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 45 users online :: 5 registered, 0 hidden and 40 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

My first pneumatic - updated with damage pics

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

My first pneumatic - updated with damage pics

Unread postAuthor: cerberus » Mon Apr 02, 2007 7:32 am

Well, I've never built a pneumatic before but thought I'd give it a go. I've almost finished this one, just need to drill and tap a hole in the plug to fit a schrader valve for filling and attach the rubber to the front of the piston. The piston is made from a 25mm end cap with a 32mm internal sleeve cut and glued to fit a little better. The rest of it should be pretty self explanitory. I look forward to your feedback.
  • 0

Attachments
P1000335.JPG
The business end
Exploded.jpg
The internals, sort of.
Exploded.jpg (27.12 KiB) Viewed 3260 times
the grip.jpg
how the trigger is held. Squeazing forces the handle to the ball valve down.
The Gun.jpg
Full length is 1200mm (3' 11")
The Gun.jpg (25.48 KiB) Viewed 3233 times
dead can.jpg
shooting the base of a can of DB Bitters
misses.jpg
Not all shots hit their mark
tree damage.jpg
Another target miss, but an impressive mark.
piston.jpg
The new more effective and durable piston
Last edited by cerberus on Wed Apr 18, 2007 2:37 am, edited 4 times in total.

cerberus
Private First Class
Private First Class
 
Posts: 25
Joined: Mon Apr 02, 2007 6:48 am
Reputation: 0

Unread postAuthor: hi » Mon Apr 02, 2007 9:06 am

Thats a really clean and nice coaxial. That thing isn't going to have any problem shooting through things. I couldnt tell weather or not the piston had rubber on it. if it doesnt it wont seal very well, Im probably wrong, but just thought id point it out. You did a really good job on this.
  • 0

User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: chaos » Mon Apr 02, 2007 9:08 am

not bad at all for a first try.
good stuff.

if it go no rubber it wont seal @ all :?

chaos
  • 0

User avatar
chaos
Brigadier General
Brigadier General
 
Posts: 1205
Joined: Wed Jan 17, 2007 8:31 am
Reputation: 0

Unread postAuthor: cerberus » Mon Apr 02, 2007 9:17 am

There's no rubber on it at the moment, but it's still under construction, it definately will before I'm done. I hope to have it finished tomorrow but was a little impatient so posted it today.
  • 0


cerberus
Private First Class
Private First Class
 
Posts: 25
Joined: Mon Apr 02, 2007 6:48 am
Reputation: 0

Unread postAuthor: locksmith » Mon Apr 02, 2007 12:03 pm

Nice job.This is very addictive happy building
  • 0


locksmith
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Tue Mar 20, 2007 4:55 pm
Reputation: 0

Unread postAuthor: A-98 » Mon Apr 02, 2007 12:13 pm

nice job, looks good for a first.
  • 0

There are rules, and then there are hundred dollar bills.
User avatar
A-98
Brigadier General
Brigadier General
 
Posts: 921
Joined: Thu Apr 27, 2006 7:41 pm
Location: Santa Barbara, CA
Reputation: 0

Unread postAuthor: iPaintball » Sun Apr 08, 2007 10:25 pm

That is THE cleanest co-axial I have ever seen! Nice job!
  • 0

User avatar
iPaintball
Colonel
Colonel
 
Posts: 695
Joined: Sun Mar 04, 2007 8:37 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: tater36 » Mon Apr 09, 2007 5:29 pm

wheres your fill valve? Im thinkin about building one of these with some spare pvc and a cannon i might dissect are these piston valves really as good as people say they are?
  • 0

User avatar
tater36
Private First Class
Private First Class
 
Posts: 30
Joined: Tue Mar 27, 2007 9:02 pm
Reputation: 0

Unread postAuthor: Mitchza89 » Mon Apr 09, 2007 11:48 pm

Thats a great looking 1st gun :D . You should get and make yaself a modded sprinker valve, the power increase is just crazy. All the best and welcome to spudding :D
  • 0

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

Unread postAuthor: paddo » Tue Apr 10, 2007 7:11 am

very clean. im thinking about making one of these. was going to use ball valves for my first one but iv studied bits and pieces about pistons and made one in my shed before and i think ill give this a shot.

nice cannon mate.
  • 0


paddo
Specialist
Specialist
 
Posts: 52
Joined: Fri Apr 06, 2007 10:20 pm
Reputation: 0

Unread postAuthor: PAspuder » Tue Apr 10, 2007 8:59 am

are you going to give us some damage reports?
  • 0


PAspuder
Specialist
Specialist
 
Posts: 53
Joined: Fri Apr 06, 2007 8:40 pm
Reputation: 0

Unread postAuthor: cerberus » Wed Apr 11, 2007 6:58 am

tater36, these photos are a little old, the cannon was completed and the fill valve(not visible in these photos) is now in the brass end cap seen on the left in the disection pic.

I would post damage pics but unfortunately the PVC end cap didn't like being a piston and shattered on aproximately the 5th shot so I'm looking for some aluminium to form an new stronger piston.

Mitchza89, a sprinkler valve would be great except that they are hard to find down here in NZ and getting one ordered from the US/UK/Where-ever would be prohibatively expensive.

Thanks for the complements guys I'll let you know when the new piston is made and post some damage pics. Could be a week or more though.
  • 0


cerberus
Private First Class
Private First Class
 
Posts: 25
Joined: Mon Apr 02, 2007 6:48 am
Reputation: 0

Unread postAuthor: lukemc » Thu Apr 12, 2007 8:25 am

what did you use for the piston?
  • 0

"Those who are different change the world. Those who are the same keep it that way"
User avatar
lukemc
Colonel
Colonel
 
Posts: 565
Joined: Sun Feb 25, 2007 8:48 am
Location: NY
Reputation: 0

Unread postAuthor: cerberus » Thu Apr 12, 2007 7:22 pm

The piston was made from a 25mm end cap surrounded with a piece of 32mm internal sleave. The sealing face was made of a piece of bike tire inner tube, but like I said, it failed when the end cap smashed so I need to make a slightly more durable piston.
  • 0


cerberus
Private First Class
Private First Class
 
Posts: 25
Joined: Mon Apr 02, 2007 6:48 am
Reputation: 0

Unread postAuthor: cerberus » Tue Apr 17, 2007 11:55 pm

Well I created a new piston out of some high density foam, some washers and an 80mm M6 bolt. The results are impressive, to me at least. I posted some damage pics which can be seen at the top of the page, sorry couldn't figure out how to set the order the pics show up in. Ammo is 16mm glass marbles and shots are all at 100psi.
  • 0

Last edited by cerberus on Wed Apr 18, 2007 12:42 am, edited 1 time in total.

cerberus
Private First Class
Private First Class
 
Posts: 25
Joined: Mon Apr 02, 2007 6:48 am
Reputation: 0

Next

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'