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break barrel pistol?

Posted: Sun Mar 16, 2008 8:41 pm
by NO_NAME
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/ff28 ... p_2943.jpg" target="_blank"><img src="http://i238.photobucket.com/albums/ff28 ... p_2943.jpg" border="0" alt="Photobucket"></a>






this is the gun almos compleat
<a href="http://s238.photobucket.com/albums/ff28 ... p_2948.jpg" target="_blank"><img src="http://i238.photobucket.com/albums/ff28 ... p_2948.jpg" border="0" alt="Photobucket"></a>





<a href="http://s238.photobucket.com/albums/ff28 ... p_2947.jpg" target="_blank"><img src="http://i238.photobucket.com/albums/ff28 ... p_2947.jpg" border="0" alt="Photobucket"></a>

Posted: Sun Mar 16, 2008 8:47 pm
by Counterstriker
Give it a smaller barrel, since the chamber is about the same size.

Posted: Sun Mar 16, 2008 8:48 pm
by bigbob12345
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

Posted: Sun Mar 16, 2008 8:51 pm
by potatoflinger
It looks good so far, I think you should continue.

Posted: Sun Mar 16, 2008 8:56 pm
by NO_NAME
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

Posted: Sun Mar 16, 2008 10:08 pm
by jon_89
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.

Posted: Mon Mar 17, 2008 5:06 am
by Cosmic Muffin
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?

Posted: Mon Mar 17, 2008 6:13 am
by pizlo
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.

Posted: Mon Mar 17, 2008 8:33 am
by spud=fun
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.

Posted: Mon Mar 17, 2008 9:55 am
by STHORNE
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!

Posted: Mon Mar 17, 2008 10:23 am
by Ragnarok
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.

Posted: Mon Mar 17, 2008 10:24 am
by Carlman
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..

Posted: Mon Mar 17, 2008 1:43 pm
by Gippeto
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?

Posted: Mon Mar 17, 2008 1:50 pm
by pizlo
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.

Posted: Mon Mar 17, 2008 6:39 pm
by OuchProgramme
It could be a rebuilt M203.

Perfect for launching airsoft grenades.