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 19 users online :: 5 registered, 0 hidden and 14 guests


Most users ever online was 106 on Sat Jun 14, 2014 4:35 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

2" T Piston Valve

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: airpress » Fri Aug 17, 2012 5:18 pm

*little accident*
I tested the cannon in my "garden house" where I make my cannons.
I placed the cannon on my workbench. Prezzurized it to 4bars.
Keep in mind that in front off the barrel there was the door of the gardenhouse with glass in it. The door stood open in front off the cannon. The distance between the door and the connection for screwing a barrel on was something like 3m.

I launched the cannon but freakin hell, the glass was shattered by the air.
The glass was 3mm thick. And the strange thing of all in the window there is a hole that is around 20cm in diameter. :p There's still glass in the door except the round hole that's vanished. :p
Image

Tomorrow I have put a new one in. :p

Pics tomorrow.
  • 0

Last edited by airpress on Sat Aug 18, 2012 10:30 am, edited 2 times in total.
User avatar
airpress
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Mon Nov 15, 2004 12:59 pm
Country: Belgium (be)
Reputation: 5

Unread postAuthor: PotatoEnemy17 » Fri Aug 17, 2012 5:23 pm

As I said...THIS CANNON IS EPIC!
  • 0


PotatoEnemy17
Staff Sergeant
Staff Sergeant
 
Posts: 100
Joined: Tue Apr 10, 2012 6:33 pm
Reputation: 0

Unread postAuthor: evanmcorleytv » Fri Aug 17, 2012 10:57 pm

[quote="airpress"]Good news!

The piston works perfect with the valve upgrade!
More info tomorrow.
Here a few pics with everything mounted except the barrel and pressure gauge.

Good, now please cut a groove into your piston, and install an O ring, so your performance can increase immensely!
  • 0


evanmcorleytv
Major
Major
 
Posts: 350
Joined: Sat Jun 19, 2010 3:44 pm
Location: Tuscaloosa, AL
Reputation: 0

Unread postAuthor: silentkill12345 » Sat Aug 18, 2012 1:26 am

hey if you dont want to unscrew your filling nipple every time (quick conect) just put a T in you bal valve with on one side nothing (air escapen) and the other side your nippel :) good idea?
looks verry good btw :) and make a foto of your door instead of some nice paint drawings ;) lol
  • 0

User avatar
silentkill12345
Specialist
Specialist
 
Posts: 47
Joined: Thu Jul 19, 2012 6:40 am
Location: BELGIUM
Reputation: 0

Unread postAuthor: airpress » Sat Aug 18, 2012 4:46 am

PotatoEnemy17 wrote:As I said...THIS CANNON IS EPIC!


Thx. :)

evanmcorleytv wrote:Good, now please cut a groove into your piston, and install an O ring, so your performance can increase immensely!


I haven't a lathe a home. I'm happy enough when it works without o-rings. :p

silentkill12345 wrote: and make a foto of your door instead of some nice paint drawings lol

I couldn't take one, it was already dark.
This afternoon a massive update with pictures from cannon with barrel and one from the door.
  • 0

User avatar
airpress
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Mon Nov 15, 2004 12:59 pm
Country: Belgium (be)
Reputation: 5

Unread postAuthor: Mimikool » Sat Aug 18, 2012 6:53 am

Looks like mine, mine has a 1.5 QEV instead.

here is some pictures and vids but the topic is not updated, now i shoot at 25bar and use a plastic piston, lighter:
http://patator.frbb.net/t8285p210-fonct ... =jusqu+%E0

I use a 1300*26mm barrel.

Very impressive anyway!


Sorry if you already said that, but how much pressure will you use, and what the diameter of your barrel ?
  • 0

User avatar
Mimikool
Corporal
Corporal
 
Posts: 66
Joined: Sun Jan 09, 2011 5:03 am
Reputation: 0

Unread postAuthor: airpress » Sat Aug 18, 2012 8:12 am

I will use a 75mm PN16 pvc pipe as barrel. The length is 1,4m.
I will slighty build up the pressure. I don't want to brake my reducer by the slam from the piston. :p

Here 2 pics from the door.
Image
Image

It's unbelievable that it has the shape of a circle. :P
  • 0

Last edited by airpress on Sat Aug 18, 2012 10:32 am, edited 2 times in total.
User avatar
airpress
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Mon Nov 15, 2004 12:59 pm
Country: Belgium (be)
Reputation: 5

Sponsored

Sponsor
 


Unread postAuthor: PotatoEnemy17 » Sat Aug 18, 2012 8:27 am

So you don't actually have to but something in the barrel to shoot. The air is enough to kill you! :D
  • 0


PotatoEnemy17
Staff Sergeant
Staff Sergeant
 
Posts: 100
Joined: Tue Apr 10, 2012 6:33 pm
Reputation: 0

Unread postAuthor: airpress » Sat Aug 18, 2012 8:29 am

Should this be from the vortex or something?
  • 0

User avatar
airpress
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Mon Nov 15, 2004 12:59 pm
Country: Belgium (be)
Reputation: 5

Unread postAuthor: PotatoEnemy17 » Sat Aug 18, 2012 8:33 am

Well if you put your hand over the barrel and fire it, it would hurt, right?
  • 0


PotatoEnemy17
Staff Sergeant
Staff Sergeant
 
Posts: 100
Joined: Tue Apr 10, 2012 6:33 pm
Reputation: 0

Unread postAuthor: airpress » Sat Aug 18, 2012 8:38 am

Yes indeed. :P

Pffffff, I can't work in the gardenhouse, its over 40degrees inside.
It's incredible warm here in Belgium since 2days.

Edit:
Installed the pressure gauge. Mounted the barrel. Now waiting some hours until the thread sealant has hardend.
  • 0

User avatar
airpress
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Mon Nov 15, 2004 12:59 pm
Country: Belgium (be)
Reputation: 5

Unread postAuthor: PotatoEnemy17 » Sat Aug 18, 2012 10:12 am

If your barrel is big enough, try shooting toilet paper rolls out of it. :D
  • 0


PotatoEnemy17
Staff Sergeant
Staff Sergeant
 
Posts: 100
Joined: Tue Apr 10, 2012 6:33 pm
Reputation: 0

Unread postAuthor: airpress » Sat Aug 18, 2012 10:29 am

I will look for different barrels. :)

Pressure gauge.
Image
  • 0

User avatar
airpress
Staff Sergeant
Staff Sergeant
 
Posts: 119
Joined: Mon Nov 15, 2004 12:59 pm
Country: Belgium (be)
Reputation: 5

Unread postAuthor: silentkill12345 » Sat Aug 18, 2012 12:57 pm

yes i can imagine that it is 40°C inside :)
again, it looks verry good :)
nice window btw lol
  • 0

User avatar
silentkill12345
Specialist
Specialist
 
Posts: 47
Joined: Thu Jul 19, 2012 6:40 am
Location: BELGIUM
Reputation: 0

Unread postAuthor: MrCrowley » Sat Aug 18, 2012 5:12 pm

airpress wrote:I don't want to brake my reducer by the slam from the piston. :p
With a decent bumper it should be fine. This cannon is destined for 500psi :D

It's a shame you taped the pressure gauge in to the fittings though, would've been better to use a reducing 3"-1" tee and then 1"-1/2" bushing and a 1/2"-1/4" bushing.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10177
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

PreviousNext

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'