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BFG #7

Posted: Sun May 07, 2017 9:47 am
by farcticox1
That's right, you know it

http://www.spudfiles.com/airsoft-pellet ... 26444.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.
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Re: BFG #7

Posted: Mon May 08, 2017 10:42 am
by hectmarr
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:

Re: BFG #7

Posted: Mon May 08, 2017 2:01 pm
by WizardNoodle
Awesome. What speeds and/or penetrating power do you get?

Re: BFG #7

Posted: Mon May 08, 2017 5:35 pm
by farcticox1
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:

Re: BFG #7

Posted: Tue May 09, 2017 2:09 am
by Xamllew
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.

Re: BFG #7

Posted: Sat Aug 05, 2017 1:50 pm
by farcticox1
Adding some construction pictures cause I'm adding this link to Youtube. Also adding a video :D

[youtube][/youtube]
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Re: BFG #7

Posted: Sat Aug 05, 2017 7:25 pm
by hectmarr
:bounce: He fires his weapon beautifully, and the precision he has is good. I like it. :bounce:

Re: BFG #7

Posted: Sun Aug 06, 2017 6:18 am
by jackssmirkingrevenge
I love it, especially that magazine feed that is simultaneously elegantly simple while unnecessarily complicated :D kudos!

Re: BFG #7

Posted: Sun Aug 06, 2017 6:26 am
by farcticox1
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
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Max swing left or right
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Re: BFG #7

Posted: Sun Nov 05, 2017 3:22 pm
by farcticox1
Got the BFG out and gave it a Xmas paint job, brown grips and black barrel now 8)
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Re: BFG #7

Posted: Wed Nov 15, 2017 4:16 am
by Air2theBrain
Wow! 8)

Such a clean professional build, i noticed there is no qev but a pilot valve?
What are they like compared to a qev?

Love the workmanship, great inspiration thank you. :)

Re: BFG #7

Posted: Wed Nov 15, 2017 5:35 am
by farcticox1
BFG uses a 3/8 air pilot valve about the same flow as a 1/4" QEV, it is a lot more bulky, I mainly used it because I already had it :o

This is my first QEV attempt, 3/8" chineasiem one of Ebay.
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Re: BFG #7

Posted: Sun Jan 28, 2018 2:38 pm
by farcticox1
Finished the removable magazine :D
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It hooks onto a pin at the front then pivots in and locks
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New charge handle and shut off for loading cylinder to make it single shot
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Now it's much slimmer with the magazine off
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And I can check to see if it is loaded or not :D
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Re: BFG #7

Posted: Sun Jan 28, 2018 6:51 pm
by Air2theBrain
Just awesome. :shock: 8)

Looks fantastic well done F1.

Re: BFG #7

Posted: Mon Feb 05, 2018 6:51 pm
by farcticox1
Sporting the new folding bipod 8)
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