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by squib
Mon May 18, 2020 5:12 pm
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Hello, how's this?

Hello, I've been swinging by here for a fair number of years to see what's shakin' from time to time and working on some bbmg ideas that have been rattling in my gourd. I've recently signed on to present one of them here to see how it strikes you all. https://youtu.be/PtMkuVCu1pg I have more content...
by jackssmirkingrevenge
Tue May 08, 2007 10:17 pm
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excellent use of the blow-forward valve, I really should incorporate it in one of my designs some day. Lovely damage shots too, though is the power a little inconsistent? Some of the GBs just slam through, others appear to ricochet.
by jackssmirkingrevenge
Sat May 30, 2020 4:20 am
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Re: QEV blowback mod?

On a small scale it's not worth having a piloted exhaust valve, the hammer can open your main valve directly:

Image

by squib
Wed Jun 03, 2020 10:37 am
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The BBM rapid-fire BB gun

This one is just a fun experiment to answer a question that's been nagging me for over 30 years. Demonstration is at the end.



by jackssmirkingrevenge
Fri Jun 19, 2020 6:30 pm
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Re: Pull Trigger, loads, then releases chamber?

Here is one working:



Looks like it is basically the same concept as a NBB airsoft gun.

A double action trigger seals the chamber and then knocks open a valve poppet.
by jackssmirkingrevenge
Fri Jun 19, 2020 5:51 pm
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Re: Blow forward AEG nozzle... Why it didn't take on?

How does a Non blow back work? Is that like the trigger pulls nozzle loads bb Seats bb. And somehow blocks air input and releases chamber?. More or less, it depends on the model. On my Marui MK23 the trigger pushes a nozzle forward that strips a BB from the magazine and least it in the barrel, whil...
by jackssmirkingrevenge
Sun Jun 21, 2020 5:42 am
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Re: Air Stapler

Image

A good diagram of how it works
by Moonbogg
Tue Jun 30, 2020 6:17 pm
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Re: Confused. Cylinder chamber to barrel ratio for compressed air.

If you have the same air volume and the chamber is 1/3 the volume, the pressure will increase by 3x.

https://www.omnicalculator.com/physics/boyles-law
by farcticox1
Sat Jul 04, 2020 8:52 pm
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Re: Confused. Cylinder chamber to barrel ratio for compressed air.

Higher pressure will always give better performance, you can use smaller chamber to get the same volume, and probably smaller valve, just that everything has to be rated for that pressure, that's why I stick to 150psi, materials are easy to get hold of.