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 64 users online :: 3 registered, 0 hidden and 61 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Small Bore Airsoft Rifle S.B.A.R.

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

Small Bore Airsoft Rifle S.B.A.R.

Unread postAuthor: Kobl » Thu Jul 17, 2008 1:56 pm

So here it is. I got the first parts a couple months ago then lost interest in building cannons, but recently I became interested again.

This gun shoots like a dream, killed a shaken up seltzer can at 20 psi and is capable of at least 400. The power will increase once I get another 1-2 feet of barrel on there too.

At the moment I'm using a cast hot-glue piston but will be switching to cast epoxy soon (its drying).

I'll get internal shots when I put in the new piston.

Pics:

<a href="http://s184.photobucket.com/albums/x58/Kobl_mindguy/?action=view&current=IMG_1882.jpg" target="_blank"><img src="http://i184.photobucket.com/albums/x58/Kobl_mindguy/IMG_1882.jpg" border="0" alt="Photobucket"></a>

<a href="http://s184.photobucket.com/albums/x58/Kobl_mindguy/?action=view&current=IMG_1883.jpg" target="_blank"><img src="http://i184.photobucket.com/albums/x58/Kobl_mindguy/IMG_1883.jpg" border="0" alt="Photobucket"></a>

<a href="http://s184.photobucket.com/albums/x58/Kobl_mindguy/?action=view&current=IMG_1884.jpg" target="_blank"><img src="http://i184.photobucket.com/albums/x58/Kobl_mindguy/IMG_1884.jpg" border="0" alt="Photobucket"></a>

<a href="http://s184.photobucket.com/albums/x58/Kobl_mindguy/?action=view&current=IMG_1891.jpg" target="_blank"><img src="http://i184.photobucket.com/albums/x58/Kobl_mindguy/IMG_1891.jpg" border="0" alt="Photobucket"></a>
  • 0


Kobl
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Tue Nov 07, 2006 4:58 pm
Reputation: 0

Unread postAuthor: blind909 » Thu Jul 17, 2008 2:17 pm

Nice gun, is it all 1/2 inch or 1/4 inch?, all it needs now is a stock, and a painjob, and it would be AWSOME.
  • 0

<a href="http://www.danasoft.com"><img src="http://www.danasoft.com/citysign.jpg" border="0"></a><div>
THIS STATES WHERE YOU LIVE, NOT ME, IT SAYS WHERE YOU LIVE BASED ON YOUR IP ADRESS.
User avatar
blind909
Brigadier General
Brigadier General
 
Posts: 828
Joined: Thu Aug 02, 2007 6:06 pm
Location: Las Vegas, NV
Reputation: 1

Unread postAuthor: Kobl » Thu Jul 17, 2008 2:20 pm

1/2 inch, and I didn't have it mounted in the first couple pictures, but I have a shock pump hose clamped to the barrel for portable ass-kicking.
  • 0


Kobl
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Tue Nov 07, 2006 4:58 pm
Reputation: 0

Unread postAuthor: blind909 » Thu Jul 17, 2008 2:24 pm

OK, and are you going to add a stock? And dont go anywhere over 150 psi, because of your blowgun pilot valve, if you want to take it to its full potential, replace the blowgun with a 1/4 inch ball valve.
  • 0

Last edited by blind909 on Thu Jul 17, 2008 2:26 pm, edited 1 time in total.
<a href="http://www.danasoft.com"><img src="http://www.danasoft.com/citysign.jpg" border="0"></a><div>
THIS STATES WHERE YOU LIVE, NOT ME, IT SAYS WHERE YOU LIVE BASED ON YOUR IP ADRESS.
User avatar
blind909
Brigadier General
Brigadier General
 
Posts: 828
Joined: Thu Aug 02, 2007 6:06 pm
Location: Las Vegas, NV
Reputation: 1

Unread postAuthor: Sticky_Tape » Thu Jul 17, 2008 2:26 pm

looks good except portable ass kicking against a aeg is unlikely olny at long range.
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: Kobl » Thu Jul 17, 2008 2:50 pm

I have no worries about the blowgun, I did have a 1/4" ball valve on it though, and I couldn't hit crap. The blowgun is the only ergonomic option.
  • 0


Kobl
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Tue Nov 07, 2006 4:58 pm
Reputation: 0

Unread postAuthor: potatoflinger » Thu Jul 17, 2008 4:03 pm

The blowgun should be fine, I use them at 200 PSI very frequently.

Great plinker you got there :)
  • 0

It's hard to soar with eagles when you're working with turkeys.
User avatar
potatoflinger
Brigadier General
Brigadier General
 
Posts: 1136
Joined: Thu Nov 02, 2006 3:26 pm
Location: Maryland
Reputation: 1

Sponsored

Sponsor
 


Unread postAuthor: Spuddin » Thu Jul 17, 2008 4:17 pm

nice little powerhouse u got there, would love to see it shoot a ball bearing at something for penetration purposes. this makes me interested in building a all metal piston gun, someday :roll:
  • 0

User avatar
Spuddin
Donating Member
Donating Member
 
Posts: 262
Joined: Wed May 16, 2007 1:28 pm
Location: Oklahoma
Country: United States (us)
Reputation: 0

Unread postAuthor: Hotwired » Thu Jul 17, 2008 4:40 pm

potatoflinger wrote:The blowgun should be fine

I use them at 400 PSI very infrequently :P

The model I'm using is slightly different but in the same shiny-silver-basic-blowgun-with-red-rubber-handle category.

The plinker looks good, only question I have is... is your piston really almost the length of your chamber?
  • 0

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

Unread postAuthor: Kobl » Thu Jul 17, 2008 4:43 pm

No, it occupies about three quarters of the space of the shiny chrome nipple. The rest is dead space :?.
  • 0


Kobl
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Tue Nov 07, 2006 4:58 pm
Reputation: 0

Unread postAuthor: Sticky_Tape » Thu Jul 17, 2008 5:19 pm

as most people will say D/4
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: Kobl » Fri Jul 18, 2008 5:49 pm

What exactly is this D/4 thing I keep hearing about?
  • 0


Kobl
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Tue Nov 07, 2006 4:58 pm
Reputation: 0

Unread postAuthor: Hotwired » Fri Jul 18, 2008 7:54 pm

The piston only needs to move back 1/4 of the internal diameter of the tube it's sealing on to achieve full flow.

There are a few other issues that need to be taken into account if you want full flow but that is what d/4 means.
  • 0

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

Unread postAuthor: rhyce » Sat Jul 19, 2008 5:31 am

i love this gun and it makes me want to build one.....so bad.
If you were too put a schrader valve on it were would you do so?
  • 0

________________________________________
Teh aussie
User avatar
rhyce
Private First Class
Private First Class
 
Posts: 38
Joined: Wed Jun 13, 2007 7:01 am
Location: Victoria
Reputation: 0

Unread postAuthor: Kobl » Sun Jul 20, 2008 3:42 pm

It has a shrader valve...

On the epoxy piston front the pseudo epoxy I used (check out my mini piston valve thread) sucks balls. I've left it curing for 2 1/2 days and its still wet.

Does anyone have a good online source for epoxy resin?
  • 0


Kobl
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Tue Nov 07, 2006 4:58 pm
Reputation: 0

Next

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'