BFG #7

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
hectmarr
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Mon Feb 05, 2018 7:46 pm

Hello farcti! This spectacular this! Very good aesthetics and as always, a neat construction. I like it! :D
With what pressure does this weapon fire? :?:
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farcticox1
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Mon Feb 05, 2018 8:12 pm

Only 140psi, it's just standard pneumatic parts and PVC chamber, that is enough, it will go through 1/2" plywood.
hectmarr
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Tue Feb 06, 2018 6:13 am

Surely, I mean, that's enough. Actually to do serious damage to other harder materials, the most effective, simple and elegant and least expensive, is to use the other type of weapon, of those that should not be discussed here for obvious reasons. Very nice that you made. Regards! :)
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Mon Feb 26, 2018 6:12 am

Nice build and great WIP pics.
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farcticox1
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Mon Feb 26, 2018 6:27 pm

I will be making another video as well when the weather warms up and I can get back out in the workshop again.
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mako
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Tue Apr 10, 2018 4:02 pm

Dude, that magazine system is so cool it's ridiculous.

The whole thing is awesome, obviously, but that mag... Rube Goldberg meets Machinery and it works!!!!
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farcticox1
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Wed Apr 11, 2018 4:15 pm

It started simple in my head, then got a bit more complicated, but it does work nicely.
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farcticox1
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Sun Apr 29, 2018 12:50 pm

New video of updates to BFG :D

[youtube][/youtube]
hectmarr
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Sun May 06, 2018 11:23 am

Very nice weapon! I loved it. regards :)
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farcticox1
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Sun Jun 24, 2018 11:00 am

Tested my chrono device, it shows a consistent 416fps at 140psi. 10mm steel BB is about 4.5gms/69.4gr.
Muzzle energy = 27ft.lbf/36joules. :shock:
I'm changing the PVC chamber/stock for a stainless one, it has less volume but I will feel safer taking it up to higher pressures. Going to do the same chrono test when I get it assembled again.
chrono (1).jpg
chrono (2).jpg
New stainless chamber. I like the adjustable stock better.
chrono (3).jpg
chrono (4).jpg
The results are in, new chamber at 140psi = 357fps, 160psi = 385fps :P
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Sun Nov 25, 2018 11:30 pm

I know this is an old thread but... Nice! It looks a bit like a vector...
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farcticox1
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Mon Nov 26, 2018 5:26 am

Well spotted, that's the profile I used :D
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