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AT4

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: frogy » Mon Jun 26, 2006 2:13 pm

WOW!! wrote:Very nice gun, have a few questions, how do you fill it?
Is the air chamber right behinde the sprinkler vavle?
And what are the peises at the end?
Thxs kool gun.


It probably has a schrader, but I'm not sure on that one...

The one peice on the barrel end is called a Flange... I don't know exactly what kind it is just check on google or something, they're commonly on toilets bottom...

That gun is awsome... It looks great and I'm sure it shoots great...
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-FrOgY-

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Unread postAuthor: sapper911 » Mon Jun 26, 2006 11:08 pm

Ok... The compression chamber is beheind the sprinkler valve (3 in pvc) it has a screw in tire valve at the bachk that is how I fill it. The pices are a pipe flange and ruber pipe fiting. just go to home depot and look at the all abs fittings you will see all the parts that are on this gun. Just the outside is abs. all of the internal working parts are pvc.


And the question about the airsoft.. I dont know about the fields, I usuly play in scenario games where there are vehicles, HMMWVs, tracked vehicles, dune buggys, ect.. The only way to take a vehicle out is with something that shoots (mini NERF Vortex Howler footballs) They fit perfectly in a 2' barel my launcher can hit a target acurately at 150feet wuth a flat trajectory. there is a guy that has a howitser, and that damn thing can shoot a nerf vortex over 800feet. I would guess that a mortar tube at the right angle and pressure would do about the same. But (MINI NERF vortex howler footballs) are great, and they have a nasty howling sound when they are flying through the air..
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Unread postAuthor: pneumaticman » Tue Jun 27, 2006 12:01 pm

thatz really cool how it looks so realistic. u said it uses a bike pump for it, wut part of the gun do u hook that up to? and how does the trigger work< u said something about 9v batteries. im confused
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Unread postAuthor: sapper911 » Tue Jun 27, 2006 4:13 pm

ok. The sprinkler normaly runs on 24V for a 250 psi sprinkler line.. It can open fast with one 9V up to 60 psi.. and with two 9V wired in series that makes 18V I can open the valve up to 120 ps


Wireing in series means you take two 9V bateries hook one (+) from one baterie to the( - )of the other.. one baterie will have a(+) open and the other a( - )run the negative wire to any of the wires on the sprinkler valve.
and run the posative through the switch to the other open wire on the valve...Does that answer the question?
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Unread postAuthor: huse_spud » Tue Jun 27, 2006 8:23 pm

modded pnuematics are generally more powerful, but for me they're easier to do than electric actuation.

i'd never figure it out, sapper has skills.

you should mess with chamber fans and all that cool stuff on combustions.
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Unread postAuthor: Alder » Sun Oct 22, 2006 10:52 am

THIS IS SWEET lol

I am assuming your using this for MIL-SIMing am i correct

then you really want the pnumatic operation electronics can get wet and not work and if you wanna be like the real military play rain or shine and if you build this i bet your a hard core player so it only makes sense

also the Real Steal At 4 use a mechanical firing pin because of issues with electronics
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Unread postAuthor: kyle1292 » Sat Nov 04, 2006 11:08 pm

that things sweet!
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Unread postAuthor: GOLDLOKS76 » Sun Nov 05, 2006 10:26 pm

very cool im making 1 2 but with hiar spiry
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Unread postAuthor: POS » Mon Nov 06, 2006 6:02 pm

Man, I just saw this gun. Must sai, it is realy cool. I make one like that some day for sure, but it will be a coaxial then. Veru nice design, very nice finishing touch !!! I like it a lot !!!
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Unread postAuthor: cb4289 » Wed May 16, 2007 1:26 am

that gun is sweet
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Unread postAuthor: chaos » Wed May 16, 2007 1:28 am

plzzzz. dont kick up old topics unless you have a valid question.
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Unread postAuthor: e1337 » Sun Jun 17, 2007 8:32 am

Very nice replica. I like the fact it is all in 4in abs.
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Unread postAuthor: chaos » Sun Jun 17, 2007 9:06 am

chaos wrote:plzzzz. dont kick up old topics unless you have a valid question.


i hate to repeat myself.

not being mean or anything but kicking up topics for no valid question is a real pain in the a$$.
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Unread postAuthor: Boomer_ » Sun Jun 17, 2007 11:27 am

Wow, great job. Looks very authentic, and I'm interested in your airsoft rounds, do tell.
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