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 55 users online :: 6 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], Google Adsense [Bot], jackreacher, MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Air tank

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

Air tank

Unread postAuthor: bl00dwolf » Wed Apr 14, 2010 8:07 pm

i am going to build my first airgun. but i want to know what would be a good material to use as an air resivoir? i want to have an operating pressure around 500 psi. and if i were to make a tank that could do that would it have to be very large or could it be a compact size like a little bigger than an airsol can or something.
  • 0


bl00dwolf
Private
Private
 
Posts: 6
Joined: Wed Apr 14, 2010 7:56 pm
Reputation: 0

Unread postAuthor: kjjohn » Wed Apr 14, 2010 8:21 pm

You need to do more research before you ask questions like this, but I'll answer your question anyway.

Everything depends on the bore of the gun, what you are launching, etc. It you want to launch something small, say, .50" bore, copper would be best as a chamber, and could definitely take 500psi, but I wouldn't recommend such high pressures for a beginner. For a gun this, size, you would not need a big chamber. Big chambers are better for larger bore guns

On the other hand, if you want a powerful large bore launcher (1.5"+), you could make it out of galv steel or aluminum, or just about any metal pipe. Again, size of the chamber would depend on many different variables.

But seriously, you could find all this stuff in the Spudfiles Wiki. I suggest you take a look at it. Also, download GGDT. It's a simulation tool made by D_Hall on this forum, and can help you design your pneumatic gun.
  • 0

User avatar
kjjohn
1st Lieutenant
1st Lieutenant
 
Posts: 270
Joined: Sat Jul 11, 2009 3:54 pm
Reputation: 0

Unread postAuthor: clemsonguy1125 » Wed Apr 14, 2010 8:43 pm

or a small welding tank, ive seen one n the showcase that can be taken past 500psi
  • 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: Technician1002 » Thu Apr 15, 2010 1:34 pm

The air resivour, Is this for a chamber or is this bulk storage for on site shooting, much like a paintball tank?

This is important as the size of the port will vary greatly depending on the supply rate required. A chamber to connect directly to a QEV will need a large fitting and small tank. A tank to re supply a launcher through a regulator to a lower pressure can be something else such as a Nitrogen or Argon welding cylinder, or for lower pressure but higher volume, a BBQ propane tank (up to 300 PSI).
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: bl00dwolf » Fri Apr 16, 2010 2:41 pm

its its supposed to be a small tank for on site shooting. also this might be a stupid question. but the gun im making i decided to make it fire using a home made poppet valve. im wondering will the air pressure really make it more difficult to open the valve?
  • 0


bl00dwolf
Private
Private
 
Posts: 6
Joined: Wed Apr 14, 2010 7:56 pm
Reputation: 0

Unread postAuthor: mark.f » Fri Apr 16, 2010 2:55 pm

I would buy a small HPA rig (tank, regulator, airline fittings, etc.) premade from a paintball shop or industrial supply.

If you want to supply an air reservoir on the cannon with a tank, to 500 PSI, it would have to be a very large tank with slightly higher than 500 PSI in it, or a smaller tank with much higher pressures. Neither of which can be built easily or safely by a hobbyist.
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3464
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 21

Unread postAuthor: bl00dwolf » Fri Apr 16, 2010 3:34 pm

ok here is an example of the gun (please excuse the crappiness of it but i hope i get my point across)

Image

Image
  • 0


bl00dwolf
Private
Private
 
Posts: 6
Joined: Wed Apr 14, 2010 7:56 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: bl00dwolf » Fri Apr 16, 2010 3:35 pm

oh and the two lines are supposed to be pointing to the barrel incase you didn't figure that out
  • 0


bl00dwolf
Private
Private
 
Posts: 6
Joined: Wed Apr 14, 2010 7:56 pm
Reputation: 0

Unread postAuthor: Gun Freak » Fri Apr 16, 2010 3:39 pm

You can edit your post, you know.

It will be very hard to pull that trigger unless the bore is like a 1/4", and your trigger system looks very flimsy.
  • 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: bl00dwolf » Fri Apr 16, 2010 3:45 pm

i know but its just an example. im gonna find a way to intergrate a valve hammer that will have enough force to push it open but i have to learn how to make one first.
  • 0


bl00dwolf
Private
Private
 
Posts: 6
Joined: Wed Apr 14, 2010 7:56 pm
Reputation: 0

Unread postAuthor: Gun Freak » Fri Apr 16, 2010 3:52 pm

If you are going this complex as a first build, just make a piston valve.
  • 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: twizi » Fri Apr 16, 2010 4:02 pm

here get a mead fluid dynamics qev 1/2 get a 12oz paintball tank and a 1/2 barrel and a 1/4 qev this will take 700psi and more and is easy to open the trigger
  • 0

dont play with airsofter with 1000$ gun and play with a 5 dollar pair of glasses
User avatar
twizi
Colonel
Colonel
 
Posts: 511
Joined: Thu Nov 27, 2008 9:04 pm
Location: up yours
Reputation: 0

Unread postAuthor: bl00dwolf » Fri Apr 16, 2010 4:27 pm

ok thanks guys sounds like qev is the way to go. im probably gonna have to make some of that stuff myself though becuase there isn't a paintball show for miles around here.
  • 0


bl00dwolf
Private
Private
 
Posts: 6
Joined: Wed Apr 14, 2010 7:56 pm
Reputation: 0

Unread postAuthor: Gun Freak » Fri Apr 16, 2010 5:02 pm

You don't need a paintball tank, you can use a brass or galvanized, or something similar, nipple.
  • 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: twizi » Fri Apr 16, 2010 7:53 pm

i was giving my simple idea of easily constructing a qev gun but yes you can use black iron or galvinsed or brass or copper
  • 0

dont play with airsofter with 1000$ gun and play with a 5 dollar pair of glasses
User avatar
twizi
Colonel
Colonel
 
Posts: 511
Joined: Thu Nov 27, 2008 9:04 pm
Location: up yours
Reputation: 0

Next

Return to General Spud Cannon Related

Who is online

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

Reputation System ©'