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break barrel pistol?

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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break barrel pistol?

Unread postAuthor: NO_NAME » Sun Mar 16, 2008 8:41 pm

this is not compleat yet its just a mock of what it will look like.it will be a break barrel pisol that i load shells into for like air soft or some thing,it will also be powered by a 12gram co2 cartridge.I was wondering if i should continu this design....so tell me what you think.



<a href="http://s238.photobucket.com/albums/ff284/NATE_DUDE/?action=view&current=dcp_2943.jpg" target="_blank"><img src="http://i238.photobucket.com/albums/ff284/NATE_DUDE/dcp_2943.jpg" border="0" alt="Photobucket"></a>






this is the gun almos compleat
<a href="http://s238.photobucket.com/albums/ff284/NATE_DUDE/?action=view&current=dcp_2948.jpg" target="_blank"><img src="http://i238.photobucket.com/albums/ff284/NATE_DUDE/dcp_2948.jpg" border="0" alt="Photobucket"></a>





<a href="http://s238.photobucket.com/albums/ff284/NATE_DUDE/?action=view&current=dcp_2947.jpg" target="_blank"><img src="http://i238.photobucket.com/albums/ff284/NATE_DUDE/dcp_2947.jpg" border="0" alt="Photobucket"></a>
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Last edited by NO_NAME on Sun Mar 23, 2008 12:15 am, edited 1 time in total.
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Unread postAuthor: Counterstriker » Sun Mar 16, 2008 8:47 pm

Give it a smaller barrel, since the chamber is about the same size.
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Unread postAuthor: bigbob12345 » Sun Mar 16, 2008 8:48 pm

I llike it, nice and simple
and counterstriker the longer the barrel he has the better performance he will get up to a certain point that is.
at 100psi a .2:1 ratio is optimum but completely unnesesary
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Last edited by bigbob12345 on Sun Mar 16, 2008 8:52 pm, edited 1 time in total.
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Unread postAuthor: potatoflinger » Sun Mar 16, 2008 8:51 pm

It looks good so far, I think you should continue.
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Unread postAuthor: NO_NAME » Sun Mar 16, 2008 8:56 pm

Counterstriker wrote:Give it a smaller barrel, since the chamber is about the same size.


what i plan on doing is building a air chamber into the stock to give it more air
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Unread postAuthor: jon_89 » Sun Mar 16, 2008 10:08 pm

The first picture looks like some sci fi gun. I would say keep going with the project. I made something similar to this with a one inch chamber and barrel that were both 8 inches long. It was fun to use in the backyard.
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Unread postAuthor: Cosmic Muffin » Mon Mar 17, 2008 5:06 am

looks great. you shood turn the valve upside down and somehow incorporate a blowgun into the grip, cos as we all know, pneumatic actuation is much more efficient than electronically actuated valves. keep the barrel to ma minimum though, as Bigbob said, but mate this thing is a beast :P . how were you thinking of puncturing the cartridge?
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Unread postAuthor: pizlo » Mon Mar 17, 2008 6:13 am

Thats pretty sick, you make me want to try this. flip the sprinkler over and have the blowgun in your handle go get rid of the bulky solenoid. Ask BDB about his breakbarrel.
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Unread postAuthor: spud=fun » Mon Mar 17, 2008 8:33 am

If I'm not mistaken a 12 gram co2 cartridge runs at 1200 psi its a nice design but i would be careful when calculating your chamber volume to get it just right.
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Unread postAuthor: STHORNE » Mon Mar 17, 2008 9:55 am

wow, you did an amazing job with the stock.

Ill give it a 9/10. (could use a smaller caliber barrel and needs a paint job)

other than that, job well done!
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Unread postAuthor: Ragnarok » Mon Mar 17, 2008 10:23 am

spud=fun wrote:If I'm not mistaken a 12 gram co2 cartridge runs at 1200 psi

It's normally closer to 800 psi, but 1200 isn't impossible.

As for the OP: Sweet so far mate - keep at it. I'm quite tempted to make something like that now, but I already have too many projects, so I'm going to have to resist as best I can.
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Unread postAuthor: Carlman » Mon Mar 17, 2008 10:24 am

sthorne wrote:wow, you did an amazing job with the stock.

Ill give it a 9/10. (could use a smaller caliber barrel and needs a paint job)

other than that, job well done!


you do know its not even joined yet right..
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Unread postAuthor: Gippeto » Mon Mar 17, 2008 1:43 pm

Very cool! 8) I like it.

As you are planning to use it for airsoft, I would suggest keeping the barrel short (and muzzle velocity down).
A larger and less efficient chamber should also help increase the noise level. :wink:

Few things scream "Run for your life!" in quite the same way as staring into a big dark hole and hearing an ear shattering blast. :D

You were planning to use regulated co2 weren't you?
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Unread postAuthor: pizlo » Mon Mar 17, 2008 1:50 pm

Yeah C02 will NEVER work unless you have a hose running to the gun, a reg simply cannot fit in there right, and unregged c02 and a sprinkler will not mix. just use air, it wonk take many pump sto get decent pressures.
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Unread postAuthor: OuchProgramme » Mon Mar 17, 2008 6:39 pm

It could be a rebuilt M203.

Perfect for launching airsoft grenades.
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