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 53 users online :: 4 registered, 0 hidden and 49 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

Air Delay Mine

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

Unread postAuthor: singularity » Thu Feb 08, 2007 7:21 pm

if you put the paint in then put on one of the shopping bags (you know the ones they have at the grocery store) over the end of the barrel i think it would work pretty well just need to find a good way to secure it on the tip of the barrel
  • 0

be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
User avatar
singularity
Brigadier General
Brigadier General
 
Posts: 982
Joined: Mon Jun 26, 2006 10:53 pm
Location: someplace
Reputation: 0

Unread postAuthor: judgment_arms » Fri Feb 09, 2007 9:56 am

potter wrote:That is sick as man and i like the way u made it very orignal and it dosent look to hard to make eather i migh make one of these and use it when i play paintball with my mates


Hey don’t go copying other people’s work, that’s called “stealing”. You need to ask him if it’s okay.
  • 0

Call me "Judge", it's easier to type.

Spud gun safety rules
User avatar
judgment_arms
Major General
Major General
 
Posts: 1272
Joined: Tue Oct 17, 2006 8:49 pm
Location: Not so beautiful North Carolina, but at least it’s the U.S.A.!
Reputation: 0

Unread postAuthor: PVC Arsenal 17 » Fri Feb 09, 2007 3:00 pm

go ahead...
  • 0


PVC Arsenal 17
Major General
Major General
 
Posts: 1762
Joined: Mon Mar 27, 2006 4:18 pm
Location: United States
Reputation: 1

Unread postAuthor: Chimps » Fri Feb 09, 2007 8:01 pm

noname wrote:"Fairly decent?"
Invent a better one, I'm waiting.



Thank you very much, i did, and it is a freak load better! It took me 15 minutes during chemistry class this morning to draw it up.

here's a pic :booty:
  • 0

Attachments
paint granade.jpg
User avatar
Chimps
Private
Private
 
Posts: 17
Joined: Fri Jan 26, 2007 1:57 pm
Reputation: 0

Unread postAuthor: judgment_arms » Fri Feb 09, 2007 10:52 pm

Words fail me!
Ok found ‘em…That would make a nice warhead… works on paper, but will it work in plastic? Wait, the cotton will just shoot up clogging the spray head…
  • 0

Call me "Judge", it's easier to type.

Spud gun safety rules
User avatar
judgment_arms
Major General
Major General
 
Posts: 1272
Joined: Tue Oct 17, 2006 8:49 pm
Location: Not so beautiful North Carolina, but at least it’s the U.S.A.!
Reputation: 0

Unread postAuthor: Hotwired » Fri Feb 09, 2007 11:12 pm

I can describe a simpler timed mine. This is a summary of a common chemistry demo:

You have a gas filled tin with a hole in the lid and base, you light the top hole and it burns off gas from inside with an external flame, drawing air up into the tin to replace it.

When the air/gas mix inside the tin reaches the right level the flame flashes back into the tin causing the mix to explosively combust. This can take a minute or so.

I believe the gas explosion could be used to hurl a payload a moderate distance instead of merely blowing the lid off a tin if scaled up appropriately with the right materials and design to exploit it.

The only drawback would be the naked flame that acts as the timer.
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: judgment_arms » Fri Feb 09, 2007 11:23 pm

Hotwired wrote:...The only drawback would be the naked flame that acts as the timer.


HA, that’s funny. you call that bad? I call it physiological warfare!!!
  • 0

Call me "Judge", it's easier to type.

Spud gun safety rules
User avatar
judgment_arms
Major General
Major General
 
Posts: 1272
Joined: Tue Oct 17, 2006 8:49 pm
Location: Not so beautiful North Carolina, but at least it’s the U.S.A.!
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Hotwired » Fri Feb 09, 2007 11:32 pm

Eh?

I think that one missed me.

The flame size depends a great deal on the gas hole and could be kept shielded by a gauze cover. It could easily be the size of a match flame.

The gas and air holes also regulate the time it takes to fire - larger holes = a larger flame which means faster gas burn off = faster air/gas mixing to combustion levels.


Hmm. In a nutshell its a time delayed metered gas combustion with a perfect gas/air mixture.
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: Insomniac » Sat Feb 10, 2007 1:04 am

Not quite a perfect gas/air mixture. It will fire as soon as it can, meaning the mix will always be rich.
  • 0

I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.

Add me on msn!!! insomniac-55@hotmail.com
User avatar
Insomniac
Major General
Major General
 
Posts: 1297
Joined: Mon Dec 18, 2006 3:47 pm
Location: Australia
Country: Australia (au)
Reputation: 0

Unread postAuthor: Hotwired » Sat Feb 10, 2007 5:45 am

Close enough :D

I feel like filling a coffee tin with camping gas and lighting it now :P
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: jjk92 » Sat Feb 10, 2007 8:03 am

judgment_arms wrote:Words fail me!
Ok found ‘em…That would make a nice warhead… works on paper, but will it work in plastic? Wait, the cotton will just shoot up clogging the spray head…
you could put metal mesh over it so the cotton stays in place
  • 0

User avatar
jjk92
Staff Sergeant
Staff Sergeant
 
Posts: 127
Joined: Thu Apr 06, 2006 5:22 am
Reputation: 0

Unread postAuthor: Chimps » Sun Feb 11, 2007 3:44 pm

the cotton isnt a big deal. You may not even need it. yea you could put mesh infront of it and i'd also assume that the paint would spray out first even if the cotton came out at all. Since there is no air pressure behind the cotton then it should stay in place anyways.
Anyhoo, yup I've started on the granade already and I've completed the reverse piston valve. it's going to be really easy to make.Probably cost under $15 to make and you'd have leftovers to make like half of another.

As for the metal tin can shrapnel granade...I really don't think that that's the solution...I suppose that you could easily make a combustion granade if you had a delay switch but those aren't always relyable like the pneumatics are.
  • 0

User avatar
Chimps
Private
Private
 
Posts: 17
Joined: Fri Jan 26, 2007 1:57 pm
Reputation: 0

Unread postAuthor: Hotwired » Sun Feb 11, 2007 5:48 pm

???

Its not a grenade I was thinking of....

The eventual gas explosion could be harnessed as a small combustion cannon to blast out paint or whatever a short distance.
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: noname » Sun Feb 11, 2007 6:50 pm

Chimps, you're idea is OK, I guess. It's not portable enough and would take too much effort to go and build, plus, it wouldn't be reusable.
  • 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: PVC Arsenal 17 » Sun Feb 11, 2007 9:28 pm

Chimps, do you really think this is all I have? I've got loads of ideas, this was a shot a cheap and practical idea. You don't have to prove anything.
  • 0


PVC Arsenal 17
Major General
Major General
 
Posts: 1762
Joined: Mon Mar 27, 2006 4:18 pm
Location: United States
Reputation: 1

PreviousNext

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'