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Can i make a propane system myself?

A place to ask general spud cannon related questions.
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Unread postAuthor: Mihlrad » Wed Jun 28, 2006 9:20 pm

ty but i dont really need the length for your cannon it also doesnt use traditional methods of making a meter, but ty for the input. Can anyone calculate the lengths for a 14" chamber?
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Unread postAuthor: carlbelcher » Thu Jun 29, 2006 6:54 am

A 2" difference is not going to make much of a difference when it comes to your cannon performance. Just make sure you adjust you metering pipe for whichever you choose.

Also check out this regulator from surplus center its only $19.95 with a gauge and all.

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http://www.surpluscenter.com/item.asp?UID=2006062906493039&item=4-1723&catname=air
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Unread postAuthor: Mihlrad » Thu Jun 29, 2006 7:18 am

So... what size pipe should i use length wize and diameter wise... i still dont know lol.
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Unread postAuthor: frogy » Thu Jun 29, 2006 10:04 am

$20 for a reg isn't very cheap... I can get them brand new on ebaY for about $10 + ship

Or at my local Harbor Tool and Freight (I'm not sure if same as Harbor Freight) for $8 + tax and they do at least 300 psi to 0 psi

I'd just find the cheapest pipe and type the Inner Diameter of it into the fuel tool and it tells you how long to use....

If you making your first fuel meter, I'd use a regulator, 2 ball valves, a meter pipe, and a disposable propane head instead of buying a torch head and threading it...

A good regulator setting is 35psi, put this into the Fuel calculator tool
The best researched Propane percentage is 4.2%, put that in also
If you are going to use MAPP all the time put 4.6% in for fuel instead of 4.2%
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Unread postAuthor: Mihlrad » Thu Jun 29, 2006 10:35 am

i still dont know what length of pipe to use :/
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Unread postAuthor: frogy » Thu Jun 29, 2006 11:17 am

What's the size of your chamber" length and diameter, and where do you live because I need your altitude...
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Unread postAuthor: Mihlrad » Thu Jun 29, 2006 11:44 am

i live on long island, i wanna do 12" or 14" inch long 4" diameter, i dont know what would work better 12 or 14, and i was told 4 is better then 3, so i guess im doing 4 bu 12 or 14.
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Unread postAuthor: sgort87 » Thu Jun 29, 2006 11:51 am

Just pick one man! It doesn't matter! :x It's all up to you!
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Unread postAuthor: Mihlrad » Thu Jun 29, 2006 11:52 am

welll i dont know what works better! arrrrgggg. Bah fine just go with 14.... after all bigger is usually better ^^

So, 14 inch long 4 inch diameter chamber.
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Unread postAuthor: Mihlrad » Thu Jun 29, 2006 2:02 pm

can you guys also tell me every piece i will need like the elbow and stuff, i need to make sure i dont need to make a second trip to home depo.
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