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 74 users online :: 3 registered, 0 hidden and 71 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

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

3/4" qev cannon ggdt fps

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

3/4" qev cannon ggdt fps

Unread postAuthor: ALIHISGREAT » Sat Oct 06, 2007 1:08 pm

could someone put this into ggdt form me to get the fps and range.

a 3/4" qev
1.5" 90cm long chamber
3/4" 130cm long barrel
5g paintball projectile.
about 50cc of dead space.
thanks.
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Oct 06, 2007 1:10 pm

pressure, piloting method?
  • 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: ALIHISGREAT » Sat Oct 06, 2007 1:14 pm

:oops: 100 psi and 140 psi and piloted by a 1/4" blowgun :oops: i'm soo dumb
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Oct 07, 2007 7:52 am

You're looking at around 530 fps for 100 psi and 595 fps for 140 psi.
  • 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: windshrike » Sun Oct 07, 2007 7:57 am

Aren't PBs closer to 3g? I'm not sure but I heard this somewhere on SF.
  • 0

User avatar
windshrike
Sergeant Major
Sergeant Major
 
Posts: 178
Joined: Thu Jun 28, 2007 4:23 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Oct 07, 2007 8:02 am

windshrike wrote:Aren't PBs closer to 3g? I'm not sure but I heard this somewhere on SF.


looks like you're right.
  • 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: ALIHISGREAT » Sun Oct 07, 2007 8:08 am

i saw somewhere they were 3.5g and somewhere else they were 5.5, maybe it depends on the brand, could you possibly put the same through ggdt but with a 3g paintball? thanks.
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: spanerman » Sun Oct 07, 2007 8:21 am

4g by my scales....16.7mm/0.661''
  • 0

Image

spanerman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 438
Joined: Sun Sep 17, 2006 2:54 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Oct 07, 2007 8:26 am

for 3.5 grams it's around 600 fps for 100psi and 650 fps for 140 psi.
  • 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: spanerman » Sun Oct 07, 2007 8:30 am

^more than enough lol...and i sujest porting any paintball barrel...adds accuracy....and makes it a little less loud :)
  • 0

Image

spanerman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 438
Joined: Sun Sep 17, 2006 2:54 pm
Reputation: 0

Unread postAuthor: ALIHISGREAT » Sun Oct 07, 2007 8:44 am

jackssmirkingrevenge wrote:for 3.5 grams it's around 600 fps for 100psi and 650 fps for 140 psi.


:D 650fps :D

and i won't need proting cos i am going to make a supressor after i buy the 22mm pvc that you used for your barrel.
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: spanerman » Sun Oct 07, 2007 8:46 am

ahh ok kool, that pvc wont hold the wieght of a heavy silencer..mind...you might need some supports
  • 0

Image

spanerman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 438
Joined: Sun Sep 17, 2006 2:54 pm
Reputation: 0

Unread postAuthor: ALIHISGREAT » Sun Oct 07, 2007 8:51 am

yer its going inside my 3/4" pressure rated pvc which has a id of 22mm.
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: ALIHISGREAT » Sun Oct 07, 2007 9:00 am

spanerman wrote:4g by my scales....16.7mm/0.661''

i though you were using .68 paintballs...
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: spanerman » Sun Oct 07, 2007 10:10 am

so did i......lol
  • 0

Image

spanerman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 438
Joined: Sun Sep 17, 2006 2:54 pm
Reputation: 0

Next

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'