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| sandman |
 Posted: 06/17/2008 13:18 PM Post subject: |
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Colonel
Joined: 15 Mar 2007
Posts: 648
885.73 Spud Bux
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| actually if you are going to use a pump i would put a ball valve behind the sprinkler, so that u ca get enough pressure in the chamber to seat the valve, otherwise the sprinkler will never close, unless you have a small chamber |
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| neeewwww |
| Posted: 06/17/2008 13:24 PM Post subject: |
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Private First Class
Joined: 13 May 2008
Posts: 29
103.25 Spud Bux
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So... Barrel -> Sprinkler -> ball valve -> chamber -> schrader valve
Close Ball valve, fill the chamber, open ball valve... Fire.
Oh... thanks a lot...
Back to the designs... An materials list. |
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| sandman |
| Posted: 06/17/2008 13:28 PM Post subject: |
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Colonel
Joined: 15 Mar 2007
Posts: 648
885.73 Spud Bux
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| i think this would give you the best results, but this is just how i would address that problem, others may have better ways |
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| MalcomFrost |
| Posted: 06/18/2008 21:26 PM Post subject: |
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Private
Joined: 18 Jun 2008
Posts: 14
50.59 Spud Bux
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Just built my first pneumatic cannon, but my sprinkler valve honks. Actually it's really loud, like an air horn. I'm using a RainBird valve with 3/4" fittings, I kept the solenoid on which I activate using a couple of 9V batteries and a momentary switch/button. I've heard you can mod those valves to fix this problem, but I'd rather not use a blower, since I've put some effort into the electric trigger system. Any ideas?
-EDIT-
Nevermind, looks like I'll just have to mod the valve. Doesn't seem to be any way around it. |
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