Instructables

Cascade Failure Triggered Double Burst Disk Pneumatic Airgun

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Phew! That's a mouthful of a name.
It's been far too long since I've posted an Instructable. But rather than list a bunch of excuses, let's get started on today's project.
My latest airgun build follows a design called a cascade failure double burst disk system.  This is the most powerful and efficient gun I've built yet, and is relatively cheap: the whole thing cost less than 40 USD for me.

If you want to make something more efficient, powerful, and unique than the generic ball-valve, diaphram, or piston gun, try looking into burst disk pneumatics and designs such as this one.

PLEASE do not try this if it is your first cannon/airgun build. I will not be held responsible for injuries involved around building, testing, or shooting this design.  Failure to do research can lead to exploding pieces and severe injury.  This Instructable has been written by an experienced builder for others seeking new designs and challenges, not novices.

Special thanks to Spudfiles for having so much knowledge available. I built this gun after reading on that site for about four days!
Thanks also to jackssmirkingrevenge on Spudfiles for answering my questions about designs and linking me to more info.

Side note: I'm not sure what category this should go into. Anyone have some suggestions?
 
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thinkpadt301 month ago

Instead of the tubing and the top pvc pieces getting in the way of your viewing the target, try this. Instead of using the trigger chamber 4-way junction, use 2 3-way junctions and a short piece of pipe to connect them. Turn the rear 3-way, with the tubing, to one side, and the pressure chamber 4-way junction horizontally. This would also add stability. Turn the hose attachment to either the same side as the trigger hose outlet, or to the opposite side, with the hose going underneath. That would give you a smooth top, and you could even mount a scope, too.

Drako155 made it!2 months ago

Great job. I saw this and wanted to make my own. I made an instructable for my version. Made some changes to your design. Thought you might like to check it out.

http://www.instructables.com/id/Dual-Burst-Disk-Ca...

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stayputnik1 year ago
If you want a more secure Schrader valve, AutoZone and similar stores sell ones that are threaded and have a nut that secures it from the outside, so it's bolted in place with a rubber washer to seal the hole. I believe they're rated at somewhere around 100-150 psi, and they look great because they're chromed and shiny.

These would work: http://www.autozone.com/autozone/accessories/Mr-Gasket-4-pcs-straight-short-screw-on-mount-chrome-tire-valve-stems/_/N-25cj?itemIdentifier=125882_0_0_
batonas1 year ago
interesting burst disk system, I didn't know burst disks can be used in air cannons, thought they are only used in hybrid ones.
Kaiven (author)  batonas1 year ago
Yeah I thought the same, so I did some research ;)
freeza361 year ago
This reminds me of the blowguns my friends and I made, but times 200. Awesome
Informative, and I like the design with the slide loader.

(Also, as the Editor of Play, Offbeat is the channel where awesomeness like this belongs!)
Kaiven (author)  mikeasaurus1 year ago
Thanks! I'm glad I stuck it in the right category.
pwnag31 year ago
Might design a magnetic flap valve type thing (reusable burst disk(ish type thing))
CaseBoy1 year ago
how do you make the nail dart ammo?