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Eggbert

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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Eggbert

Unread postAuthor: awkward poop » Thu Jul 16, 2009 1:46 am

This is eggbert the 1/2 inch piston valved gun. it has a barrel diameter of 7.1mm (an arrow shaft) and is made of brass and galvanized steel. It
has a spring behind the piston and the piston is made out of the white plastic tube from dry fire extinguishers, the sealing face is some clear vinyl tube from an old aquarium project.

Tis supposed to be semi but i am only left with a tiny bit of air after one shot.

been shooting it at 120 psi because i have had to use a 12v compressor because the big compressor needs a new fitting =(.
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need another hose clamp to replace the cable ties
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Unread postAuthor: theBOOM » Thu Jul 16, 2009 1:54 am

Wow man nice LOVE the gun ... nice ghetto looking site... Very cool looking silencer 8) does it work or is it for looks.. if it does how did you build it? Also is that chalk or like white marker or is that white spraypaint looks VERY cool man :D
Also what type of arrow shaft did you use for your barrel.. I have arrow shafts and they fit a 6 mm bb pretty well..but they are made of some WEIRD material... :P ..
What type of speed are you getting with this gun?
Also very nice stock looks pretty comfortable :D

It would be awesome if you can get the semi working that would make a KILLER gun! :twisted:
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Unread postAuthor: awkward poop » Thu Jul 16, 2009 3:22 am

nah the paint is just regular water based white house paint. The arrow though i have no idea, its an aluminum one. It used to have some writing on it but that seems to have disappeared :o
i'll look for some tomorrow and tell ya what it says. as for the silencer it works enough to reduce the echo it used to make, to a suitable level. i just cut heaps of slits out of the barrel than wrapped electrical tape around the barrel till the silencer fits nice and snug and filled it with roofing insulation than did the same on the other end.

Speed i have no idea probably nothing that much wouldnt have a clue as i don't own a chrono. or use ggdt.
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Unread postAuthor: POLAND_SPUD » Thu Jul 16, 2009 3:44 am

great work... one of the best I've seen for quite a long time..

lol I really like that custom tactical scope
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Unread postAuthor: suburban spudgunner » Thu Jul 16, 2009 11:41 am

Damn. That's a nice gun.

I like the paintjob on the stock.

Any chance of a video?
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Unread postAuthor: far_cry » Thu Jul 16, 2009 12:14 pm

this is a hell of a air gun
and 7.1 mm barrel . small bore for small ammo .i love it
my gun that i almost finished is a 8mm great barrel for screws fit nice there.
try higher pressures and use a smaller chamber it is too big

i love the sight too :D :D
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Unread postAuthor: awkward poop » Fri Jul 17, 2009 2:33 am

well i had a look at the arrows for ya BOOM, this is what they say on the shaft- AL 7001 - T6 2114 redzone by A.A.T. probably not much help.

Edit- o yeh the sight is made out of the same rod as the silencer and i just crossed some red fishing line at the front :D
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