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Automatic Airsoft gun Design - First post :D

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Unread postAuthor: Gun Freak » Sat Jun 19, 2010 9:06 pm

That post doesn't really explain how it is adjustable...
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Unread postAuthor: jackssmirkingrevenge » Sat Jun 19, 2010 9:06 pm

by having flexible tubing within a compression fitting like POLAND_SPUD did you can tighten or loosen the fitting to give a higher or lower "pop-off" pressure.
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Unread postAuthor: killerbanjo » Sun Jun 20, 2010 4:44 am

jackssmirkingrevenge wrote:Agreed there, doesn't have to be fancy :)




Looks good but i don't want a hight ROF with minimal air loss, which is why i think the piston route is the best way to go... Vortex blocks and clouds seem to suck the air, like a hooker suc... no, i won't go there!
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Unread postAuthor: POLAND_SPUD » Sun Jun 20, 2010 5:25 am

Vortex blocks and clouds seem to suck the air, like a hooker suc... no, i won't go there
I can tell you've never been there :wink: in the first case the flow is pretty high while in the other it amounts to just a couple of ml over a long period of time :D

but you are right to some extant - typical vortexes and clouds use a lot of air, but if you use a detent you can save a lot of air
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Unread postAuthor: inonickname » Sun Jun 20, 2010 6:23 am

POLAND_SPUD wrote:
Vortex blocks and clouds seem to suck the air, like a hooker suc... no, i won't go there
I can tell you've never been there :wink:


Well, you can hardly expect an enthusiastic performance for the going rate of human bodies nowadays :P
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 20, 2010 7:31 am

killerbanjo wrote:Vortex blocks and clouds seem to suck the air, like a hooker suc...


...succinctly embodies a metaphor for the futility of the human condition, yes I see your point ;)

As POLAND_SPUD said above, I agree that standard "bullet hose" vortex/cloud designs are very wasteful of air and ammunition, however by incorporating a detent that will seal each BB in the breech until sufficient pressure builds up to "pop" it out, you are not only dropping the rate of fire to a much more reasonable rate, but also increasing the power for each shot.

Jim has some thoughts on the subject here, and I have my own ideas, worth a read through.

I've done a lot of work with reciprocating mechanisms (and to answer your query,no, didn't make this work) but at the end of the day, there are simpler and much more efficient solutions.
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Unread postAuthor: killerbanjo » Sun Jun 20, 2010 7:12 pm

Well guys, after LOTS of searching i found this site.

His MK1 design looks almost identical to the one i came up with and on his MK2 he said it was to fix the timing issues that he had with the mk1. After looking at all 4 i think the mk2 is very complex,but looks the best.

Off to bed, night guys.
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 20, 2010 10:14 pm

killerbanjo wrote:Well guys, after LOTS of searching i found this site.


Could have found it here ;)

Still overly complex in my opinion but whatever floats your boat :)

If you want a reciprocating design that works, a pop-off style valve is relatively simple to make and ideal for this sort of thing.

Image

If you want to incorporate a loading bolt, there are several ways in which the design can be adapted, look through here.

Image

Image

Personally, I find a simple "tee" magazine without a bolt works great for spherical projectiles:

Image
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Unread postAuthor: killerbanjo » Mon Jun 21, 2010 5:30 am

Really good post, thanks!
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