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 61 users online :: 3 registered, 0 hidden and 58 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

1 gallon (or something like that)

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

1 gallon (or something like that)

Unread postAuthor: mobile chernobyl » Fri Jul 25, 2008 9:38 pm

Image
Image

1 Gallon (contains more volume, just a project name for it) is the precurser to 10 gallon my big spud gun planned in this thread
http://www.spudfiles.com/forums/project ... 15399.html

It features my palindrome valve. Its not a revolution in piston valves, but it just may be when it comes to Over the Counter high performance valves. 1 Gallon was a testing platform for this valve. This gun works great, way better than expected. Hopefully the same holds true for 10 gallon. The valve can be explained in more detail if desired, and after 10 gallon is complete I will post up CAD renderings with dimensions of both 1 gallon and 10 gallons valves so everyone can enjoy cheap, high performance piston valves.

People are probably wondering why I'm going on and on about the palindrome valve being better than the conventional, easily made piston valve. The main difference is that the barrel section of the valve (or the exit) does not extend into the T, or Cross fitting at all, which when it does, it hampers performance, creating alot of turbulance. Is this really a big deal? No if all you wanna do is chuck spuds, but if you want to be able to get the same speed you get with a piston valve with the barrel protruding into or past it, but at 10-15PSI less needed, than yea its nice. I wanted a more efficient valve for 10 gallon because I really dont want to have to pump it up to 100 PSI since it will take forever, So having greater efficiencys means I can pump it up less and get the same performance. Simple really 8)
  • 0

Last edited by mobile chernobyl on Fri Jul 25, 2008 9:43 pm, edited 1 time in total.
User avatar
mobile chernobyl
Colonel
Colonel
 
Posts: 732
Joined: Sun Dec 03, 2006 11:53 am
Reputation: 9

Unread postAuthor: blind909 » Fri Jul 25, 2008 9:41 pm

That is a helluva nice gun dude!
  • 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: MrCrowley » Fri Jul 25, 2008 9:42 pm

Looking nice, it might be good if you post some specs of the actual cannon itself, i'm sure more people will be asking.
  • 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: mobile chernobyl » Fri Jul 25, 2008 9:46 pm

complete specs and labled CAD renderings, as well as a parts list with current prices (OK that last one may be just a little bit overboard, but i'll try) will be posted up after my 10 gallon project is completed. Sorry but I'm just kinda pooped from trouble shooting 1 gallon tonight (turned out pool noodles DO NOT make good bumpers, I repead DON't USE THEM!! haha, the whole noodle bumper - about 5" long - got sucked into the intake of the sprinkler valve... wow)
  • 0

User avatar
mobile chernobyl
Colonel
Colonel
 
Posts: 732
Joined: Sun Dec 03, 2006 11:53 am
Reputation: 9

Unread postAuthor: starman » Sat Jul 26, 2008 12:06 am

Very clean gun mobile. It's not too many of us bother producing full CAD renderings on our cannons. I'm usually designing up to the last squirt of paint, then just glad to be finished with the thing.

While nice, it seems like the paint job needs a touch of something...some highlights, trim or camo treatment maybe...I can't put my finger on it really.

Otherwise excellent build!

Oh yes, a little more detail on your valve would be great.
  • 0

User avatar
starman
Donating Moderator
Donating Moderator
 
Posts: 3041
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC
Reputation: 0

Unread postAuthor: mobile chernobyl » Sat Jul 26, 2008 7:30 am

Sorry if I misworded myself, I will only be CAD'ing up the valve section of the gun, the rest of the gun is self explanitory i presume - couple of T's, 45's, 90's, and end caps, the rest is up to your imagination!

The paintjob - I agree. I think it would have looked a ton cooler if I painted it with a Base color of army green or black, then with a gray over coat, then took a sander to it and produced a rub-through look for the "vintage" look haha. But this is the first gun I've painted, so it looks pretty good. well At least im happy with it :D
  • 0

User avatar
mobile chernobyl
Colonel
Colonel
 
Posts: 732
Joined: Sun Dec 03, 2006 11:53 am
Reputation: 9

Unread postAuthor: Fnord » Sat Jul 26, 2008 8:47 am

(turned out pool noodles DO NOT make good bumpers, I repead DON't USE THEM!! haha, the whole noodle bumper - about 5" long - got sucked into the intake of the sprinkler valve... wow)


Since the foam in them is air-tight, they are crushed down to a very small size when the chamber is pressurized (about 1/8th @ 125psi). It probably wouldn't do much as a bumper like that.

Do you have a sketch with the valve's internal dimensions, by the way?
  • 0

Image
User avatar
Fnord
Major General
Major General
 
Posts: 2244
Joined: Tue Feb 13, 2007 9:20 pm
Location: Pripyat
Reputation: 7

Sponsored

Sponsor
 


Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'