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kind of paintball gun... Updated! v2

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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Unread postAuthor: fretmelter » Wed Feb 13, 2008 9:59 pm

ok then the pressure will make it go forward and fire a ball right?
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Unread postAuthor: stereohead » Thu Feb 14, 2008 1:21 am

Yes!.

Is this design better than the otter one?


/edit:

What pressure do you recommend? (it dont't have to be lethal :wink: )
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 14, 2008 3:02 am

thespeedycicada wrote:it might work but i think the air will just slowly leak out without cycling the valve.
jsr has alot of experience with this phenomenon. :D


Sadly I do, and I suspect it will happen in this case.
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Unread postAuthor: stereohead » Thu Feb 14, 2008 9:04 am

ok, tnx.
So what do you think of my 2th design?
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 14, 2008 10:57 am

stereohead wrote:So what do you think of my 2nd design?


It has a much better chance of working, because you're cutting off the air supply as the bolt moves forward. It's similar in principle to the idea posted here.

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Unread postAuthor: stereohead » Thu Feb 14, 2008 1:51 pm

Hey tnx, that's nice.

How big does the chamber have to be?
And what pressure do i need for just shooting 'not lethal paintballs' ?
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 14, 2008 2:02 pm

How big does the chamber have to be?


at least the same volume as your barrel

And what pressure do i need for just shooting 'not lethal paintballs' ?


you should be fine with 50-75 psi
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Unread postAuthor: Leonard » Thu Feb 14, 2008 8:43 pm

Look likes the semi-auto design i posted a week ago : http://www.spudfiles.com/forums/album_s ... d,361.html

It worked for me, i used a modded sprinkler valve, so it was 2 or 3 seconds before the valve would actuate correcly and the chamber would fill up at about 75 psi. The only way to make a semi-auto mecanism to work faster would be to only use a smal part of the air contained in the chamber.
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