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Sprinkler valve cannon amr-1

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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Sprinkler valve cannon amr-1

Unread postAuthor: beastmode986 » Mon Jun 18, 2012 1:52 pm

AMR-1 anti material rifle 1

well im posting a air cannon finally. video will be up soon but for now here is a pic but first ill give some details.
It has a 3/4in barrel about 4ft long and an air chamber 1 1/2 in in diameter and about 1 1/2 ft long. This design is similar to STUFFBUILDERs and his cannon inspired me to build this so i would like to say thanks to him.


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Unread postAuthor: mattyzip77 » Mon Jun 18, 2012 1:58 pm

cool cannon, however your flow is restricted quite a bit cuz the air has to go around that bend before it reaches the barrel. How many psi do you use and what are you using for ammo??
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Unread postAuthor: 8tonsemi » Mon Jun 18, 2012 2:14 pm

Nice job I like the stock, also I agree with matty your going to flow problems because the bend. Otherwise it looks good I don't see any DWV parts.
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Unread postAuthor: beastmode986 » Mon Jun 18, 2012 2:40 pm

thanks! yeah i knew flow would be restricted a bit but it is still very powerful. on my compressor (120 psi 3hp 5 gallon) i can get around 10 fills to 100psi. At 120 psi it can you some damage ill post pics later i also have a scope on it now. As far as ammo goes i use sockets with sabots or wadding,buckshot,nail darts,bolts,marbles etc.

I do have a question though, Before i made this i had the sprinkler valve with a 1/2in barrel and a fire extinguisher tank.I think it yielded mor power but it would not work as well on smaller diameter barrels. If i make the chamber larger will this be more powerful? Earlier i shot a nail dart at 3/4'' plywood and it almost went through (the tip just barely stuck out the other side). I also have another barrel for it that is for shooting .25 ball bearings and it is pretty dang powerful as well.
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