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 81 users online :: 3 registered, 0 hidden and 78 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Piston Brass Air Gun

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Piston Brass Air Gun

Unread postAuthor: sagthegreat » Fri Mar 09, 2012 5:23 pm

This is my first gun:
Mostly Brass
Rubber/Aluminum Piston
about 8 inches long
3mm barrel
pumped to 200 fps so far to test, need to buy shock pump.

Let Me know what you guys think( My next project is a bigger version of this)

Image
  • 0

Last edited by sagthegreat on Fri Mar 09, 2012 5:41 pm, edited 1 time in total.

sagthegreat
Captain
Captain
 
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Country: United States (us)
Reputation: 1

Unread postAuthor: natas » Fri Mar 09, 2012 5:33 pm

take awaty the S in https: and your image link will work :-)
  • 0

To make dreams come true, u must wake up.

natas
Staff Sergeant
Staff Sergeant
 
Posts: 122
Joined: Mon Feb 27, 2012 6:02 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Mar 09, 2012 11:35 pm

Image

Nice little pen gun :)
  • 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: sagthegreat » Sat Mar 10, 2012 11:26 am

for some reason after filling the gun, if I wait for a few seconds the pressure decreases. I can't. fond the leaks argh
  • 0


sagthegreat
Captain
Captain
 
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Country: United States (us)
Reputation: 1

Unread postAuthor: pneumaticcannons » Sat Mar 10, 2012 12:18 pm

Have you dunk it in water? Pen gun leaks are typically very small and inaudable, making water testing a must. Or maybe, your equalization space is very small and when you pressurize it, it takes a while for air to seep into your chamber. Same thing happens to my latest a marker gun (not posted) So tell us a bit more about your piston.
  • 0

ramicaza <- My Youtube Channel
User avatar
pneumaticcannons
Major
Major
 
Posts: 392
Joined: Sat Oct 30, 2010 9:45 am
Location: shite country in asia
Reputation: 0

Unread postAuthor: sagthegreat » Sat Mar 10, 2012 1:32 pm

my piston is a tight fit, its made of aluminum and rubber, then wrapped in tape
  • 0


sagthegreat
Captain
Captain
 
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Country: United States (us)
Reputation: 1

Unread postAuthor: sagthegreat » Sun Mar 25, 2012 11:00 am

it works now thanks guys, i used jsr's epoxy method and cranked this up to 550psi, it shot a nail into a stop sign from 10 feet away, im surprised
  • 0


sagthegreat
Captain
Captain
 
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Country: United States (us)
Reputation: 1

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Sun Mar 25, 2012 11:31 pm

sagthegreat wrote:it shot a nail into a stop sign from 10 feet away


Pictures/video :D
  • 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: sagthegreat » Mon Mar 26, 2012 7:06 am

Sure thing. I just need to get my camera working
  • 0


sagthegreat
Captain
Captain
 
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Country: United States (us)
Reputation: 1

Unread postAuthor: PotatoEnemy17 » Wed Apr 11, 2012 5:47 pm

sagthegreat wrote:it works now thanks guys, i used jsr's epoxy method and cranked this up to 550psi, it shot a nail into a stop sign from 10 feet away, im surprised


And now everyone who stops at that stop sign will know that you have the best pen gun in the city.
  • 0


PotatoEnemy17
Staff Sergeant
Staff Sergeant
 
Posts: 100
Joined: Tue Apr 10, 2012 6:33 pm
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'