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 57 users online :: 4 registered, 1 hidden and 52 guests


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

Registered users: Bing [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

BFG #7

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

BFG #7

Unread postAuthor: farcticox1 » Sun May 07, 2017 9:47 am

That's right, you know it

airsoft-pellet-guns/topic26444.html

Time to call it finished, compressed air (135 psi) powered, 10mm ball bearing ammo, semi automatic, magazine holds 10 + 1 in ready. The stock is the chamber (1 1/2" pvc), barrel is 1/2" OD seamless stainless tubing (10.2mm ID) 700mm long. Main valve (3/8) is controlled by pilot valve (1/8) pulse, this pulse can be adjusted by the air restrictor to give different times/power. Valves are pilot air actuated 5/2 spring return, but had to add external pilot air to main valve as I was feeding it through an exhaust port not the P port. :shock:
Mostly made from scrap aluminium/stainless/pvc, about 200hrs+ work, hand tools and a drill press only, couple of the fittings were Tig welded, but only because I didn't want to buy anything for it. Front grip is a grinder handle :idea:
It is 1070mm/42" overall length, 6.4kg/14lbs in weight.

1.jpg
2.jpg
3.jpg
air lines.jpg
  • 0

Last edited by farcticox1 on Sat Aug 05, 2017 2:42 pm, edited 2 times in total.
User avatar
farcticox1
Captain
Captain
 
Posts: 331
Joined: Sun Mar 31, 2013 12:37 pm
Country: Canada (ca)
Reputation: 36

Re: BFG #7

Unread postAuthor: hectmarr » Mon May 08, 2017 10:42 am

A weapon's beauty! Does it work with Co2? I have in mind to make something similar semi-self. I have a "mockup" although the system I'm using is different. Great job, congratulations !! :bounce:
  • 0


hectmarr
Corporal
Corporal
 
Posts: 79
Joined: Sat May 07, 2016 3:49 pm
Country: Argentina (ar)
Reputation: 9

Re: BFG #7

Unread postAuthor: WizardNoodle » Mon May 08, 2017 2:01 pm

Awesome. What speeds and/or penetrating power do you get?
  • 0

Penetration is key

WizardNoodle
Specialist
Specialist
 
Posts: 56
Joined: Fri Feb 24, 2017 10:13 pm
Country: United States (us)
Reputation: 0

Re: BFG #7

Unread postAuthor: farcticox1 » Mon May 08, 2017 5:35 pm

I think Co2 would work just fine, would be portable with a regulated bottle. :idea:

Have only fired it at short range, but will go through 1/2" plywood at 14 feet. :shock:
  • 0

User avatar
farcticox1
Captain
Captain
 
Posts: 331
Joined: Sun Mar 31, 2013 12:37 pm
Country: Canada (ca)
Reputation: 36

Re: BFG #7

Unread postAuthor: Xamllew » Tue May 09, 2017 2:09 am

Honestly this beast makes me think of some sort of experimental german rail gun with all the bright steel. The machine-work is on another level as far as what I've seen around here. Just love the design of that bb magazine and the follower.
  • 0

If Liberalism is an illness then Conservatism must be brain cancer.
User avatar
Xamllew
Specialist
Specialist
 
Posts: 56
Joined: Sun Aug 21, 2016 11:00 pm
Location: Belgrade
Country: Serbia (rs)
Reputation: 9

Re: BFG #7

Unread postAuthor: farcticox1 » Sat Aug 05, 2017 1:50 pm

Adding some construction pictures cause I'm adding this link to Youtube. Also adding a video :D



001.jpg
002.jpg
003.jpg
004.jpg
005.jpg
006.jpg
007.jpg
008.jpg
009.jpg
010.jpg
011.jpg
012.jpg
013.jpg
014.jpg
015.jpg
016.jpg
017.jpg
018.jpg
019.jpg
020.jpg
021.jpg
022.jpg
  • 1

User avatar
farcticox1
Captain
Captain
 
Posts: 331
Joined: Sun Mar 31, 2013 12:37 pm
Country: Canada (ca)
Reputation: 36

Re: BFG #7

Unread postAuthor: hectmarr » Sat Aug 05, 2017 7:25 pm

:bounce: He fires his weapon beautifully, and the precision he has is good. I like it. :bounce:
  • 1


hectmarr
Corporal
Corporal
 
Posts: 79
Joined: Sat May 07, 2016 3:49 pm
Country: Argentina (ar)
Reputation: 9

Re: BFG #7

Sponsored

Sponsor
 


Re: BFG #7

Unread postAuthor: jackssmirkingrevenge » Sun Aug 06, 2017 6:18 am

I love it, especially that magazine feed that is simultaneously elegantly simple while unnecessarily complicated :D kudos!
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24593
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 87

Re: BFG #7

Unread postAuthor: farcticox1 » Sun Aug 06, 2017 6:26 am

Still not sure about the bipod, I think it needs to pivot slightly, might work on that today. :idea:

That was easy, removed locknut and did a bit of filing to let it swing

bipod mod (1).jpg
bipod mod (2).jpg
Max swing left or right
bipod mod (3).jpg
  • 0

User avatar
farcticox1
Captain
Captain
 
Posts: 331
Joined: Sun Mar 31, 2013 12:37 pm
Country: Canada (ca)
Reputation: 36

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'