Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 74 users online :: 5 registered, 0 hidden and 69 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

2mm Semi

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 
  • Author
    Message

2mm Semi

Unread postAuthor: Carlman » Wed Apr 22, 2009 2:26 am

Gday guys,

I have been using a 1/4" qev coupled with a needle valve and blowgun for semi auto fire for quite a while now (well when i say semi i mean muzzle loading semi...never had the motivation to make a mag for it. That was at 6mm. Now i thought id post a modification i made which was cut the chamber by half and add a 2mm aluminuim barrel.

Even with a barrel that short and running at 70psi i m able to get nearly through both sides of a coke can (at 80 it goes through).

Ammo is 1.9mm lead shot for shot guns.

It wont get a mag or anything because i will be using the QEV for part of my gun in the contest.

Enjoy.
  • 0

Attachments
103_1456.JPG
103_1458.JPG
103_1459.JPG
103_1460.JPG
Image
Aussie spudders unite!!
User avatar
Carlman
Major General
Major General
 
Posts: 1618
Joined: Sat Nov 24, 2007 1:18 am
Location: Western Australia
Reputation: 0

Unread postAuthor: CpTn_lAw » Wed Apr 22, 2009 3:41 am

Hey Carlman! That's nice!!! Any idea of the velocity of the projectiles? i'd say you can put a longer barrel, sleeved in a bigger pipe. it's impressive that you manage to pierce through a can, 'cause it takes a certain amount of energy to do that and would have doubted that 2mm lead shot would have it.
Won't you put it to a higher pressure? small projectiles tend to love the extra force behing them :P

Nice little plinker, clean ^^
  • 0

"J'mets mes pieds où j'veux, et c'est souvent dans la gueule."
User avatar
CpTn_lAw
Brigadier General
Brigadier General
 
Posts: 987
Joined: Sun Sep 11, 2005 9:10 am
Location: France
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 22, 2009 4:05 am

Good stuff. I was contemplating hooking up the Rattlesnake valve to a 3mm barrel as with 500-800 psi performance would be impressive, but at the end of the day 4.5mm is a better idea, more muzzle energy and BBs are much easier to obtain.

If you want better penetration with this, try using "beheaded" nails as ammo ;) and as suggested above, higher pressures go a long way with smaller calibres.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Sparkie » Wed Apr 22, 2009 4:09 am

Noice work Bro,
Just so I don't come across as a complete and utter noob I assume it is a single shot at the moment?
Luckily you can only get through on side of the can or else you would never find that shot in that room
:roll: :roll: :roll:
  • 0

User avatar
Sparkie
Corporal
Corporal
 
Posts: 62
Joined: Wed Dec 26, 2007 3:41 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 22, 2009 4:25 am

Sparkie wrote: Just so I don't come across as a complete and utter noob I assume it is a single shot at the moment?


Carlman wrote:(well when i say semi i mean muzzle loading semi...never had the motivation to make a mag for it.)


noob... :P :D
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Mitchza89 » Wed Apr 22, 2009 4:27 am

Verrrrry nice mate. Job well done! I'm curious to know how you obtain semi auto fire though. Do you have it hooked up to the compressor or get multiple shots from your air chamber?
  • 0

Image
User avatar
Mitchza89
Brigadier General
Brigadier General
 
Posts: 1056
Joined: Tue Jan 09, 2007 12:05 am
Reputation: 0

Unread postAuthor: psycix » Wed Apr 22, 2009 6:55 am

Try a T-piece and a pipe as mag. If you are lucky, it feeds fine!
Why did you drop the 6mm barrel for a 2mm one? Moar surface moar power!


This type of low-calibre QEV gun with constant air feed seems to be very popular these days, I wonder who started that...
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Mitchza89 » Wed Apr 22, 2009 7:17 am

Psycix, that's the exact method I'm going to be using. I'm going to get a nice meter long 7mm bore aluminum barrel plus use the same material for the gravity fed mag (about a 11mm OD) and use a Male 1/2'' tee with compression fittings to hold everything tight and dead straight in place. Fingers crossed!


If all goes well, I'd love to make a mag that holds darts. Maybe even make it into a 6 shot revolver :D





Oh yeah, forgot to mention. Bless you Psycix :) haha:D
  • 0

Image
User avatar
Mitchza89
Brigadier General
Brigadier General
 
Posts: 1056
Joined: Tue Jan 09, 2007 12:05 am
Reputation: 0

Unread postAuthor: Carlman » Wed Apr 22, 2009 11:08 am

Thanks guys, I dropped the 6mm for the 2mm for fun as I got the lead shot for free lol

Its hooked up to a compressor

I am using the qev off this for my competition gun, .177 cal
  • 0

Image
Aussie spudders unite!!
User avatar
Carlman
Major General
Major General
 
Posts: 1618
Joined: Sat Nov 24, 2007 1:18 am
Location: Western Australia
Reputation: 0

Unread postAuthor: dart guy » Tue Jun 18, 2013 8:10 am

it looks like an uzi but the feed tube might have to go in a different place
  • 0

User avatar
dart guy
Major
Major
 
Posts: 397
Joined: Mon May 13, 2013 7:54 pm
Location: not telling you
Reputation: 5

Return to Pneumatic Cannon Database

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot], Yahoo [Bot]

Reputation System ©'