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 60 users online :: 3 registered, 0 hidden and 57 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

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

Coaxial plans

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

Coaxial plans

Unread postAuthor: tater36 » Mon Apr 16, 2007 4:38 pm

Im going to build a coaxial piston valve gun and wondering if these plans sound good, im just going to put this stuff together and not glue it but when I get enough money for a bigger chamber then glue it. k, about 9'' of 2'' diameter pipe for the chamber, and 9''of 3/4'' for the barrel. A ball valve for pilot and the fill valve off a capped T joint near the valve. As a piston.... any suggestions? Some kind of pvc fitting, and what do i use as rubber to seal to the barrel? I saw a 2'' piston made of a bushing or something back on the forums but cant find it anymore. Give suggestions to make it better :D
  • 0

User avatar
tater36
Private First Class
Private First Class
 
Posts: 30
Joined: Tue Mar 27, 2007 9:02 pm
Reputation: 0

Unread postAuthor: lukemc » Mon Apr 16, 2007 5:32 pm

well 9" sounds a bit shortfor a coaxial but i havent been around coaxials too long so maybe its fine. for a 2" barrel 1 1/4" sch 40 couplings or end caps with a wrp or 2 of duct tape work well. rubbers not entirely necessary but helps seal better
  • 0

"Those who are different change the world. Those who are the same keep it that way"
User avatar
lukemc
Colonel
Colonel
 
Posts: 565
Joined: Sun Feb 25, 2007 8:48 am
Location: NY
Reputation: 0

Unread postAuthor: iPaintball » Mon Apr 16, 2007 6:24 pm

Also, an easy way to create a seal is to attach a 3/4" rubber coupling to the barrel so the piston presses up against it.
  • 0

User avatar
iPaintball
Colonel
Colonel
 
Posts: 695
Joined: Sun Mar 04, 2007 8:37 pm
Reputation: 0

Unread postAuthor: tater36 » Mon Apr 16, 2007 6:30 pm

also where can you get ahold of normal schrader valves in the US?
  • 0

User avatar
tater36
Private First Class
Private First Class
 
Posts: 30
Joined: Tue Mar 27, 2007 9:02 pm
Reputation: 0

Unread postAuthor: Blitz » Mon Apr 16, 2007 6:37 pm

I usually get 'em from Grainger or McMaster-Carr (www.grainger.com and www.mcmaster.com)
  • 0

User avatar
Blitz
Colonel
Colonel
 
Posts: 621
Joined: Sat Apr 07, 2007 1:48 am
Location: West Chicago, IL
Reputation: 0

Unread postAuthor: noname » Mon Apr 16, 2007 10:02 pm

You can usually pick up schrader valves from a hardware or automotive store. Lukemc, rubber is required to seal, unless your piston is made of rubber or the barrel has a rubber coupler on it.
  • 0

User avatar
noname
Lieutenant General
Lieutenant General
 
Posts: 2699
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA
Country: United States (us)
Reputation: 9

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'