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90 degree diaphragm?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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90 degree diaphragm?

Unread postAuthor: noname » Sat Sep 02, 2006 9:46 pm

Anyone ever know of anyone building a 90 degree diaphragm cannon? In the diagram I made I know it doesn't show the whole thing but there would be a stock with a 1/2" or 3/4" hose going to a sprinkler at the back or something.

Why? You ask. Because varying from the regular old stuff is fun and sometimes works better.
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Unread postAuthor: singularity » Sat Sep 02, 2006 10:40 pm

well i dout that it would perform better than a normal diaphram becuase of the curves but it should work, cant see why it wouldn't. havent seen anyone else do this though, but it would be an easy wat to add a stock to a coaixl.
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Unread postAuthor: frankrede » Sat Sep 02, 2006 11:08 pm

How does a coax work? Piston or diaphram.
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Unread postAuthor: CS » Sun Sep 03, 2006 2:58 am

<a href="http://www.spudfiles.com/spud_wiki/index.php?title=Co-axial">This will clear things up.
Damb lazy people...</a>

In short, the term 'coaxial' only denotes the configuration of a cannon, not the type of valve being used.
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Unread postAuthor: Benny » Sun Sep 03, 2006 3:40 am

Really dangerous idea man, the diaphram could snap the barrel.
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Join the spudshot forum!!!!!

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Unread postAuthor: MrCrowley » Sun Sep 03, 2006 4:01 am

frankrede wrote:How does a coax work? Piston or diaphram.


you can use both
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Unread postAuthor: rna_duelers » Sun Sep 03, 2006 6:16 am

I think boogie man has a pneumatic using this type of valve and i have seen cut outs of this type of cannon on this site b4 in the how to section,it was a while ago but.
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Unread postAuthor: noname » Sun Sep 03, 2006 12:01 pm

Benny, how would it snap the barrel?
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Unread postAuthor: Brian the brain » Sun Sep 03, 2006 1:13 pm

Helloooowwww
This is the how your regular sprinkler valve works...

Ofcourse it will work, as long as you support the barrel...
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: PVC Arsenal 17 » Sun Sep 03, 2006 5:33 pm

I thought of this ages ago. I wasn't the first one either. Problem is, the elbow inside the tee will restrict flow. And it will one big PITA to make with no special results.

My thread:

http://www.spudfiles.com/forums/viewtop ... 197&#14197
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Unread postAuthor: drac » Sun Sep 03, 2006 5:51 pm

The pressure that the diaphragm exerts on the elbow could casue it to snap, since the pressure is pushing up, instead of away like a normal coax. I don't see a problem with it though.
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Unread postAuthor: SpudStuff » Sun Sep 03, 2006 6:06 pm

Its a co-axial sprinkler valve...

I choose to post this less then a minute later:

-Congrats on your mod-ship drac!!
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Unread postAuthor: drac » Sun Sep 03, 2006 8:04 pm

Thanks, and no, it's not a coax sprinkler valve.. The seat on a sprinkler valve is much more stable, and solid. They're similar in function, but not in construction.
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Unread postAuthor: CS » Sun Sep 03, 2006 8:45 pm

Ive also been interested in designing a valve that would allow a cannon to be inline, while not having a 90 degree bend like on previous T piston valves. I wasnt thinking coaxial specifically since you can just position the piston/ diaphragm on the end of the barrel, but more so for 'inline' cannons. AKA so every cannon using a T piston valve doesnt require that it be over-under.

I recall seeing someone on SpudTech attempt at such a valve were the sealing faces were positioned both at 45 degrees so the chamber and barrel ports would be inline. But as I recall the attempt failed leaking. I would like to see more discussion pertaining to something along the lines of it, since I cant come up with anything that would, perform well - fairly simple - ability to disassemble.
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Unread postAuthor: noname » Sun Sep 03, 2006 9:24 pm

I'm probably just going to go with my mini piston design then.
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