what is better for chamber ?

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
Post Reply
User avatar
nightshot
Private 2
Private 2
Posts: 27
Joined: Mon Dec 17, 2007 7:36 am
Been thanked: 1 time

Sun Jan 27, 2008 9:32 am

i´m going to make a pneumatic marble or bb gun, but, i dont know what is the better chamber, a pvc pipe or a 500ml cola bottle ...
Last edited by nightshot on Sun Jan 27, 2008 9:46 am, edited 2 times in total.
Top
User avatar
frogy
Corporal 2
Corporal 2
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio

Sun Jan 27, 2008 9:36 am

A pressure rated (Schedule 40\80\120) pipe with pressure rated fitting is much better than a cola bottle, but it will cost you some more...

A Cola bottle is sufficient, and if it fails, it will probably just tear in half without putting you in much danger...

Keep in mind that it can explode though... A 1 liter bottle can hold decent pressure though.
-FrOgY-

I wish people would stop needing a better signature!
Top
User avatar
Hubb
First Sergeant 2
First Sergeant 2
Posts: 2390
Joined: Mon May 28, 2007 8:39 am
Location: South Georgia
Contact:
Contact Hubb

Sun Jan 27, 2008 9:36 am

Use the pipe. It will be able to hold a lot more pressure and is more customizable than a bottle.
Top
User avatar
bigbob12345
Staff Sergeant
Staff Sergeant
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington

Sun Jan 27, 2008 9:38 am

Just spend a couple extra bucks and go with the pipe
Top
User avatar
nightshot
Private 2
Private 2
Posts: 27
Joined: Mon Dec 17, 2007 7:36 am
Been thanked: 1 time

Sun Jan 27, 2008 9:41 am

but i dont have a compressor, i will use my bike pump....
how much PSI can i make with that ?
Top
User avatar
Hubb
First Sergeant 2
First Sergeant 2
Posts: 2390
Joined: Mon May 28, 2007 8:39 am
Location: South Georgia
Contact:
Contact Hubb

Sun Jan 27, 2008 9:43 am

However much the pump is rated for. Considering a marble gun, the chamber isn't going to be that big. With that considered, I can pump my pneumatic up (2" x 12" chamber) to 80psi with only 5 strokes. Your chamber will probably be smaller than that.
Top
User avatar
frogy
Corporal 2
Corporal 2
Posts: 603
Joined: Mon May 29, 2006 1:24 pm
Location: Ohio

Sun Jan 27, 2008 9:45 am

If you have any power in your arms or any weight in your body you can pump it or even "jump" while pushing down with your arms to at least 80 psi...
-FrOgY-

I wish people would stop needing a better signature!
Top
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6572
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:
Contact jrrdw

Donating Members

Sun Jan 27, 2008 10:24 am

You can also build your own high pressure hand pump. Like this one. Is this going to be a 'sniper' type gun?
Top
User avatar
BigGrib
Corporal 2
Corporal 2
Posts: 652
Joined: Mon Oct 01, 2007 11:43 pm
Location: TriCities, WA
Contact:
Contact BigGrib

Sun Jan 27, 2008 11:27 am

nightshot wrote:i´m going to make a pneumatic marble or bb gun, but, i dont know what is the better chamber, a pvc pipe or a 500ml cola bottle ...
I really wanna slap you for asking that question.
Yea, that's definitely going to get you at least a tazer.
<a href="">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
Top
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6572
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:
Contact jrrdw

Donating Members

Sun Jan 27, 2008 12:10 pm

BigGrib wrote:
nightshot wrote:i´m going to make a pneumatic marble or bb gun, but, i dont know what is the better chamber, a pvc pipe or a 500ml cola bottle ...
I really wanna slap you for asking that question.
Don't taze him bro! <a href="http://plugin.smileycentral.com/http%25 ... /page.html" target="_blank"><img src="http://smileys.smileycentral.com/cat/3/3_12_14.gif" alt="SmileyCentral.com" border="0"><img border="0" src="http://plugin.smileycentral.com/http%25 ... e.gif"></a>
Top
BlackWater18
Private 2
Private 2
Posts: 20
Joined: Sun Jan 20, 2008 2:47 pm

Sun Jan 27, 2008 2:11 pm

Or if you would have a car available where you are shooting you could get a fairly cheap DC power Air pump, that hooks into your car cig lighter. Thats what I use to pump up my water rockets. And I believe you can get them fairly cheap to. I may be wrong tho. But I dont know if you have access to a car or not. Just a suggestion though.
Top
User avatar
SpudFarm
First Sergeant 3
First Sergeant 3
Posts: 2571
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area

Donating Members

Sun Jan 27, 2008 2:52 pm

try the bottle at first if it is the right thing for you use the same barrel and valve and upgrade to a pvc or steel chamber. i would go with steel or copper on a gun that small bechause then you can use a car DC compressor and use 300psi in it. and steel are not that much more expensive than pvc and in my opinion it is a better option since you may be unlucky and drop it. :)
Top
Post Reply

Return to “Pneumatic Cannons”