combustion burst disc mini

Boom! The classic potato gun harnesses the combustion of flammable vapor.
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thespeedycicada
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I have created a very ghetto but very powerful mini.the pen tubes are not just taped together i used epoxy and tape its small but packs a WHOLLOP!! it will go thru 2 cans probaly more but i only had two.When i fist shot this i was expecting the little pop! minis make but the BANG! this made scared the crap out of me i really wasnt expecting it.please excuse the crap/clutter all over the floor i had to take these pics quick (im using my sisters camera and she gets pissed if i use it).I now have a new love of bust discs and will be making a pneumatic bb bust disc soon hopefully.Enjoy!
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once again sorry for the clutter/crap.Any way thats the whole gun.
once again sorry for the clutter/crap.Any way thats the whole gun.
P1010137.JPG (37.4 KiB) Viewed 2331 times
chamber and ignition.
chamber and ignition.
the firing setup i pretty sure that piece of plastic is a used burst disc.
the firing setup i pretty sure that piece of plastic is a used burst disc.
P1010136.JPG (38.44 KiB) Viewed 2331 times
the "indoor" ammo
the "indoor" ammo
P1010144.JPG (38.87 KiB) Viewed 2331 times
the carnage!
the carnage!
P1010143.JPG (33.81 KiB) Viewed 2331 times
lookin down the barrel.
lookin down the barrel.
P1010146.JPG (37.32 KiB) Viewed 2331 times
current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
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Killjoy
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very nice. I Like how it has a long barrel, don't see that muhc. You should make a stock for it and have it like a rilfe.
Stanford Class of 2012

"In the end our society will be defined not only by what we create, but what we refuse to destroy"- John Sawhill
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jon_89
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how well does your burst disk work?
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thespeedycicada
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Joined: Sun Aug 12, 2007 1:28 am

very well actually it noticably increses power and noise. today im hopefully getting a new barrel.And to day i will start constrution of my bb burst disc pneumatic.
current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
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jon_89
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what fuel do you use?
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thespeedycicada
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Specialist 4
Posts: 429
Joined: Sun Aug 12, 2007 1:28 am

butane or ether.
current projects: co-axial piston valve.Status DONE!
S.P.E.C.S update mk 1 construction begining in febuary all the maths for it are done plans are drawn up and parts are listed.
NEXT project:auto piston valve.
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PVC Arsenal 17
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Location: United States

Unless it's a hybrid the burst disc can't possibly make it stronger... louder maybe.

Correct me if I'm wrong...
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DYI
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Combustion acts like the "valve" in a combustion launcher, and takes several milliseconds to take place. If the pressure is contained until it reaches the desired level, then the "valve" is faster, so it should increase performance if done properly.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
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