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pistonvalved copper gun

Posted: Sat Jul 14, 2007 9:57 am
by RDX,
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

Posted: Sat Jul 14, 2007 10:46 am
by Brooner115
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

Posted: Sat Jul 14, 2007 11:14 am
by RDX,
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:

Posted: Sat Jul 14, 2007 11:29 am
by robert23
Nice man, its a clean looking gun. How long is it overall?

Posted: Sat Jul 14, 2007 11:46 am
by potatoflinger
That is one beautiful gun :D

Posted: Sat Jul 14, 2007 12:30 pm
by RDX,
robert23 wrote:Nice man, its a clean looking gun. How long is it overall?
thanks :) , overall lenght is 29,5" and barrel is 19"

Posted: Sat Jul 14, 2007 1:14 pm
by Velocity
Damn, thats a beautiful gun... looks fun to hold as well. Nice work!

Posted: Sat Jul 14, 2007 1:35 pm
by al-xg
Looks good, but that QEV vents near you head when you shoulder it ?

Posted: Sat Jul 14, 2007 3:56 pm
by origin unknown
That's one sweet metal gun you've got there! Looks like one of chaos's guns. What country are you from?

Posted: Sat Jul 14, 2007 5:55 pm
by shud_b_rite
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?

Posted: Sat Jul 14, 2007 6:00 pm
by iPaintball
That gun is sweet! I wish I could make copper guns as good as yours... Keep up the good work!

Posted: Sat Jul 14, 2007 7:15 pm
by origin unknown
Did you paint your gun silver?

Posted: Sat Jul 14, 2007 8:52 pm
by Pyro Ninja
very nice :) .....looks kinda like galvanized steel.......good job

Posted: Sun Jul 15, 2007 4:16 am
by RDX,
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

Posted: Sun Jul 15, 2007 4:49 am
by spud yeti
Nice looking cannon! I really like it! well done