auto combustion. wil this work?

[jean]

hi tell me what you think please. will this work?

i edit an new version

[wyz2285]

Lol I didn't understand your diagram, but even through that it won't work, first the "butane in "port won't allow any butane in,probably you draw the one way valve in the wrong direction. The rest of o-rings I don't understand any of them, I don't see how the reload mechanism work either.

[jean]

thanks wyz2285

well the checkvalve is actually a hammer valve.
the greenpart is the moving part.
the orings are glued to the green part.

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[wyz2285]

This is what I have understand so far:

[jean]

ok i am try to describe (ah i missed one green disk in my diagram i edit that)

before you do the first shoot you have to cock the green part (to the left side)
ok
step 1
-the green disk number 1 (right to left) displace the air in the chamber through the gap between the barrel (also green) and the second grey disk
the holes in the first grey disk allow air come in and out so the green part doesn't suck adhere)
-load new ammo
-the thin piston reach the valve and let the butane behind the second small o-ring and stay because the hole (you ask) at atmospheric pressure
-the first small o-ring is to doesn't allow butane reach the chamber
-the big (left) spring is compressed

step 2
-the compressed spring push the green part back
-the chamber fills up with fresh air through the gap
-the small piston push metered butane in the chamber
(now i also added a little thing to the diagram)

step 3
-fire the spark
-the bb/ammo goes forward and left the small holes in the barrle
-the combustion gasses reaches the second and third chamber alias cylinder and pushes the complete green part against the sping and the cycle can begin new


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[wyz2285]

LOL good luck with it
You need a lath and mill at least to make all these parts, probably you will need a CNC.
Why not just use air? I know some combustion paintball guns, but airsoft? with a small chamber, high pressure air it´s better than combustion, unless you make it hybrid (witch it´s even more work).

[jean]

ok maybe scale it up to 4 inch dia

but will the principle work?
coll down ,leaks . open breach wile filling the cylinders other things....

btw it will build out of some sort of plastic and i have acess to a wood lathe

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[pneumaticcannons]

a wood lathe won't cut it. You need a metal lathe for precision machining.
About the design... it seems way too complicated. No offense intended. As wyz said(and as gun freak is going to say ) go pneumatic!

[Gun Freak]

Full auto combustions are ridiculous. Do you have any idea how easy a full auto pneumatic is?

[pneumaticcannons]

Full auto combustions are ridiculous. Do you have any idea how easy a full auto pneumatic is?

told you so

[jean]

ok this isnt building for any airsoft game also it is only just for fun.
funktion before power.
please help me to figure it out

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[Gun Freak]

funktion before power.

Ok........

Pneumatic for funktion and power.

[jean]

ok i be willing to build it combustion.
i had build serval pneumatic cannons and combustions.
have a basement workshop (drillpress cutting saw grinders and serval other things) and will try it out.
i won't go pneumatic.

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[Goats spudz]

how about pre-loaded combustion or hybrid cartridges and then belt feed them, but still go pneumatic

[wyz2285]

If you really want it combustion that badly, there is a combustion mini gun in the combustion showcase, you might want to check it out, it's full auto.