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Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: Shrimphead » Wed Aug 02, 2006 4:18 pm

DWV is a pipe rating that stands for Drain Waste and Vent. If something just has dwv on it and not pw, then it isn't pressure rated. Some of your fittings are dwv.
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Unread postAuthor: singularity » Wed Aug 02, 2006 5:43 pm

crap... which fittings are dwv, i need to replace them
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: beebs111 » Wed Aug 02, 2006 6:30 pm

usually on silencers there are holes drilled on the outside to let the sound waves out, i think thats what he is refering to
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Unread postAuthor: Shrimphead » Thu Aug 03, 2006 12:21 am

The ones that don't say "nsf-pw" on them.
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Unread postAuthor: SpudStuff » Thu Aug 03, 2006 5:32 pm

the ones i listed in my post
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Unread postAuthor: killagorrila99 » Sat Aug 05, 2006 8:06 pm

wow nice gun. i used dwv on my piston cannon and took it up and over 150 psi. u guyz are all insane
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Unread postAuthor: singularity » Sat Aug 05, 2006 8:49 pm

just becuse you took it to 150 that doesnt mean its safe, im still goning to replace the parts.
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

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Unread postAuthor: MrCrowley » Sat Aug 05, 2006 9:10 pm

you took dwv parts to 150psi and your calling us insane? :wink:
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Unread postAuthor: singularity » Tue Aug 08, 2006 2:29 am

well i got that page up the one with the instructions on making it
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: MrCrowley » Tue Aug 08, 2006 2:54 am

im using pipe rated for 173psi and i wont take it pass 100psi.
DWV fittings on a paintball gun should be safe up to 80 but might as well buy new fittings so you can take it higher.
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Unread postAuthor: singularity » Tue Aug 08, 2006 3:05 pm

well i bought pressure fittings and i changed the 3/4" pipe that goes from the chamber to the valve to 1". but i couldn't find a 1 x 1 x 1 Tee fitting at home depot, i evan had my friend go to a home depot and look for one but we couldnt find any, did they stop selling them?
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: PVC Arsenal 17 » Tue Aug 08, 2006 5:36 pm

Brian the brain wrote:To PVC arsenal..
The port that excausts the gas is called "the barrel"


What I'm talking about is the porting (holes) drilled out of the silencer that let absorbed air escape. The barrel is ported to release air into the silencer where it goes through a dampener to decrease the usual "pop" a projectile makes when it's leaving the barrel. So what happens to all the air that got absorbed into the silencer? It escapes! How does it do that? Port holes!

In my comment I pointed out that I did not see any of these holes, therefore, I made the incorrect assumption that it was "mock."


Great name for that gun BTW!
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Unread postAuthor: singularity » Tue Aug 08, 2006 6:40 pm

well in the "silencer" i lightly packed insulation (to dampen some of the sound) so the ir behind the ball is contianed by the volume of the silencer and is released slowly as apposed to without a silencer. basically it lessens the psi behind the painball so there is less noise
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: Flinchy » Thu Aug 10, 2006 12:52 am

i like the look of your gun, its unique in a way. i usually just stick with over under designs and basic ones. im still convinced that a cannon will work better if you keep it as basic as you can. anyways nice job, i wouldn't reck your cannon by replacing everything with DWV fittings, it should be fine, but don't go over 100PSI, EVER. stray away from DWV fittings for future cannons. maybe you'll be able to launch your spuds into the stratosphere with your next one :wink:

-FLINCHY
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Unread postAuthor: MrCrowley » Thu Aug 10, 2006 1:55 am

Simple cannons arn't as good as complicated cannons as complicated ones usally have like piston valves or propane or chuck pumpkins half a mile.but simple cannons are alwayz fun,cheap and never break :D
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