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Super-Simple-Sprinkler-Valve-Semi

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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Would you like to see a how to on "the people's semi"

yes
7
58%
no
2
17%
its so simple a caveman could do it why need a how to
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Total votes : 12
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Super-Simple-Sprinkler-Valve-Semi

Unread postAuthor: Lockednloaded » Tue Mar 16, 2010 9:05 pm

...................................................SSSVS................................................
I'v had h=this sprinkler valve gun for about a month, and decided it needed improvement. So i went to the hardware store today and bought a 125 psi pop off valve. After getting it i decided feeding we be too great an issue, so i decided to try this one instead of going back to the store. I call it Semi-auto, but it really only gets three shots per fill, but it still counts...

Now for some specs:
The stock is a 1" body with 3/4" pipe added for a cooler look.
the valve is an orbit 1" SV piloted by a 1/4" 125psi pop-off valve
The barrel is 3/4" sch 40, but i have an 1" one and a 1/2" one.

Note: There are two fill valves of this gun, one on the SV and one on the stock. When filled from the stock, this gun can be taken to 150 psi, weird right?

Now for some pictures:
Image

Image

Image
A frame from a video where i shot an orange w/ a grape
Image

There will be more to come, i will post damage pics later
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Last edited by Lockednloaded on Wed Mar 17, 2010 11:54 am, edited 1 time in total.
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Unread postAuthor: jackssmirkingrevenge » Wed Mar 17, 2010 12:44 am

Nice, consider a magazine and a larger chamber, you could be the first to develop a semi for the people ;)
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Unread postAuthor: Lockednloaded » Wed Mar 17, 2010 9:42 am

Yea, i have a large 80 oz chamber, but this one is a little more ergonomic, and it takes WAY less pumping. For the magazine, i need to find a consistent ammo, i tried your co2 cartridge, but they do a little too much damage
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Unread postAuthor: metalmeltr » Wed Mar 17, 2010 10:52 am

That is pretty cool for such a simple gun. Nice work! What was the reasoning for the use of a popoff valve as your pilot? How well does it wok wih the low flow pilot valve?
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Unread postAuthor: Lockednloaded » Wed Mar 17, 2010 11:05 am

well my reasoning was at first that i didn't have a blowgun :oops: and i needed a pilot. I just happend to have a pop-off. The popoff seems to me to have way more flow than even my modded blowgun, but there are no real figures to back this up, just a matter of opinion.
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Unread postAuthor: mikemurph » Wed Mar 17, 2010 9:10 pm

Are there any special modifications to the SV beside the added pop-off/fill station? how hard is it to pull the pop-off? and with a compressor, could this go full auto?
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Unread postAuthor: Lockednloaded » Wed Mar 17, 2010 9:16 pm

Are there any special modifications to the SV beside the added pop-off/fill station? how hard is it to pull the pop-off? and with a compressor, could this go full auto?

Yes, the spring was removed, an equalization hole was made, and the solenoid port was filled
The pop-off is easier to pull at higher pressures, and it doesn't really matter, i only pull it a tiny bit.
i don't really know, it would probably stress the valve too much anyway
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Unread postAuthor: jackssmirkingrevenge » Thu Mar 18, 2010 12:27 am

Lockednloaded wrote:The popoff seems to me to have way more flow than even my modded blowgun, but there are no real figures to back this up, just a matter of opinion.


No doubt about that.

I tried your co2 cartridge, but they do a little too much damage


Too much damage? That's a new one for spudfiles :roll: marbles perhaps? Or scale it down to airsoft, the barrel choking the flow will make the chamber last longer...
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Unread postAuthor: Gun Freak » Thu Mar 18, 2010 7:21 am

Why do you want less damage? :?
That's a little wierd.
Anyway, what's the point of taking the spring out? And don't all sprinkler valves have an equilization hole already?
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Unread postAuthor: Lockednloaded » Thu Mar 18, 2010 11:11 am

by too much damage, it is only too much for my little back yard, when i go out to a friends ranch, i'll be sure to take some destruction ammo. And with just a grape it takes the bark off trees!

Anyway, what's the point of taking the spring out? And don't all sprinkler valves have an equilization hole already?

Well the spring reduces flow greatly. And my equalization hole was plugged with some weird plastic peice.
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