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 44 users online :: 3 registered, 0 hidden and 41 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

Almost finished Piston cannon

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

Almost finished Piston cannon

Unread postAuthor: bigbob12345 » Mon Jan 21, 2008 6:41 pm

Ive been working at this for a while and Im finnally almost done.Today I went to lowes to get some 1.5in sdr21 and got a ten foot stick for 4 bucks.I also got some other stuff to finish it.The chamber is 32in of 2in pipe.And the barrel is five feet of 1.5in sdr21.

heres some pictures

The piston
Image

Sealing face
Image

Piston with bumper
Image

Modded plug with exhaust assembly
Image

secondary champer to help piston seal
Image

The barrel
Image

The full cannon put together
Image


I didnt put it in the show case section because it is not yet finished.Any comment/suggestions are highly appreciated.If you want more info on the piston visit this link
http://www.spudfiles.com/forums/start-t ... 12801.html

Edit:250 posts red star yaah :wav:


EditEdit:Could some body please GGDT this for me
  • 0

User avatar
bigbob12345
Major General
Major General
 
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington
Reputation: 0

Unread postAuthor: bigbob12345 » Thu Jan 24, 2008 9:09 pm

Okay sorry for the double post but I finished this thing today and it was really powerful :twisted: .I have made piston valves before and I would like some comments on how I could make the valve even better and more powerful than it already is.
by the why I dont know why but this valve is very quiet for some reason.All my other piston guns have been very loud. Is this a bad thing.
And a GGDT on it would be nice too.
  • 0

User avatar
bigbob12345
Major General
Major General
 
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington
Reputation: 0

Unread postAuthor: elitesniper » Thu Jan 24, 2008 9:11 pm

i think your pilot volume is way to big
  • 0

User avatar
elitesniper
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Sat Oct 13, 2007 8:40 pm
Reputation: 0

Unread postAuthor: daberno123 » Thu Jan 24, 2008 9:13 pm

You got 1.5" sdr 21 at lowes? I've never seen any there
  • 0

User avatar
daberno123
Colonel
Colonel
 
Posts: 594
Joined: Mon Nov 19, 2007 5:56 pm
Location: Ohio
Reputation: 0

Unread postAuthor: bigbob12345 » Thu Jan 24, 2008 9:21 pm

elitesniper wrote:i think your pilot volume is way to big



What do you mean I have like no pilot volume at all its just a cut down plug that goes straight into the tee.You might mean that thing at the back of it thats a secondary chamber that I use to seal the piston beacause it doesnt seal when I just pump into it with my bike pump.

And daberno I was surprised when I saw it there too but they have lots of it its not all the lowes around me its just this one thats closest to my house.
  • 0

User avatar
bigbob12345
Major General
Major General
 
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington
Reputation: 0

Unread postAuthor: daberno123 » Thu Jan 24, 2008 9:22 pm

lucky you. :lol: next time i go i will have to root around in the back of the rack. I was able to find pressure rated 3" and 4" pipe doing that.
  • 0

User avatar
daberno123
Colonel
Colonel
 
Posts: 594
Joined: Mon Nov 19, 2007 5:56 pm
Location: Ohio
Reputation: 0

Unread postAuthor: bigbob12345 » Thu Jan 24, 2008 9:24 pm

Yea thats where I found it in the back rack.
  • 0

User avatar
bigbob12345
Major General
Major General
 
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: daberno123 » Thu Jan 24, 2008 9:27 pm

Was it all dirty and such when you got it? Cuz mine were. I had to give them a bath before using them :wink:
  • 0

User avatar
daberno123
Colonel
Colonel
 
Posts: 594
Joined: Mon Nov 19, 2007 5:56 pm
Location: Ohio
Reputation: 0

Unread postAuthor: bigbob12345 » Thu Jan 24, 2008 9:29 pm

Yea most of them were but the ones under neath all the dirty ones are pretty clean as you can tell by the pictures of the barrel.
Edit:Can anyone do a GGDT
and does anyone have any advice to make the piston better
  • 0

User avatar
bigbob12345
Major General
Major General
 
Posts: 1516
Joined: Sat Dec 01, 2007 9:13 am
Location: Mercer Island,Washington
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'