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.
-
Dr.Doom
- Private

- Posts: 19
- Joined: Wed Oct 18, 2006 2:03 pm
- Location: Cincy, Ohio
-
Contact:
Thu Oct 19, 2006 10:06 am
Well I was thinking last night of Pnematic guns and compactability, would a design in which the air tank was a sheath around the barrel be possible? say if a coil was wrapped around saving space and keeping power. kinda like this:

And if not this, maybe an all metal with the tank actually welded to the barrel with a tube connecting externally to the barrel.
-
POS
- Specialist 3

- Posts: 395
- Joined: Thu Sep 14, 2006 4:19 pm
Thu Oct 19, 2006 12:09 pm
I dont think this can be a powerfull gun. The chamber is way to small fot the barrel, and way to long and thin. Not a good airflow I guess.
Why not make a Coaxal gun instead ?
BTW, I like the drawing.
-
Hotwired
- First Sergeant 3

- Posts: 2599
- Joined: Fri Oct 13, 2006 5:51 am
- Location: UK
Thu Oct 19, 2006 12:12 pm
Thats a long way for the air to go to just get to the valve...
Not a very efficient design methinks. It'll work of course but there are better chamber designs.
-
Dr.Doom
- Private

- Posts: 19
- Joined: Wed Oct 18, 2006 2:03 pm
- Location: Cincy, Ohio
-
Contact:
Thu Oct 19, 2006 12:26 pm
POS wrote:I dont think this can be a powerfull gun. The chamber is way to small fot the barrel, and way to long and thin. Not a good airflow I guess.
Why not make a Coaxal gun instead ?
BTW, I like the drawing.
I like my design but the more I think about it the more I think that the pressure won't release quick enough, kind of like a balloon slowly deflating instead of poping.
I'm kinda new to Pneumatics so I'm not really sure what a coaxal gun is...
I'm just trying to think of the most compact design I can possibly create without major loss of power.
while I'm at it, what exactly does the sprinkler do on pneumatics?
-
POS
- Specialist 3

- Posts: 395
- Joined: Thu Sep 14, 2006 4:19 pm
Thu Oct 19, 2006 1:37 pm
The sprinkler valve is a valve that opens very quickly. It gets triggered by a blowgun, a ball valve or some by electricity.
They are easy to mount and use, although you should mod them. I prefere a piston valve. Not so easy to make, but cheap, en best performance.
A coax pneumatic gun, is a gun with wich the cmaber is constructed arount the barrel. The barrel goes trough the chamber. Look at
spudwikifor more details. I learned a lot from that there.
This is a coaxal gun :

-
Dr.Doom
- Private

- Posts: 19
- Joined: Wed Oct 18, 2006 2:03 pm
- Location: Cincy, Ohio
-
Contact:
Thu Oct 19, 2006 1:47 pm
Thanks, yeah shortly after posting I read the wiki and now I feel dumb, prolly shoulda read that first...
So basically a coaxal is what I was going for there, hmm... I'll do some research.
-
POS
- Specialist 3

- Posts: 395
- Joined: Thu Sep 14, 2006 4:19 pm
Thu Oct 19, 2006 2:00 pm
May I recommand a over/under as a first gun. I myself made one out of galve steal. The design however wasn't that good, so I made a bether one. You can find it in the pneumatic showoff section, titled MB2. I have made a dual chamber there. Looks pretty nice. It fires like hell at 130 psi, and I am looking for a pump to get it up to 250 psi.
Right now it shoots 25 mm marbles trough a 30 mm wooden plate at a distance of 40 yards.
-
Dr.Doom
- Private

- Posts: 19
- Joined: Wed Oct 18, 2006 2:03 pm
- Location: Cincy, Ohio
-
Contact:
Thu Oct 19, 2006 2:19 pm
Yeah further thought makes me think, I should think simple for my first pneumatic, I did the same thing with my first combustion, I wanted to go all out, until I started building it then realizing, I'd never done this before, so I simplified and it turned out great (for a first at least)
-
frankrede
- Sergeant Major 2

- Posts: 3220
- Joined: Thu Jul 20, 2006 9:47 pm
- Has thanked: 1 time
- Been thanked: 1 time
Thu Oct 19, 2006 7:59 pm
hey man the gun looks good but it wouldn't work well.
Heres a site that has some plans for potato guns of the pneumatic variety.
members.aol.com/sph911
Welcome to spudfiles:D
Current project: Afghanistan deployment
-
POS
- Specialist 3

- Posts: 395
- Joined: Thu Sep 14, 2006 4:19 pm