Double barrel shotgun.

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
warhead052
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Thu Jun 09, 2011 7:55 pm

Ok, heres the deal. I have about $100 to spend, and I really dont want to have to spend THAT much. Heres my plan, getting one of these http://www.thetoyshop.com/Roleplay/Doub ... N290015_gs and then adding in push to connect hoses (made for pneumatics obviously) and then adding an air supply, modding the shells to shoot airsoft bb's and what not, and replacing the main piston with either a much more powerful piston valve or a blow gun. It is going to use a 2"x1' air tank, and that should be enough air at 75 or so psi. I need you guys to help me figure this out, its going to be my first, and its going to be made for a friend, with his cash so he is trusting me not to spend it all. Any help is gladly accepted.
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Crna Legija
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Thu Jun 09, 2011 9:50 pm

looks like you already have it figured out :lol:

but for reals you didn't ask any questions.
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irisher
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Thu Jun 09, 2011 10:24 pm

In order for that to work you will must likely have to make/install a much better seal and locking mechanism or it will likely blow itself to bits. This could cause problems with getting the faces to mate correctly. It would be pretty cool if you get it to work though.
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exotechmaster
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Fri Jun 10, 2011 3:36 am

my mate took the barrels off and choped it a bit and its good fit for his
1.25Lt soda bottle popgun
warhead052
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Fri Jun 10, 2011 8:17 am

Irisher, its mostly going to remain the same as it is now, just modified so it holds and fires more air. I dont this it will blow up though.


Little edit, I was thinking about a co2 inflator, may be a little easier but it will require a new canister every shot right? I suppose I can get a co2 regulator, and some tubing and what not, but that may take a bit of time.
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cammyd32
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Fri Jun 10, 2011 11:12 am

Those guns are not good guns to base things around, the shells are really quite weak and the springs are cocked by a string! yes a thin string that goes through a few pullies that creak every time you cock the gun. I'm not trying to put a spanner in your beautifully formed gears of thought but from experience it will be very hard to work around that shell. :D
warhead052
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Fri Jun 10, 2011 1:44 pm

Cammy, its pretty much as simple as pulling everything out, replacing with your own and done. I am going to try it, and if it fails, well then its time to try my other idea.
warhead052
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Fri Jun 10, 2011 8:16 pm

Sorry for double post, and yes I know of the edit button but I wanted to make sure you guys knew. My friend decided he wants a mortar instead, so thats what I am going to do. Its going to use a 3/4" or 1" QEV with a slide valve, a 1'x1" chamber, and a 2 and 3 inch interchangeable barrel.
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Gun Freak
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Fri Jun 10, 2011 8:36 pm

Ok problem there. Too small chamber, too small valve. Bump up to a 2" piston valve and 2" chamber and you will be golden. Plus the valve can be built for the same price if not less than one of them fancy QEVs.
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warhead052
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Fri Jun 10, 2011 9:10 pm

Well, theres my problem, it cant be that big, and my friend does not have an air compressor so its not like he can charge it up to 175 psi or anything. I have to have it small, and small enough so he does not blast his head off or anything. So yeah. I just ordered the parts, they will be here by monday, but now I have to order a 3" barrel, for tennis balls unless I can find lowes or homedepot to carry them.
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Gun Freak
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Fri Jun 10, 2011 9:38 pm

Tennis balls are 2.5" my friend ;)
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Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
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cammyd32
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Sat Jun 11, 2011 5:34 am

Mortars are epic :D
warhead052
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Sat Jun 11, 2011 8:42 am

They may be, but a bit of wadding and it wont be that bad. Its fine though, because my friend does not have an huge space to fire it, so as long as it makes alot of noises and shoots at least 10 meters he will like it.
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clemsonguy1125
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Sat Jun 11, 2011 9:19 am

If he just wants 10 meters, Id just grab a sprinkler valve.
That is all.
warhead052
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Sat Jun 11, 2011 9:33 am

No, his cousin wants ten meters, he wants 100-200 meters. I said I would try my best. (His cousin does not trust him very much with it, but I do which is why I am building it.)
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