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 71 users online :: 5 registered, 0 hidden and 66 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

my Big Cannon

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 Big Cannon

Unread postAuthor: cenzo188 » Wed Oct 03, 2007 6:44 pm

my first and best pneumatic cannon, i call it the Big Cannon. it has a 1 inch bore. Launches C batteries really well, and just about anything else with a foam sabot. I am currently experimenting with dart-board darts with sabots. It is a big, heavy, clumsy behemoth so I usually shoot it mounted on a sawhorse but it shoots reallllllly fast and accurate. my newest mod is a lubricated barrel, lubed with a teflon fiber lubricant and it really makes a nice seal with any projectile.

the attached pictures are old pictures, now I have a psi guage and breech added; will take more as soon as I can find my dumb camera!


soon I will post pics of my 2 other cannons, another pneumatic and a classic combustion. Also some damage shots.

I'm new here.... just discovered this site and its cool =)

ps: in response to some comments, my clean out cap is in fact safe
  • 0

Attachments
air cannon 1.0.0.JPG
100_0209.JPG
Last edited by cenzo188 on Wed Oct 03, 2007 8:50 pm, edited 1 time in total.
User avatar
cenzo188
Private
Private
 
Posts: 17
Joined: Sat Sep 15, 2007 8:27 am
Reputation: 0

Unread postAuthor: pyromaniac » Wed Oct 03, 2007 6:49 pm

Sorry to tell you this but this cannon has a lot of dwv. The clean out cap and reducers are all dwv (drain waste vent). Maybe cut off the reducers and put some pressure rated ones in and a new cap. Other then that nice first cannon.

I wouldn't take this over 40 psi if dropped while pressurized it may explode.
  • 0

:pottytrain3:
User avatar
pyromaniac
Brigadier General
Brigadier General
 
Posts: 805
Joined: Tue Feb 27, 2007 7:18 pm
Location: MO
Reputation: 0

Unread postAuthor: ShowNoMercy » Wed Oct 03, 2007 7:47 pm

What year vette is that ? Btw nice cannon :lol:
  • 0

Jesus saves, no need to pray
The gates of pearl have turned to gold
It seems you've lost your way
User avatar
ShowNoMercy
Brigadier General
Brigadier General
 
Posts: 1094
Joined: Mon Mar 19, 2007 8:08 am
Location: Jersey Bitches!
Reputation: 0

Unread postAuthor: spudgunnerwryyyyy » Wed Oct 03, 2007 7:57 pm

Cenzo. That end cap is very unsafe. A proper end cap cost about 3 dollars. A coupling to bushing for reducing costs about 7 dollars. Spend 10 dollars and make it safe. Right now it is not safe. Other than the massive non safeness good cannon.
  • 0

The Doors are awesome, Led Zeppelin is amazing, and Motley Crue kicks @$$.
Go Orange Box

RAP SUCKS
User avatar
spudgunnerwryyyyy
1st Lieutenant
1st Lieutenant
 
Posts: 261
Joined: Thu Jul 12, 2007 10:54 pm
Reputation: 0

Unread postAuthor: cenzo188 » Wed Oct 03, 2007 8:02 pm

whats unsafe about the cap?
  • 0

User avatar
cenzo188
Private
Private
 
Posts: 17
Joined: Sat Sep 15, 2007 8:27 am
Reputation: 0

Unread postAuthor: spudgunnerwryyyyy » Wed Oct 03, 2007 8:18 pm

Its a clean out cap meant for low pressure drainage systems. It is meant to hold pressures of about 10-15 psi. Unless you used a female adapter with a threaded plug. But looking at the cap it doesn't look that way. Use your judgment I'm just informing you.
  • 0

The Doors are awesome, Led Zeppelin is amazing, and Motley Crue kicks @$$.
Go Orange Box

RAP SUCKS
User avatar
spudgunnerwryyyyy
1st Lieutenant
1st Lieutenant
 
Posts: 261
Joined: Thu Jul 12, 2007 10:54 pm
Reputation: 0

Unread postAuthor: cenzo188 » Wed Oct 03, 2007 8:19 pm

i did use a female adapter with a threaded plug
  • 0

User avatar
cenzo188
Private
Private
 
Posts: 17
Joined: Sat Sep 15, 2007 8:27 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: spudgunnerwryyyyy » Wed Oct 03, 2007 8:30 pm

