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 43 users online :: 5 registered, 0 hidden and 38 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Best 3/4 Bore Cannon Possible

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

Unread postAuthor: jackssmirkingrevenge » Sat Jul 31, 2010 6:39 am

BeaverRat wrote:why would it matter how long the piston is?


Because if it's too short, it might be a bit wobbly and could potentially jam.
  • 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: Crna Legija » Sat Jul 31, 2010 9:39 am

and if it very long it will weight a lot and be slow
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: clemsonguy1125 » Sat Jul 31, 2010 10:08 am

Also if its to long it wont be able to move back enough and have poor flow .
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Unread postAuthor: BeaverRat » Sat Jul 31, 2010 1:35 pm

Ok...

I wonder, how would a hot glue molded piston withstand the force required of a 1 inch piston valve?
  • 0

User avatar
BeaverRat
Master Sergeant
Master Sergeant
 
Posts: 161
Joined: Wed May 05, 2010 9:15 pm
Reputation: 0

Unread postAuthor: spudtyrrant » Sat Jul 31, 2010 1:58 pm

BeaverRat wrote:Ok...

I wonder, how would a hot glue molded piston withstand the force required of a 1 inch piston valve?
easily, i have used them up to 450psi without damage to the piston. :wink:
  • 0

I ♥ ♣'in baby seals
User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Unread postAuthor: BeaverRat » Sat Jul 31, 2010 2:07 pm

Ok, to make them, do you just lube up the pipe size that the piston slides in and pour in hot glue? How do you attatch the sealing face to the piston, epoxy, would it bond to both hot glue and rubber?
  • 0

User avatar
BeaverRat
Master Sergeant
Master Sergeant
 
Posts: 161
Joined: Wed May 05, 2010 9:15 pm
Reputation: 0

Unread postAuthor: clemsonguy1125 » Sat Jul 31, 2010 2:51 pm

Take a rubber sealing face and put a screw with a washer in it flat in the lubed up tube, then pour the hot glue in
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Sponsored

Sponsor
 


Unread postAuthor: BeaverRat » Wed Aug 04, 2010 11:42 pm

Ok, does anyone have any ideas as to what bumper for the piston I could use?

Thanks
  • 0

User avatar
BeaverRat
Master Sergeant
Master Sergeant
 
Posts: 161
Joined: Wed May 05, 2010 9:15 pm
Reputation: 0

Unread postAuthor: clemsonguy1125 » Wed Aug 04, 2010 11:56 pm

A spring, tennisball, foam backer rod, silicon or rubber tubing anything that will absorb the force
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Previous

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'