Propane ratio

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SpudFiles Forum Index » Combustion Cannon Discussion » Propane ratio

Propane ratio

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patchystar04

Posted: 10/22/2006 0:39 AM Post subject: Propane ratio

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Joined: 21 Oct 2006
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I have a new gun and I hate cleaning hairspray Sad

so i want to use propane My dad won't trust me with a metered system cuz then the tank is with the gun so i have to do manual injection (welding torch in chamber) so how long would i need to hold the thing in there (in seconds)if my chamber is 3''X13.5'' and the barrel is 1.5''X36'' help would be much appreciated Very Happy

frankrede

Posted: 10/22/2006 15:13 PM Post subject:

Sangheili

Joined: 20 Jul 2006
Posts: 2922
452.47 Spud Bux

About 10 seconds.
Your dad is not thinking right.
You need a ball valve atleast for a direct injection.

MisterSteve124

Posted: 10/22/2006 15:32 PM Post subject:

Colonel

Joined: 11 Feb 2006
Posts: 709
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What he's trying to say is his dad doesn't want the propane tank to be attached to the gun incase his explodes which is reasonable.

patchystar04

Posted: 10/22/2006 17:17 PM Post subject:

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absolutly Mr steve yup after a couple tries i found 6/7 seconds works perfect Way more powerful (and cleaner) than dumb old hairspray
PS i used a camppping type gas thingy and a valve from this little gas grill so if you used a real torch it may be different

boilingleadbath

Posted: 10/22/2006 20:31 PM Post subject:

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I point out that you could build an off-boardp (detached) propane meter... many people have done so, as it can provide services to multiple launchers (thus saving money).

patchystar04

Posted: 10/23/2006 19:19 PM Post subject:

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Joined: 21 Oct 2006
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aahhhh idk this direct inject. works fine and i use it on my mini too so its fine are you talking about the thing with the shrader? valve on it?? i thought of that but don't wanna drill any more on it??? is it worth it ???

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