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 54 users online :: 5 registered, 0 hidden and 49 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

Pneumatic Pen-gun Project

Built a miniature 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: jackssmirkingrevenge » Tue May 08, 2007 10:22 pm

If you build the cartridge with the schrader at the base of it, there's no need to come up with an innovative design - you have ever a century of cartridge firearm mechanism development for reference ;)

It's on my "to do" list but I'm working on something else at the moment.
  • 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: paaiyan » Tue May 08, 2007 10:37 pm

This is pretty sweet. I bet this'd be awesome to piss teachers off at school. If you had a way to refill it there.
  • 0

"Who ever said the pen was mightier than the sword, obviously, never encountered automatic weapons."
-General Douglass MacArthur

Read my dog's blog - Life of Kilo
User avatar
paaiyan
Major General
Major General
 
Posts: 2140
Joined: Wed Dec 27, 2006 10:03 pm
Location: Central Oklahoma
Country: United States (us)
Reputation: 1

Unread postAuthor: jackssmirkingrevenge » Tue May 08, 2007 10:48 pm

paaiyan wrote:This is pretty sweet. I bet this'd be awesome to piss teachers off at school. If you had a way to refill it there.


The pump I use is very compact when folded, only slightly longer than the launcher itself - though of course I don't in any way advocate or condone its use for malicious purposes.
  • 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: paaiyan » Tue May 08, 2007 10:49 pm

jackssmirkingrevenge wrote:
paaiyan wrote:This is pretty sweet. I bet this'd be awesome to piss teachers off at school. If you had a way to refill it there.


The pump I use is very compact when folded, only slightly longer than the launcher itself - though of course I don't in any way advocate or condone its use for malicious purposes.


Oh of course not. :wink:
  • 0

"Who ever said the pen was mightier than the sword, obviously, never encountered automatic weapons."
-General Douglass MacArthur

Read my dog's blog - Life of Kilo
User avatar
paaiyan
Major General
Major General
 
Posts: 2140
Joined: Wed Dec 27, 2006 10:03 pm
Location: Central Oklahoma
Country: United States (us)
Reputation: 1

Unread postAuthor: ammosmoke » Tue May 08, 2007 11:27 pm

I don't understand, how does this work? Wouldn't pushing on the end vent the pressure out of the shrader? Thus doing nothing? How does this...?
  • 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: keep_it_real » Tue May 08, 2007 11:30 pm

Yes it does vent it but only behind the piston. The piston moves back and lets the air in front of the piston out the barrel. It is a barrel sealing co-axial if you want to research it.
  • 0


keep_it_real
Captain
Captain
 
Posts: 320
Joined: Sat Dec 23, 2006 4:41 pm
Location: Bend, Oregon
Reputation: 0

Unread postAuthor: ammosmoke » Wed May 09, 2007 12:12 am

OH!! *mind block blows up* I get it now!! I could never understand how co-axials work until now. It relieves the pressure just enough for the piston to move back and "unclog" the barrel, then pow! I am so glad I finally got it!!
  • 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

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Wed May 09, 2007 3:10 am

ammosmoke wrote:I am so glad I finally got it!!


You've been a member since September and only got it now :? Ah well, better late than never :wink:
  • 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: origin unknown » Wed May 09, 2007 6:41 pm

Why isn't your entry in the voting list?
  • 0

User avatar
origin unknown
Colonel
Colonel
 
Posts: 533
Joined: Sat Apr 14, 2007 2:38 pm
Location: Searcy, Arkansas (college) and Memphis, TN (hometown)
Reputation: 0

Unread postAuthor: pyromaniac » Wed May 09, 2007 6:43 pm

His gun is the only mini it automatics moves to the next round.
  • 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: origin unknown » Wed May 09, 2007 6:43 pm

oops...forgot it was a mini
  • 0

User avatar
origin unknown
Colonel
Colonel
 
Posts: 533
Joined: Sat Apr 14, 2007 2:38 pm
Location: Searcy, Arkansas (college) and Memphis, TN (hometown)
Reputation: 0

Unread postAuthor: joannaardway » Fri May 11, 2007 11:25 am

Very innovative. This probably qualifies as one of the smallest spudguns in history.

My only really mini "cannon" to date was a coilgun. My brother then of course had to come up with something twice as good, and three times as efficent, but it was still damned fun.
  • 0

Novacastrian: How about use whatever the heck you can get your hands on?
frankrede: Well then I guess it won't matter when you decide to drink bleach because your out of kool-aid.
...I'm sorry, but that made my year.
User avatar
joannaardway
Brigadier General
Brigadier General
 
Posts: 949
Joined: Mon Oct 09, 2006 4:57 pm
Location: SW Hertfordshire, England, UK.
Reputation: 0

Unread postAuthor: FeLeX » Fri May 11, 2007 1:01 pm

If it isnt a secret, what did your bro come up with?
  • 0

User avatar
FeLeX
Captain
Captain
 
Posts: 310
Joined: Sat Mar 10, 2007 10:45 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri May 11, 2007 1:23 pm

joannaardway wrote:Very innovative. This probably qualifies as one of the smallest spudguns in history.


Thanks :)

The smallest semi-amateur pneumatic I can think of is this device: pop-shot micro gun - chambered in 0.177 using the Brocock micro air cartridge (now illegal in the UK thanks to your lovely government :P) at about 900 psi.

I haven't seen a smaller co-axial though :D I could easily have gone smaller lengthwise but I wanted some measure of power.
  • 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: ammosmoke » Fri May 11, 2007 7:57 pm

THat is so CoOl!!! I wish I had one of those key chain guns!!! They cost so much though... WAAAAHHH!!!
  • 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

PreviousNext

Return to Miniature Cannon Database

Who is online

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

Reputation System ©'