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 57 users online :: 4 registered, 0 hidden and 53 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

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

The Team
Administrators
Global Moderators
global_moderators.png CS

XM2

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

XM2

Unread postAuthor: wngovr » Tue Jul 28, 2009 9:22 pm

Ok, some of you may remember my first pnematic gun.

http://www.spudfiles.com/forums/my-firs ... 18006.html

I really liked that gun but it had many problems. So I thought I would redesign it applying what ive learned on spudfiles and the use of a machine shop.

My original idea was to have a gun that supplied its own air, ( as much pressure as possible) and could shoot blow gun darts.

What I have now is way better than the first gun, (thanks to you guys).

So heres what I got:
36" barrel .402" ID
2 chambers .5" x 5" (with the fittings I estimate total chamber size at .5" x 14".)
QEV valve
breech loading
fires 36 cal. ball with wading

For the pump I used the piston and head from a 12 volt air pump. The head had 2 one way valves on it. The 12 volt pump had a 1 inch throw on it so I bought a long seamless tube (steel) and now the 3/4" piston has a 6" throw. The handle gives me a leverage advantage so pumping up to 300 lbs. is a breeze. About 35 to 40 pumps. The steel made the gun heavy so I started drilling holes in everything.

The only part that isnt metal is the tube going from the pump to the chamber. I wanted to use copper but the pump head would only take rubber hose. The best I could find was on mcmaster carr rated at 300 lbs. It was reinforced clear so I colored it with a magic marker. Turned out pretty good.

Enough talk, heres the gun.

I hope you like it.

All shots were made at 100 feet with 250 to 300 lbs of pressure.
  • 0

Attachments
P7270072.JPG
36 cal lead ball after impact with a 1/4 inch aluminum plate.
dart in alum.JPG
2x4.JPG
2x4 5.JPG
2x4 4.JPG
2x4 2.JPG
1 gal water 2.JPG
1 gal water.JPG
pump end.JPG
pump.JPG
h2.JPG
h1.JPG
breach.JPG
a-2.JPG
a-1.JPG

wngovr
Donating Member
Donating Member
 
Posts: 43
Joined: Sat Apr 19, 2008 5:09 pm
Location: georgia
Reputation: 0

Unread postAuthor: twizi » Tue Jul 28, 2009 9:37 pm

that sweat how long did it take to build?
great machine skills



edit look like a sprinkler valve not a qev
  • 0

User avatar
twizi
Colonel
Colonel
 
Posts: 511
Joined: Thu Nov 27, 2008 9:04 pm
Location: up yours
Reputation: 0

Unread postAuthor: Mr.Sandman » Tue Jul 28, 2009 9:48 pm

Oh my god that is the most asthetically pleasing thing i have ever seen. :thumbright:
  • 0

Yeah, it's that important.
User avatar
Mr.Sandman
Donating Member
Donating Member
 
Posts: 762
Joined: Fri Mar 28, 2008 9:10 am
Country: Antarctica (aq)
Reputation: 0

Unread postAuthor: geardog32 » Tue Jul 28, 2009 10:00 pm

that is awesome. :shock:
  • 0

(\ /)
(0.o)
(><) Copy the bunny to your sig and help him achieve world domination.
User avatar
geardog32
Master Sergeant
Master Sergeant
 
Posts: 173
Joined: Mon Jun 22, 2009 9:20 pm
Reputation: 0

Unread postAuthor: Mitchza89 » Tue Jul 28, 2009 10:13 pm

:shock:.....



....Enough said.

Amazing mate, absolutely amazing..
  • 0

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

Unread postAuthor: theBOOM » Tue Jul 28, 2009 10:34 pm

AMAZING GUN MAN GOOD JOB!!!!!!!!!! :twisted: :twisted:
  • 0

User avatar
theBOOM
Major
Major
 
Posts: 374
Joined: Wed Jun 03, 2009 10:49 pm
Location: San Antonio, TX
Reputation: 0

Unread postAuthor: Mitchza89 » Tue Jul 28, 2009 10:37 pm

Oh to have the skills to machine a gun like that.. I love the sort of valve you have. They are more or less a diaphragm valve just like a 'sprinkler' valve aren't they?
  • 0

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

Sponsored

Sponsor
 


Unread postAuthor: King_TaTer » Tue Jul 28, 2009 10:50 pm

Wow. I must first say that you've done an amazing job and you should be very proud, especially since it's your second gun.

I admire how you've managed to keep the valve assembly, pilot/fill setup, and chamber components so compact. I also like the how the brass and aluminum compliment each other so well, looks awesome.

The damage is very cool. I've never seen .40 caliber darts mangle like that. I couldn't imagine doing that with the blowgun I've got. I'm very impressed to say the least from the power of the gun because the chamber volume seems so small, but then again your taking it to 300psi.

If its possible, could you post pictures of the inner workings of the pump and valve assembly? Thanks in advance and also thank you for posting this incredible gun.
  • 0

Materials links:
<a href="http://www.discounthydraulichose.com/">Discount Hydraulic Hose</a>
<a href="http://www.buyfittingswholesale.com/#">Buy fittings wholesale</a>
<a href="http://www.flexpvc.com/">Flex PVC</a>
<a href="http://www.murrayequipment.com">MEI
</a>
User avatar
King_TaTer
1st Lieutenant
1st Lieutenant
 
Posts: 265
Joined: Fri Nov 17, 2006 6:14 pm
Reputation: 0

Unread postAuthor: wngovr » Tue Jul 28, 2009 11:04 pm

twizi
It took about 2 months to build. Mostly waiting for mail ordered parts.

Mitchza89
Yes, the Q.E.V. is like a sprinkler valve, and is modified much the same way.
  • 0


wngovr
Donating Member
Donating Member
 
Posts: 43
Joined: Sat Apr 19, 2008 5:09 pm
Location: georgia
Reputation: 0

Unread postAuthor: MrCrowley » Tue Jul 28, 2009 11:10 pm

Damn that thing is too nice, love how the gold brass goes with the silver metal. :)
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: theBOOM » Tue Jul 28, 2009 11:47 pm

How much did this beat cost you??
  • 0

User avatar
theBOOM
Major
Major
 
Posts: 374
Joined: Wed Jun 03, 2009 10:49 pm
Location: San Antonio, TX
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Jul 29, 2009 12:10 am

Very dramatic evolution from your first effort, nicely done :) I particularly like the integral pump, neat engineering, kudos!
  • 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: starman » Wed Jul 29, 2009 12:28 am

Really nice work! Nothing like a long lever to get some real work done. The gun has a definite cool factor. My tendency would have been to build in a little more chamber space although I'm sure this is adequate to get the job done...would just require that much more pumping.

Great job!
  • 0

User avatar
starman
Donating Moderator
Donating Moderator
 
Posts: 3041
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC
Reputation: 0

Unread postAuthor: Technician1002 » Wed Jul 29, 2009 12:31 am

starman wrote:Really nice work! Nothing like a long lever to get some real work done. The gun has a definite cool factor. My tendency would have been to build in a little more chamber space although I'm sure this is adequate to get the job done...would just require that much more pumping.

Great job!


Due to the design, other sizes are easly tried. :D Well done.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: POLAND_SPUD » Wed Jul 29, 2009 12:35 am

wow that's great...

I really like the fact that you used such a small chamber

however, there are several things that could be improved like the hose between the pump and the chamber (which obviously makes it more difficult to reach high pressures) but I understand that it would be difficult to improve that now
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Next

Return to Pneumatic Cannon Database

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'