Postby DanielS » Fri Jun 16, 2006 10:13 pm

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by sgort87
[br]So umm, what purpose might this be if it isn't for spud guns?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

I believe it will comply with forum rules. It will be a cheap oxidizing system,like nitrous,for my go-ped. It may not even work, but I will test it from behind a blast shield before attempting to ride it. Nothing illegal I believe. Feel free to laugh if it sounds stupid, and warn me if I'm missing something important. Thanks! Sorry for the Thread Jacking.
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Postby BewareOfDog » Sat Jun 17, 2006 1:27 am

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote"><b>Originally posted by DanielS</b>

<i>Originally posted by sgort87
So umm, what purpose might this be if it isn't for spud guns?</i>


I believe it will comply with forum rules. It will be a cheap oxidizing system,like nitrous,for my go-ped. It may not even work, but I will test it from behind a blast shield before attempting to ride it. Nothing illegal I believe. Feel free to laugh if it sounds stupid, and warn me if I'm missing something important. Thanks! Sorry for the Thread Jacking.
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DanielS, there's a simple reason that pure oxygen isn't used to boost the power output of an internal combustion engine: It will make the engine burn the fuel at an extremely high temperature.

Nitrous oxide has a cooling effect on the incoming fuel charge, which helps maintain a much lower temperature than would the injection of pure O2.
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