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 45 users online :: 5 registered, 0 hidden and 40 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Pneumatic 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

Pneumatic Plans

Unread postAuthor: mikemurph » Wed May 27, 2009 12:15 pm

I'm crossing over to the pneumatic side, I've got my sprinkler valve modified and my plans are all drawn up, tell me what you think about this gun
Image
Its a pretty simple design, but I think it should work pretty well. Tell me what you think
  • 0

User avatar
mikemurph
Sergeant
Sergeant
 
Posts: 99
Joined: Wed Apr 29, 2009 9:43 pm
Reputation: 0

Unread postAuthor: spudtyrrant » Wed May 27, 2009 12:19 pm

did you plan on making the stock out of wood or pvc if you use pvc be sure to seal it off from the main chamber so you have better flow but besides that everything looks ship-shape
  • 0

User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Unread postAuthor: mikemurph » Wed May 27, 2009 12:23 pm

PVC stock, and by the way, do the have connectors that can joint pipes at weird angles not just 90? I want the stock to be detachable.
  • 0

User avatar
mikemurph
Sergeant
Sergeant
 
Posts: 99
Joined: Wed Apr 29, 2009 9:43 pm
Reputation: 0

Unread postAuthor: spudtyrrant » Wed May 27, 2009 12:28 pm

mikemurph wrote:PVC stock, and by the way, do the have connectors that can joint pipes at weird angles not just 90? I want the stock to be detachable.

they have 90's and 45's for just bends if you want an angle other that that since its not going to be hold pressure you could dip them in boiling water for 30 seconds and carefully bend them to the angle you want
  • 0

User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Unread postAuthor: Technician1002 » Wed May 27, 2009 5:36 pm

spudtyrrant wrote:
mikemurph wrote:PVC stock, and by the way, do the have connectors that can joint pipes at weird angles not just 90? I want the stock to be detachable.

they have 90's and 45's for just bends if you want an angle other that that since its not going to be hold pressure you could dip them in boiling water for 30 seconds and carefully bend them to the angle you want


Boiling water is not hot enough for most PVC bending. You need to heat PVC to the point it becomes like a garden hose. It must be heated evenly as it is very easy to scorch (brown) or burn. For Christmas decorations I make PVC candy canes. Straight PVC pipe is taped and painted to provide a candy cane stripe. The ends are plugged and pressure of about 10 PSI is applied to prevent flattening in the bend. It is gently heated above a camp stove (moving rapidly and rotated to heat a long section) and then wrapped onto a small bicycle rim and cooled.

EDIT I forgot to mention that surgical tubing with a knot in one end is perfect for this. Slide in, inflate, bend, deflate, and remove. No flattened bends.

I don't have pics of my process, but using a kitchen oven, the process is documented here, except they paint or tape after bending.

http://computerchristmas.com/christmas/link-how_to/HowToId-14/LowLimit-5
  • 0

Last edited by Technician1002 on Wed May 27, 2009 9:29 pm, edited 2 times in total.
User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: Moonbogg » Wed May 27, 2009 6:37 pm

Your other cannons were pneumatic as well weren't they?
  • 0

User avatar
Moonbogg
Major General
Major General
 
Posts: 1375
Joined: Mon Oct 13, 2008 10:20 pm
Location: whittier, CA USA
Reputation: 0

Unread postAuthor: MountainousDew » Wed May 27, 2009 8:01 pm

Moonbogg wrote:Your other cannons were pneumatic as well weren't they?


Nah, this was the guy who made all those mini-combustions...
  • 0

<a href="http://s709.photobucket.com/albums/ww95/JKazkid/?action=view&current=MDSig.jpg" target="_blank"><img src="http://i709.photobucket.com/albums/ww95/JKazkid/MDSig.jpg" border="0" alt="Photobucket"></a>
User avatar
MountainousDew
2nd Lieutenant
2nd Lieutenant
 
Posts: 230
Joined: Tue Apr 14, 2009 6:06 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Moonbogg » Wed May 27, 2009 8:48 pm

MountainousDew wrote:
Moonbogg wrote:Your other cannons were pneumatic as well weren't they?


Nah, this was the guy who made all those mini-combustions...


Ooooohh. OK got it.
  • 0

User avatar
Moonbogg
Major General
Major General
 
Posts: 1375
Joined: Mon Oct 13, 2008 10:20 pm
Location: whittier, CA USA
Reputation: 0

Unread postAuthor: spudtyrrant » Thu May 28, 2009 9:47 am

Technician1002 wrote:Boiling water is not hot enough for most PVC bending. You need to heat PVC to the point it becomes like a garden hose. ]
boiling water seems to work for me i use it to flatten pvc into sheets and flare pipe all the time. your method works too. boiling water just the way I've always done it
  • 0

User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'