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Made QEV and Pilot But it dumps whole air tank !

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Made QEV and Pilot But it dumps whole air tank !

Unread postAuthor: archie370 » Thu Aug 16, 2012 5:20 am

Hey Guys like the title says ... Need help Making my airgun functional as a semi auto
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Unread postAuthor: Zeus » Thu Aug 16, 2012 5:34 am

Well obviously you didn't tell the pilot to work as a semi auto valve.

Image

He's obviously confused.


Seriously, give us some details, which pilot valve, chamber or pilot filling, homemade piston valve or commercial QEV?
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/sarcasm, /hyperbole
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Unread postAuthor: PotatoEnemy17 » Thu Aug 16, 2012 8:25 am

Is your air tank directly connected to the QEV? Here is a diagram of a QEV semi auto system.

@Zeus LOL :lol:
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SemiAuto.PNG
This is a common semi auto system for a QEV
SemiAuto.PNG (20.98 KiB) Viewed 1814 times

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Unread postAuthor: silentkill12345 » Thu Aug 16, 2012 11:23 am

put a spring behind the piston so that it closes by itself
@zues: LOL ;)
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Unread postAuthor: archie370 » Fri Aug 17, 2012 1:31 am

Alright ! ... The Pilot is where it dumps the air to open the QEV valve through a blow gun (Rated at 150psi) ... the pilot has a nut that can be undone and tightend to measure the bursts of air but at the moment the pilot comes out and blocks the blowgun which is good but my piston in the QEV is staying open and losing all the air from my cylinder ! .

Zeus ... im not a complete retard please be nice !
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Unread postAuthor: silentkill12345 » Fri Aug 17, 2012 1:57 am

yes so put a spring inside the QEV so it shuts down by itself!

Image

put a spring at the pilot side so it presses to the exaust port
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Unread postAuthor: Zeus » Fri Aug 17, 2012 2:18 am

You also need an equalization hole in the diaphragm.

And I am nice, you just gave the most vague question I've heard in quite some time.
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Unread postAuthor: archie370 » Fri Aug 17, 2012 2:26 am

Fair Enough :) !

Ok Bud I sort of get your diagram ill upload what im trying to say with paint :)
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Unread postAuthor: silentkill12345 » Fri Aug 17, 2012 2:27 am

thnx for improving me zeus :) just a small hole indeed (sorry)
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Unread postAuthor: archie370 » Fri Aug 17, 2012 2:47 am

Alright Budd
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Unread postAuthor: archie370 » Sat Aug 18, 2012 2:02 am

Bump Bump Bump
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Unread postAuthor: dahakka » Sat Aug 18, 2012 3:26 am

is that a homemade piston valve?
i try to get multishot with my homemade piston valve like that before
it's suck
because the vlave's sensitive depend on your piston quality , want semi auto the piston must perfectly fit, moving easily, and good sealing face, of course
so , buy a qev , a blowgun , push it sightly..... something like BTB say in some thread , i don't remember
or make a hammer valve
it's easy to make too :lol:
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Unread postAuthor: archie370 » Sat Aug 18, 2012 7:36 am

Finally someone that helped thanks buddy :) ... ill try a tighter piston and a stronger spring if not ill buy a QEV :)
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