Introduction: Homemade 400 Psi Airgun
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About: 17 Years old, doing a Masters in Professional Engineering (chemistry/mechanical) starting at UWA next year. I like designing and building things, as well as competitive archery
15.5 mm Bore, 1:30 helical cut rifling, aluminum, brass and stainless construction.. Calculated at mach 1.2 with hydrogen at 400 psi. Main ammunition are marbles..
Barrel: 15.5mm x 1.2m, 1:30 rifling (ammo; wadded marbles)
Chamber: 15.5mm x 80cm
Operating pressure: 120-400 psi
Blowgun porting, male QD for filling, with a built in internal check valve
Semi-bullpup configuration
I made a hand pump for it, which will easily reach 400+ psi, but takes far too long to bring the gun to pressure. So I'm going to buy a 260 psi track pump and use that..
Any questions? By the way I'm going to make a nice handle for it..
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19 Comments
Question 4 years ago on Introduction
Can you please share hoe you built 400 psi hand pump?
7 years ago on Introduction
holy crap
8 years ago on Introduction
Nice! I am building one with a QEV valve too. My tank is a bit bigger because it is 1 1/2 inch steel pipe.
9 years ago on Introduction
Using such high pressure with a QEV will break it.
9 years ago
Aaaaaaaawwwwwwweeeeesssssssoooooooommmmmmeeeeeeeeeee!!!!
10 years ago on Introduction
how did you get 400 psi with a hand pump?
12 years ago on Introduction
can i use galvanised steel?
12 years ago on Introduction
um don't you think that is a little dangerous!
12 years ago on Introduction
um don't you think that is a little dangerous!
12 years ago on Introduction
hand pump????? more info PLEASE and how did you rifle your pipe
13 years ago on Introduction
oh, and dogzinhood, the trigger is a blowgun, you can find it at your local lowes of harbor freight (local hardware store)
13 years ago on Introduction
what is the valve, ive made everything but the valve, and i need to find out what the valve thinfd is, and i even have a rifled barrel, please help!!!
13 years ago on Introduction
what kind of valve is the main valve?
13 years ago on Introduction
this is amazingly awesome. make an ible. does the rifling actualy improve accuracy?? i want to make a metal air gun, but its hard to get an affordable instant relese valve that can handle the pressure and has a opening size of ore than a 1/2 inch. any ideas?
13 years ago on Introduction
where did u get the trigger and what is the name of it?
13 years ago on Introduction
that is one of the cleanest cannons ever! Got videos/instructions?
13 years ago on Introduction
I'd like to try putting this together, any schematics for this available yet?? where can i get the exact materials?
13 years ago on Introduction
you should make in instructable or guide on how you make it, thats really cool
13 years ago on Introduction
how do u make it