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Remote-Fired Air Gun

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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Remote-Fired Air Gun

Unread postAuthor: Lockednloaded » Mon Jun 10, 2013 1:36 pm

I ordered one of those cheap 12v remote circuits off of amazon a while ago (~12$ shipped IIRC) and just got around to trying it out.

These things are extremely simple to setup, and I will definitely buy another one for another more serious project in the near future

The cannon itself is pretty simple:
1-1/2" by about 8" chamber
1-1/2" by about 14" barrel
3/4" sprinkler valve
160 psi operating pressure
Image

Right now I've got my valve running at 12v because that's what the RC unit is rated to, is this hurting performance much?
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Unread postAuthor: jrrdw » Mon Jun 10, 2013 2:36 pm

Is it a 18 or 24 volt sprinkler valve? I can see it being a bit weak if it's a 18V, but at 24V I think it is deffenetly going to suffer preformance. As far as physical damage it's a electro magnet, I don't think they over heat from low voltage like motors do.
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 10, 2013 3:20 pm

Very nice!

Given the size of the sprinkler valve's pilot opening, I don't think voltage has a significant impact on performance when you're operating it as a solenoid valve.
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Unread postAuthor: dart guy » Mon Jun 10, 2013 3:25 pm

i think that you should take a 3 intersection pipe and add a feeder tube and have it shoot multiple shots :)
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Unread postAuthor: wyz2285 » Mon Jun 10, 2013 3:57 pm

I used the same type of remote for my hybrid ignition, however my command looks cooler than yours :lol:
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Unread postAuthor: Technician1002 » Mon Jun 10, 2013 6:31 pm

The magnetic field in the coil is directly related to current. Since current on 12V DC is higher than on 24VAC, it is not slower.

I found an old thread on the AC vs DC on sprinkler valves somewhere where the current was measured.
http://www.spudfiles.com/forums/questions-electric-sprinkler-valve-t18083.html
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