Sweet, sorry for giving you so much crap man just making sure every ones safe. Happy spudding. You might want to edit that into your main post as people like me may say something. Sorry again.
SpudGunnerWryyyyy
  • 0

The Doors are awesome, Led Zeppelin is amazing, and Motley Crue kicks @$$.
Go Orange Box

RAP SUCKS
User avatar
spudgunnerwryyyyy
1st Lieutenant
1st Lieutenant
 
Posts: 261
Joined: Thu Jul 12, 2007 10:54 pm
Reputation: 0

Unread postAuthor: noname » Wed Oct 03, 2007 8:57 pm

Since the plug, which can SCREW IN, happens to be THREADED, it's safe? Hell no! It's NSF-dwv, and it's very unsafe. So are both reducers. You're going to end up hurting or killing yourself or someone else with this cannon. Cut off the non-pressure rated parts and replace them with parts that say "NSF-pw" on them.
  • 0

User avatar
noname
Lieutenant General
Lieutenant General
 
Posts: 2699
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA
Country: United States (us)
Reputation: 9

Unread postAuthor: benstern » Wed Oct 03, 2007 11:36 pm

:sign10: <the_todd>I'll show you a big cannon right here!!!!</the_todd> :sign10: :spam2:

But seriously: trash that cannon way too unsafe; risk of catastrophic failure too great.
  • 0

User avatar
benstern
Donating Member
Donating Member
 
Posts: 909
Joined: Wed Sep 21, 2005 8:24 pm
Reputation: 0

Unread postAuthor: hi » Wed Oct 03, 2007 11:41 pm

dont trash the cannon, just the few parts. the way it is right now it is perfect for changing parts.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: DYI » Thu Oct 04, 2007 4:39 pm

The female adapter, cleanout cap, and reducer are all non pressure rated, and the chamber is a complete waste of air. Just cut off the DWV PVC parts, and replace them with pressure rated ones, and you should be fine. If possible, attach a longer, and/or wider barrel. No point lugging around a big cannon when all that extra weight is just wasted space.

Noname: Threaded plugs are usually pressure rated, and cleanout caps are never pressure rated.
  • 0

Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
User avatar
DYI
Lieutenant General
Lieutenant General
 
Posts: 2861
Joined: Sat Jul 07, 2007 8:18 pm
Location: The People's Republic of Canuckistan
Country: Turks and Caicos Islands (tc)
Reputation: 9

Unread postAuthor: noname » Thu Oct 04, 2007 8:22 pm

A cleanout cap is a threaded plug, is it not? It may not be NSF-pw, but it is THREADED, and it PLUGS a female adapter. That's enough of a threaded plug for me. I'd only use one in a combustion, but being DWV doesn't make it any less threaded or pluggish.
  • 0

User avatar
noname
Lieutenant General
Lieutenant General
 
Posts: 2699
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA
Country: United States (us)
Reputation: 9

Unread postAuthor: ammosmoke » Thu Oct 04, 2007 8:32 pm

Pluggish lol... Really, a cap would have been cheaper/safer. And if that is a cleanout cap, well, its just not safe. Why spend 10 bucks when you only need to spend 3?
  • 0

<img>http://www.speedtest.net/result/309559995.png</img>
User avatar
ammosmoke
Brigadier General
Brigadier General
 
Posts: 1011
Joined: Wed Sep 27, 2006 10:57 am
Reputation: 0

Unread postAuthor: DYI » Sat Oct 06, 2007 5:24 pm

I'd only use one in a combustion, but being DWV doesn't make it any less threaded or pluggish.


"Pluggish"... Yeah, I know that a cleanout cap is a threaded plug, but the pressure rated ones are usually distinguished from the DWV ones by the different names.
  • 0

Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
User avatar
DYI
Lieutenant General
Lieutenant General
 
Posts: 2861
Joined: Sat Jul 07, 2007 8:18 pm
Location: The People's Republic of Canuckistan
Country: Turks and Caicos Islands (tc)
Reputation: 9

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'