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pistonvalved copper gun

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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what do you think of it

Poll ended at Thu Jul 19, 2007 9:57 am

incredible
6
67%
good
2
22%
too basic
0
No votes
bad
1
11%
 
Total votes : 9
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    Message

pistonvalved copper gun

Unread postAuthor: RDX, » Sat Jul 14, 2007 9:57 am

hi ,this is my first gun that i post here ,I hope you like it much :D

I`m not very good at english so i don't know what to say of the gun
but here is the basic things you need to know :)

chamber: 28mm copper
barrel: 22mm copper,id 20mm
piston: nylon ,light weight,od 26,?mm
seat: od 22mm ,id 20mm
pilot valve: 1/2" qev
qev pilot: modded blowgun
pressure:about 10bar

and if you think why i used 1/2" qev for pilot:
i had one and its good stock 8)

i havent shoot chrono tests yet, but of my 15 pneumatic cannons this might not have best but still very high muzzle velocity for it`s size :wink:

for damage, i shooted 10mm steel rod easily through 15mm plywood using 8bar

some pics:

hole gun

http://www.putfile.com/pic.php?img=5981424


lathed parts ,white one is the piston

http://www.putfile.com/pic.php?img=5981417
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Unread postAuthor: Brooner115 » Sat Jul 14, 2007 10:46 am

Thats a pretty nice looking cannon you got there! Thanx for posting it here... I guess. Where did u post cannons before? Nice lathing its pretty clean. May i suggest a longer barrel though that would improve power and accuracy.

First post WHOO WHOO
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Unread postAuthor: RDX, » Sat Jul 14, 2007 11:14 am

Brooner115 wrote:Thats a pretty nice looking cannon you got there! Thanx for posting it here... I guess. Where did u post cannons before? Nice lathing its pretty clean. May i suggest a longer barrel though that would improve power and accuracy.

First post WHOO WHOO


some i posted spudtech forums and some i even didn't because its not easy to write about the cannon if you don't write english well ,now I write english better so i have started posting :D

and yes longer barrel would improve power and little accuracy but I still use short barrel because i maked this gun to be easy to take somewhere to shoot with my friends ,if i need more power i thread this barrel of and put longer one :wink:
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Unread postAuthor: robert23 » Sat Jul 14, 2007 11:29 am

Nice man, its a clean looking gun. How long is it overall?
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I don't have anything super cool to say down here.

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Unread postAuthor: potatoflinger » Sat Jul 14, 2007 11:46 am

That is one beautiful gun :D
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Unread postAuthor: RDX, » Sat Jul 14, 2007 12:30 pm

robert23 wrote:Nice man, its a clean looking gun. How long is it overall?


thanks :) , overall lenght is 29,5" and barrel is 19"
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Unread postAuthor: Velocity » Sat Jul 14, 2007 1:14 pm

Damn, thats a beautiful gun... looks fun to hold as well. Nice work!
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Unread postAuthor: al-xg » Sat Jul 14, 2007 1:35 pm

Looks good, but that QEV vents near you head when you shoulder it ?
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Unread postAuthor: origin unknown » Sat Jul 14, 2007 3:56 pm

That's one sweet metal gun you've got there! Looks like one of chaos's guns. What country are you from?
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Ecclesiastes 1:9 - What has been will be again, what has been done will be done again; there is nothing new under the sun.
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Unread postAuthor: shud_b_rite » Sat Jul 14, 2007 5:55 pm

That is one nice looking cannon. Looks very tidy and professional. One question, forgive me if I am blind but where is the fill valve?
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Airbeds... so many different uses
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Unread postAuthor: iPaintball » Sat Jul 14, 2007 6:00 pm

That gun is sweet! I wish I could make copper guns as good as yours... Keep up the good work!
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Summer Projects:
CO2 tank hybrid: Gotta fix the meter :(
Cane gun: Needs a pilot/fill setup
1.5" piston valve gun: Almost done
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Unread postAuthor: origin unknown » Sat Jul 14, 2007 7:15 pm

Did you paint your gun silver?
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Ecclesiastes 1:9 - What has been will be again, what has been done will be done again; there is nothing new under the sun.
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Unread postAuthor: Pyro Ninja » Sat Jul 14, 2007 8:52 pm

very nice :) .....looks kinda like galvanized steel.......good job
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Unread postAuthor: RDX, » Sun Jul 15, 2007 4:16 am

al-xg wrote:Looks good, but that QEV vents near you head when you shoulder it ?


yes, but there is a thing that reduces flow little so now the flow don't hurt me :D I´m not sure what the name is but it might be "breather" not sure.
you can see it top of the qev little chrome thing.

origin unknown I´m from Finland :)
and yes i did paint it silver and I think it looks better then copper :)

and fill valve is here: http://www.putfile.com/pic.php?img=5981420

and thanks for the good comments :D
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Unread postAuthor: spud yeti » Sun Jul 15, 2007 4:49 am

Nice looking cannon! I really like it! well done
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really good quote/phrase here
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