SpudFiles

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?

Should work a treat, go for it

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?

Should work, how long is your barrel?

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

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