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Semi Auto

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: saladtossser » Thu Sep 08, 2005 7:10 pm

i'm going to make a knock off of this(seriously) with co2, blowgun and more o-rings, sorry clide but its way too good to pass.
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"whoa... I thought pimpmann was black..."-pyromanic13
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Unread postAuthor: Animal81182 » Tue Nov 01, 2005 10:30 am

man that is an aeusome gun i love how the thing sounds when shot

I really want to make one of these but do think i have the tools to do so you should manufacture the thing you would make a right killing!!!

Animal :twisted:
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Unread postAuthor: Shandora » Tue Nov 01, 2005 12:43 pm

this is truely a marvel i wishi had the skills rto make it without it blowing up in my face
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Unread postAuthor: TalonXxX » Tue Nov 01, 2005 2:29 pm

i just saw this video yesterday... damn! that is one nice cannon! stellar construction, wish I could make one like this! :)
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Unread postAuthor: nth_power » Thu Jan 05, 2006 4:49 pm

absolutely immaculate, the best design concept ever produced!!!
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Unread postAuthor: Atlantis » Mon Jan 09, 2006 7:13 pm

I have an idea for a hopper for you. Get a reducer from whatever size the ammo tee is to something like 6" PVC or something like that. You could angle the hopper over the gun itself towards you for a cool look and to keep it from sticking up in the air.
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Unread postAuthor: clide » Tue Jan 10, 2006 1:52 am

Thanks for the compliments

Adapting a normal hopper to it wasn't too hard. But due to mistakes in the loading mechanism it would blow the balls back up into the hopper and make quite a mess. Adding a few vent holes to the hopper connection could probably fix it, or remaking the loading mechanism to make it more like the animation would probably work well too.

I haven't played with the gun recently due to a lack of paint balls, but if I start playing with it again I'll try and get the hopper working.
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Unread postAuthor: Atlantis » Thu Jan 12, 2006 2:00 pm

What size PVC is the main body of the gun? I might make a bigger version of this using 1.5" PVC/potato shells or those little candles with the metal rim that fit perfectly in 1.5". I need a project that will take a while. I don't know if this would be possible but, make a horizontal clip with a really long spring. If your familiar with the P-90, you'll know what i mean.
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Unread postAuthor: spudshot » Thu Jan 12, 2006 4:30 pm

atlantis, do you mean tea lights? i really doubt they'd shoot well, i'd think they'd just tumble in the air
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Unread postAuthor: Atlantis » Thu Jan 12, 2006 6:47 pm

Maybe thats what there called but yeah they would tumble. Candles would fill a clip nicely though. I can't think of any round objects with a decent weight for a semi-auto. Semi-Automatic Water Balloon Chucker?
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Unread postAuthor: clide » Wed Jan 25, 2006 4:47 pm

The main body is 2" PVC.

As for larger round objects with a decent weight, golf balls or weighted tennis balls.
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Unread postAuthor: Atlantis » Sun Feb 05, 2006 10:43 pm

Does 1.5" SDR sleeve into 2" inch? If it did I would have no problem making a semi-auto GB gun. If I did this, should I upgrade the main body to 3" PVC? Or would 2" still work?
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Unread postAuthor: beebs111 » Mon Feb 06, 2006 4:10 pm

2" sedule 80 to be exact and yes
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Unread postAuthor: Atlantis » Mon Feb 06, 2006 6:38 pm

Thank You. If I can find 2" SCH 80 I'll make this, or if I find other working parts.
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Unread postAuthor: taz22 » Fri Mar 03, 2006 5:16 am

this thing does pwmn man i'm trying to make 1 my self buth a litle diferend, i will try to make it witout the stock my gun wil have a longer barel ore a shorter size.

thnx for the disign of the valve it realy helped me out

buth what is the size of the red part on the slide valve? and is it posible to give it in mili meters?? because i'm from holland and hir we don't use inches

btw this is my design (olmost the same as the one of clide buth 1 diferend

i think it is 32mm (i gues its 1.5 inch) buth i don't know it for shure.
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what is the size in milimeter of the red part???
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