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Semi and full auto valve idea

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Semi and full auto valve idea

Unread postAuthor: finland66 » Thu Oct 17, 2013 2:34 pm

Hello

I was discovering PolarStar Fusion Generator and I got idea of semi and full auto valve MAYBY based to PolarStar but I'm not sure, becose I can found diagraphs for PolarStar.
So theres my idea
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Re: Semi and full auto valve idea

Unread postAuthor: jackssmirkingrevenge » Fri Oct 18, 2013 7:36 am

How does it work exactly? Does the solenoid push the bolt back and forth by alternating flows?

airsoft-pellet-guns/topic22742.html

airsoft-pellet-guns/topic22660.html
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Re: Semi and full auto valve idea

Unread postAuthor: finland66 » Fri Oct 18, 2013 11:55 am

Thanks about those threads :)
Picture says more than thousand words.
From picture 3 cycle comes back to picture 2
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Mechanism at unpressurised position
image.jpg
Mechanism pressurised and ready to fire
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mechanism when air is released on solenoid valve
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Re: Semi and full auto valve idea

Unread postAuthor: 1nxtmonster » Fri Oct 18, 2013 12:12 pm

So you are using a solenoid valve to "pilot" a shutoff valve? Good idea, hope it will work
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Re: Semi and full auto valve idea

Unread postAuthor: finland66 » Fri Oct 18, 2013 12:59 pm

Actually yes.
Now I need to start machining this thingy :wink:
Did you get it jsr :?:
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Re: Semi and full auto valve idea

Unread postAuthor: Gun Freak » Sun Oct 20, 2013 9:48 pm

The problem I see is this: if the air goes in too fast it might slam that piston up against the front pretty hard and over time could deform the front. Maybe add an o-ring or rubber washer as a damper.

I see no reason why this valve shouldn't work. Are you going to extend the point of the piston to act as a BB injector? That would prevent double feeding.
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Re: Semi and full auto valve idea

Unread postAuthor: finland66 » Mon Oct 21, 2013 8:13 am

Gun Freak wrote:The problem I see is this: if the air goes in too fast it might slam that piston up against the front pretty hard and over time could deform the front. Maybe add an o-ring or rubber washer as a damper.

I agree

Gun Freak wrote:Are you going to extend the point of the piston to act as a BB injector? That would prevent double feeding.

Yes. Theres maby bb feeding problem at high ROF.

Do someone have some great ideas for magazine expect thishttp://kuba-t1000.com/minigun/index.php?akcja=tutorials_airsoft_ammo_box
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Re: Semi and full auto valve idea

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Re: Semi and full auto valve idea

Unread postAuthor: jackssmirkingrevenge » Mon Oct 21, 2013 8:54 am

Interesting... though personally, if I'm using a solenoid valve anyway, I would go for something simpler. Do you intend this for low power low pressure airsoft or something a bit more hardcore?
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Re: Semi and full auto valve idea

Unread postAuthor: finland66 » Mon Oct 21, 2013 9:21 am

I planned this airsoft in my mind but I can go higher.
Mayby 800psi and 6mm steel bbs if I can found solenoid valve for that pressure.
Do anyone know where I can get 6mm steel bbs for cheap?
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Re: Semi and full auto valve idea

Unread postAuthor: jackssmirkingrevenge » Mon Oct 21, 2013 9:30 am

If you're worried about the cost of BBs, I'm guessing you haven't checked the prices for a solenoid valve that can take 800 psi...
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Re: Semi and full auto valve idea

Unread postAuthor: finland66 » Mon Oct 21, 2013 9:37 am

Yes I know that those solenoids are really expensive.
Can you recomend some other ammo?
BTW: I could use 4.5 bbs but barrel is difficult to find/make.
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