hello spud files. its been awhile since ive done a piston valve so im glad to be done with poopy ball valves
Specs;
Barrel: 1/2 inch pvc
Chamber: 1 1/4 inch pvc around barrel
Exhaust valve: 1/2 inch ball valve
filling: air compressor thing. usually at 160 psi from an ex-propane tank that can be stored in a back pack for mobility
Piston: a 3/4 inch end cap. the sealing face is a rubber O-ring(type 14 i believe) that is epoxied onto the barrel. so the sealing face is not attached to the piston so i dont need large sheets of rubber to cutout and place on pistons.
main ammo: AA batteries.
tell me what you think thanks
[youtube][/youtube]
coaxial piston valve
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urgle the danish cow
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- cheap calculator after
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- cheap calculator before
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- one handing it, it is fairly light
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- the exhaust valve
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- hinunter das Fass
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- das Gewehr
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Technician1002
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Nice job. Did you get the idea of a valve seat from my Mouse Musket? That is built almost exactly like mine but smaller. The Musket was a 2 inch chamber with a 1 inch barrel.
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jackssmirkingrevenge
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I would have gone with 5318008 but nice job 
hectmarr wrote:You have to make many weapons, because this field is long and short life
Looks as if you glued in the back bushing. I would have used a female adapter in place of the coupling and a threaded bushing to make it serviceable. But I mean if your piston is only a cap then i guess the only servicing it would need would be to put in an actual new cap... Other than that nice job.
more_eggs wrote:My teachers hated this one:
Teacher: "Matt, take your iPod out in class"
Me: "beg your pardon sir? I can't hear you, I'm listening to my iPod"
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urgle the danish cow
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no i did not. i was unaware that you did that with the mouse musket.Technician1002 wrote:Nice job. Did you get the idea of a valve seat from my Mouse Musket? That is built almost exactly like mine but smaller. The Musket was a 2 inch chamber with a 1 inch barrel.
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urgle the danish cow
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yea i did realize the consequence of that after i glued it. but its only pvc which is cheap.Vincenzo wrote:Looks as if you glued in the back bushing. I would have used a female adapter in place of the coupling and a threaded bushing to make it serviceable. But I mean if your piston is only a cap then i guess the only servicing it would need would be to put in an actual new cap... Other than that nice job.
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urgle the danish cow
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haha im old so i should act that wayjackssmirkingrevenge wrote:I would have gone with 5318008 but nice job
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pneumaticcannons
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I built a coax a few months ago. I was I my us house when I built it but then we went back to our current location. Only now did I clalculate that the c/b ratio was like 7 to 1. Lol gotta fix that when we go back for winter in 3 days.
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urgle the danish cow
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its very simple. i just epoxied an o-ring to the rear end of the barrel so all the piston does is apply pressure instead of apply a seal and pressure. i find it simpler and easierlol wrote:nice cannon! I like how you put the sealing face on the barrel I have not seen that before