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Asco valve

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Asco valve

Unread postAuthor: sjog » Sat Feb 02, 2008 8:38 pm

[url=http://s116.photobucket.com/albums/o12/sjogun/?action=view&current=[url=http://s116.photobucket.com/albums/o12/sjogun/?action=view&current=IMG_0581.jpg]Image[/url].jpg[/img][/url]Image

Put this together this afternoon.
I was surprised at the power and noise. Shot GB's at 80lbs.
Wanted to put bolt action barrel from L7gbl , will take a little more work.
Cannibalized parts from 3 launchers.
Pipe and fittings cost $170. Working w/steel pipe is great no waiting for glue to dry ,changes are easy. Cap was drilled and taped for fill and gauge.
Rate of fire would be very fast w/bolt action or hopper because valve is chamber fill. I tried dry firing every time the gauge hit 20lb ,worked flawless.
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Last edited by sjog on Sun Feb 03, 2008 6:52 pm, edited 1 time in total.

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Unread postAuthor: potatoflinger » Sat Feb 02, 2008 9:34 pm

Wow, that is one awesome looking cannon! I love how the chamber is also a stand :lol:
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It's hard to soar with eagles when you're working with turkeys.
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Unread postAuthor: Novacastrian » Sat Feb 02, 2008 9:37 pm

I like that for so many reasons- well done on a very innovative cannon :D
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Unread postAuthor: iknowmy3tables » Sat Feb 02, 2008 9:47 pm

you don't have to fill the asco valve from the pilot, I thought you had to since there is no spring on the diaphram
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Unread postAuthor: hi » Sat Feb 02, 2008 9:49 pm

its certainly an interesting design. i like it.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: daberno123 » Sat Feb 02, 2008 9:58 pm

you don't have to fill the asco valve from the pilot, I thought you had to since there is no spring on the diaphram


On the diaphram there is a washer that adds weight to the diaphram, taking the place of the spring.

I really like the design, especially the stand as the chamber.


What are you filling it with that would allow it to be so fast if used semi-auto? I'm guessing some sort of CO2 tank?
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Unread postAuthor: sjog » Sat Feb 02, 2008 10:13 pm

The diaphragm is rather snug or taunt against the seat.

I will get the chronograph out.The weather has been mild in the NE.
Oh ya I can shoot in the cold now :wink:

With that stand I just tilt it back for elevation.

daberno123 With a compressor it fills fast. As fast you could load with bolt action it would have filled to 40-60lbs.


I shot over the chronograph today.
Put a little paint on, cold galvanized spray. Looks better.
Had my 'little brother' pop off a few rounds.<a title="IMG_0596.jpg" href="http://s116.photobucket.com/albums/o12/sjogun/?action=view&current=IMG_0596.jpg"><img src="http://i116.photobucket.com/albums/o12/sjogun/th_IMG_0596.jpg" border="0"></a><a title="IMG_0600.jpg" href="http://s116.photobucket.com/albums/o12/sjogun/?action=view&current=IMG_0600.jpg"><img src="http://i116.photobucket.com/albums/o12/sjogun/th_IMG_0600.jpg" border="0"></a>
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