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 48 users online :: 4 registered, 0 hidden and 44 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

My BV air shotgun needs help

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

My BV air shotgun needs help

Unread postAuthor: Marffy » Sun May 16, 2010 5:01 pm

I made a pneumatic shotgun that uses a .5" ball valve and galv. pipe that has a seem. I also need some way to fill it to its max potential. I was thinking about a co2 tire filler (but with a 12" chamber made of .75" pipe the co2 will fill it to 800psi+), a shock pump, or a regulated oxygen tank (which i am already in the process of making.) but i would like to have something to fill it with sooner. If i did use the tire filler could it be possible to lower the pressure that will be put in the chamber?

Any suggestions on how i could spring load the valve would be nice too.
  • 0

Attachments
P1010093.JPG
the gun
P1010094.JPG
down the "sights"
Last edited by Marffy on Sun May 16, 2010 8:06 pm, edited 1 time in total.
"Hard work has a future pay-off. Laziness pays off now."
User avatar
Marffy
1st Lieutenant
1st Lieutenant
 
Posts: 258
Joined: Mon Jul 27, 2009 2:03 pm
Location: earth
Reputation: 0

Unread postAuthor: FighterAce » Sun May 16, 2010 5:42 pm

That actually looks worse then my first wooden gun I made bout 6 years ago :lol: Sry but its true..

I use pipes just like that and from what I've heard about them in the store they are good up to 1000+psi... but dont take it from me, I'm not sure bout this info. Would be nice if someone else can confirm this.
BV should have a marking on them PN##. The number after PN indicates the operating pressure. I wouldnt trust a bv without it...

If you're gonna spring load it then the valve handle should move towards you. Just put a U shaped sear, a spring and a few screws to make the spring move straight. You'll need a very long trigger rod tho. I would guess 40 cm :shock:

I could throw in a sketch but its late and I'm too tired to do so...
Do you want the spring to be outside or inside? If you want it inside you'll need to get rid of those hose clamps cause they will be getting in the way.
  • 0

User avatar
FighterAce
1st Lieutenant
1st Lieutenant
 
Posts: 286
Joined: Fri Oct 23, 2009 1:28 pm
Location: Croatia/Zagreb
Country: Croatia (hr)
Reputation: 1

Unread postAuthor: clemsonguy1125 » Sun May 16, 2010 6:22 pm

Im not sure about the pressure but this should help you with the spring loading, http://www.sentex.net/~mwandel/cannon/air_gun.html
It looks good, give it a paint job and it will look better
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Unread postAuthor: Marffy » Sun May 16, 2010 6:47 pm

FighterAce wrote:That actually looks worse then my first wooden gun I made bout 6 years ago :lol: Sry but its true..


yes but did yours have a total build time of only a couple hours? What makes it ugly? the unfinished stock? just wondering. The picture makes it look ugly in my mind.
  • 0

"Hard work has a future pay-off. Laziness pays off now."
User avatar
Marffy
1st Lieutenant
1st Lieutenant
 
Posts: 258
Joined: Mon Jul 27, 2009 2:03 pm
Location: earth
Reputation: 0

Unread postAuthor: Gun Freak » Sun May 16, 2010 6:52 pm

I don't think it looks bad at all. I will be awsome with a spring loaded trigger too.
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: MrCrowley » Sun May 16, 2010 7:14 pm

I think it looks alright once you finish the stock.
Ball valve might leak at 800PSI, but nothing should fail I wouldn't think.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: Gun Freak » Sun May 16, 2010 7:16 pm

My 1/4 ball valve says 600 psi but you can always push it, so for a 1/2 I would stay under 700 psi
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Sponsored

Sponsor
 


Unread postAuthor: Marffy » Sun May 16, 2010 8:05 pm

I found out what the BV is rated to. 600psi. it said it on the handle in a very small font.
  • 0

"Hard work has a future pay-off. Laziness pays off now."
User avatar
Marffy
1st Lieutenant
1st Lieutenant
 
Posts: 258
Joined: Mon Jul 27, 2009 2:03 pm
Location: earth
Reputation: 0

Unread postAuthor: Cannoneer » Mon May 17, 2010 1:31 am

Ah this is where ball valves truly shine!!! I am really looking forward to seeing what sort power you get over a longer range,say 60yds? Oh and I really like you're stock. All you really need to do is square off the bottom of the handle and then sand and varnish it and you'd have a very nice looking gun. At least you've used hose clamps and not zip ties. Good luck with the trigger setup.
  • 0


Cannoneer
Private First Class
Private First Class
 
Posts: 27
Joined: Sun May 02, 2010 5:47 pm
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

cron
Reputation System ©'