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 :: 4 registered, 0 hidden and 57 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Sprinkler Pneumatic Sniper

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

Unread postAuthor: geardog32 » Sat Sep 12, 2009 12:13 pm

you should check your local ace or whatever you have too. the ace by me has stuff up to 4 inch, and the lowes and homedepot dont have anything over 2.
  • 0

(\ /)
(0.o)
(><) Copy the bunny to your sig and help him achieve world domination.
User avatar
geardog32
Master Sergeant
Master Sergeant
 
Posts: 173
Joined: Mon Jun 22, 2009 9:20 pm
Reputation: 0

Unread postAuthor: Reactor4 » Fri Oct 02, 2009 10:03 pm

okay i didnt read all of the comments but if you had access to a lathe you could use UHMW or some kind of polyethylene, possibly even teflon to make a piston. just a suggestion, i've made one out of UHMW before.
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: Northir » Fri Oct 02, 2009 10:09 pm

yea ive moved on to bigger better things, linky
http://www.spudfiles.com/forums/northirs-cannons-t19318.html
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: Reactor4 » Fri Oct 02, 2009 10:11 pm

ohhhhh! veryy niczzze GB cannon! Is good!
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: Northir » Fri Oct 02, 2009 10:21 pm

yea im quite proud of it i got the volume down now to where the cannon doesnt lose power but has less of a bang
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: Reactor4 » Fri Oct 02, 2009 10:28 pm

nice man. and yea, that always seems to be the compromise when it comes to tweaking the volume.
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: Northir » Sat Oct 03, 2009 5:14 am

working on making the combustion run on propane, but i think my #s are off, http://www.burntlatke.com/ft_live.html says ill need 20" of 1" pipe for my meter, or 24" of 3/4'' pipe, the chamber is 3" abs by 24"
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Sat Oct 03, 2009 5:54 am

Northir wrote:working on making the combustion run on propane, but i think my #s are off, http://www.burntlatke.com/ft_live.html says ill need 20" of 1" pipe for my meter, or 24" of 3/4'' pipe, the chamber is 3" abs by 24"


It does sound a bit off, this is what I got:
  • 0

Attachments
fuel calc.GIF
fuel calc.GIF (17.53 KiB) Viewed 396 times
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Reactor4 » Sat Oct 03, 2009 11:13 am

yea a 20" length of 1" pvc seems a little big for metering propane. i made a combustion tennis ball cannon with a 4 x 18" chamber and if i remember correctly, i think my meter pipe was, er, like maybe 6" long and 1/2" diameter.
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: Northir » Sun Oct 04, 2009 8:28 am

i guess i should have noted my tank is 50 psi not 90, either that or my pressure gauge is borked
  • 0

User avatar
Northir
Staff Sergeant
Staff Sergeant
 
Posts: 123
Joined: Sun Sep 06, 2009 3:04 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Oct 04, 2009 8:59 am

Northir wrote:i guess i should have noted my tank is 50 psi not 90, either that or my pressure gauge is borked


In that case pressure is about half, so the length of the metre pipe approximately doubles.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Reactor4 » Sun Oct 04, 2009 11:24 am

oh, before i forget, has anyone every tried using acetylene gas instead of propane? I have an oxy-gas welding torch and just thought of trying it. :idea:
  • 0

User avatar
Reactor4
Specialist
Specialist
 
Posts: 58
Joined: Fri Oct 02, 2009 9:56 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Oct 04, 2009 11:36 am

Typing "acetylene" into the search button would have answered your question, use it :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: al-xg » Sun Oct 04, 2009 11:56 am

That is the search button, not acetylene :)
  • 0

User avatar
al-xg
Colonel
Colonel
 
Posts: 643
Joined: Fri Jan 19, 2007 12:29 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Oct 04, 2009 11:58 am

al-xg wrote:That is the search button, not acetylene :)


Most poignant clarification, cheers :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

PreviousNext

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'