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Butane through ball valve ?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Butane through ball valve ?

Unread postAuthor: covey12 » Fri Aug 31, 2012 1:38 am

I'm working on a new 1/2" barrel advanced combustion, my first advanced so i figured i'd start small so i don't blow my hand off. Anyway, i am trying to find a way to get the butane in the gun, i understand the concept of the butane syringe, i just dont want to have to unscrew a port screw to inject it everytime, i was thinking of a 1/4" ballvalve threaded into the chamber one side, on the female threads of the valve on the other sides would be epoxied in completley, with a hole drilled in it that can fit the butane syringe in with a tight fit, so i can open the valve, shoot it up with butane, close, fire, ill try and get a sketch up soon, any thoughts?
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Unread postAuthor: jackssmirkingrevenge » Fri Aug 31, 2012 3:20 am

Should work a treat, go for it :)
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Unread postAuthor: covey12 » Sat Sep 01, 2012 2:14 am

my chamber is 15" of 2"pvc for the 1/2" barrel, is this sufficient for getting high velocity shots out of the sch40 1/2" with a rubber slug? I am looking to be able to shoot through atleast 1/4" of plywood but i may be over-anticipating this build lol. Also would i be in need of a chamberfan for this build/ is 2" to skinny for a chamber?
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Unread postAuthor: jackssmirkingrevenge » Sat Sep 01, 2012 2:59 am

Should work, how long is your barrel?
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Unread postAuthor: covey12 » Sat Sep 01, 2012 9:14 pm

barrel is only 2 ft long, i was going for compact i can make larger if need be though, i am installing the chamber fan in the back of the chamber, should the butane be injected behind or infront of the fan, also should the fan blow towards the barrel or back of the chamber? thanks for the help
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 02, 2012 2:31 am

Doesn't matter where you inject it, the fan makes a homogenous mix regardless.
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