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Inner workings for Oxbreath.

A place to ask general spud cannon related questions.
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Inner workings for Oxbreath.

Unread postAuthor: Mitchza89 » Tue Nov 23, 2010 7:32 am

Here mate,

I hope this helps. This is the inner working of the parts of this valve.

Cheers!
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Unread postAuthor: POLAND_SPUD » Tue Nov 23, 2010 8:04 am

Sorry for asking but how it works ?? Is it a 3way valve??
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 23, 2010 8:29 am

POLAND_SPUD wrote:how it works ??


Were you the guy giving English lectures a couple of days ago :D

From what I can tell it's simply a high flow poppet valve.
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Unread postAuthor: POLAND_SPUD » Tue Nov 23, 2010 8:55 am

Were you the guy giving English lectures a couple of days ago
well yeah but it isn't a proper question, right ? sort of like in -> Could you tell me where the nearest post office is ?

From what I can tell it's simply a high flow poppet valve.
Pretty cool but there are DIY 3 way valves too
http://www.spudfiles.com/forums/diy-3-2 ... 21061.html
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Re: Inner workings for Oxbreath.

Unread postAuthor: Selador » Tue Nov 23, 2010 11:01 am

Mitchza89 wrote:Here mate,

I hope this helps. This is the inner working of the parts of this valve.

Cheers!


Thank you VERY much !

It is exactly as I thought. But like I said in the P.M., it is good to see the inner workings in a cutaway view.

Also putting up the disassembled valve, was even better.

A one-two punch to making the valve understandable to a kindergarten audience, like me.

:D

Thank you.

I am hoping that between this and a homemade piston valve, I'll be able to build a couple small spudguns for friends, without having to buy sprinkler valves and blowguns.

~~~

POLAND_SPUD wrote:well yeah but it isn't a proper question, right ? sort of like in -> Could you tell me where the nearest post office is ?


Hi P.S.

You are correct. Except that you left out the first part of the proper question.

Instead of just "How it works ?" It would be either "How does it work ?" Or... "Can you tell me how it works ?"

Of course... "How it works ?" Gets the question over, just fine, as far as I am concerned. At least it's simple to understand. Not liike a bunch of leet talk, and slang that is impossible to decipher. LOL

~~~


Back to Mitch,

It looks to me like the way your example gun works, is that you connect the air to the bottom of your poppet valve, add the air to the gun that way.

Then you have to pull the bolt in your poppet, back.

Then disconnect the air supply.

Then push the poppet bolt to dump the pilot volume.

Is that correct ?

ON EDIT: Ah. Never mind. Just read the text in the first pic. You use a spring to push the bolt closed. That would close the poppet as soon as you disconnected the air from the bottom.

Thanks again.

:D
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Unread postAuthor: Gun Freak » Tue Nov 23, 2010 5:14 pm

Lol... sorry... but this doesn't make sense to me. It looks like, if there is a constant air supply, and the trigger is pushed, the air has no where to go? Do you disconnect the air after you fill it? Because you mentioned semi auto...
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Unread postAuthor: inonickname » Tue Nov 23, 2010 7:29 pm

There isn't a constant air supply. It's just a valve to provide opening with a poppet, along with a check valve for the fill built in, and with a low pilot volume.
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Unread postAuthor: Gun Freak » Tue Nov 23, 2010 7:53 pm

Mitchza89 wrote:With a constant air supply from the bottom and a spring in front to keep it and the QEV closed, it was the perfect semi auto spudgun

It's from the diagram.
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Unread postAuthor: inonickname » Tue Nov 23, 2010 7:59 pm

Gun Freak wrote:
Mitchza89 wrote:With a constant air supply from the bottom and a spring in front to keep it and the QEV closed, it was the perfect semi auto spudgun

It's from the diagram.


Ah sorry, the picture didn't load when i went to look at it the first time. In that case I'm in the same boat. Not sure.
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Unread postAuthor: Technician1002 » Tue Nov 23, 2010 8:41 pm

Using o rings on that style of valve often includes the problem of the o ring blowing off at high pressure. I'm not sure how it can be modified to prevent that other than using two T fittings and making the valve core fully contained inside a pipe and have it uncover a port in the second T so the o ring remains inside a pipe at all times to retain the o ring.

Here is a larger view of a port in the side of a pipe designed to keep an o ring from blowing off. This is a much larger valve.
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Unread postAuthor: Mitchza89 » Tue Nov 23, 2010 8:43 pm

As soon as you pressurize the gun, The pressure in front of the valve keeps it closed at all times automatically. It stays open but as soon as you disconnect the air supply, the pressure differential slams it closed. While the pressure is the same around the poppet valve and inside the gun is the same....you can close it just by effortlessly sliding it.

That's all there is to it mate :) I think I may have to bring this old gun back to life. I evolved from this hobby into homebrew. It started off just making beer from the tins that you get to your super market to a temperature controlled fridge, 4 kegs, a 10kg co2 setup and all the proper cooking equipment to make all-grain beer......beer the proper way and the way it's been done for thousands of years. Nothing more satisfying to have raw grain and make a crystal clear lager with a light creamy head and an amazing taste....for 30 bucks for 3 cartons :D:D
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Unread postAuthor: Gun Freak » Tue Nov 23, 2010 9:36 pm

That still doesn't explain how you can get semi auto :roll:
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Unread postAuthor: Mitchza89 » Tue Nov 23, 2010 11:13 pm

I had my air compressor hooked directly to the chamber. With constant pressure, the valve always stays closed. It's as simple as that :)
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