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New York, 4:21 AM
Tue Dec 1
61 posts in the last 24 hours

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  • posts about #railguns more →

    DIY Rail Gun is Terrifying, Comes with Building Instructions

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    Rail Guns Over Pyongyang
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    Dsmvwl  Admin  Promote to frontpage Approve user Ban user ×
    Image of Gary_7vn Gary_7vn
    09/14/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    My grandad had a bunch of old Mechanix Illustrated and Popular Science magazines going back to the 40's and 50's. I have a clear memory of a cover story on how to build an electromagnet gun the sent an object forward using electromagnetic coils. The funny thing is that it was for kids. Ah the good old days, when you could shoot your brother's eye out...

    All the old issues are on google books, there is some really cool stuff on moon landings, robots, cities of the future.
     Reply
    Gary_7vn was starred Gary_7vn was unstarred
    Image of Phong Phong
    09/14/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    I don't really understand what 5.6kJ would be comparable too. More useful specs would be the FPS / PSI (of impact) maybe even temperature.

    I would have liked to see if it could embed something into a piece of wood.

    I am out of my element. No frame of reference here.
     Reply
    nutbastard: back from burningman promoted this comment Phong was starred Phong was unstarred
    Image of nutbastard nutbastard
    09/14/09

    @Mess Yo Self!: a .50 caliber browning machine gun bullet has 17.1kJ of energy - a little over 3 times what this thing puts out. same if it's fired from a barrett 50 cal.

    a comparable ballistic would be a winchester .458 magnum bullet, which would generate 6.8kJ- still higher than this thing, so figure a standard .45 (perhaps a magnum?) is about 5.6Kj
     Reply
    Edited by nutbastard at 09/14/09 4:08 PM nutbastard was starred nutbastard was unstarred
    Image of nutbastard nutbastard
    09/14/09

    @Mess Yo Self!:

    short answer: 5.6kJ is more than enough to fuck your day up.
     Reply
    nutbastard was starred nutbastard was unstarred
    Image of aerospaceman aerospaceman
    09/12/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    I could do more damage with a fart if I let it build long enough. And more fireworks if I hold a lighter to my rear rail gun.
     Reply
    Nahir promoted this comment aerospaceman was starred aerospaceman was unstarred
    Image of dingus dingus
    09/12/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    Impressive.
     Reply
    dingus was starred dingus was unstarred
    Image of TildaPulvillus TildaPulvillus
    09/12/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    My railgun :)

    The cardboard box has 12 layers of cardboard on the inside, and backed with a steel plate (1/16"). The plate had a bulge in the back, about .5" It was weighted down with a 25 pound steel block.

    This is quite a bit weaker than handguns. V2 will come close.

    This is for the ISEF.
     Reply
    Rosa Golijan promoted this comment TildaPulvillus was starred TildaPulvillus was unstarred
    Image of GreyHammer GreyHammer
    09/12/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    he needs this for hunting is obvio
     Reply
    GreyHammer was starred GreyHammer was unstarred
    Image of Pope John Peeps II Pope John Peeps II
    09/12/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    Yes. Terrifying. When it knocked over that cardboard box and whiffed a tablecloth into swaying gently, I certainly trembled at the new future of weaponry...
     Reply
    Pope John Peeps II was starred Pope John Peeps II was unstarred
    Image of GreyHammer GreyHammer
    09/12/09

    @Pope John Peeps II: he showed the boxes who is the boss.
     Reply
    Edited by GreyHammer at 09/12/09 10:36 AM GreyHammer was starred GreyHammer was unstarred
    Image of Pope John Peeps II Pope John Peeps II
    09/12/09

    @GreyHammer: The Box Nation rapidly turned away from dictatorship, and embraced the future that America promised. We were greeted as liberators. Tableclothistania is next.
     Reply
    Pope John Peeps II was starred Pope John Peeps II was unstarred
    Image of DeborahLavitz DeborahLavitz
    09/11/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    I really hope you are being sarcastic.

    Hard to tell sarcasm with so many techies inexplicably being so insanely authoritarian and the other half damn near anarchic - that comment could really go either way..
     Reply
    Rosa Golijan approved this comment DeborahLavitz was starred DeborahLavitz was unstarred
    Image of Rosa Golijan Rosa Golijan
    09/12/09

    @DeborahLavitz: I'm intrigued by the entire process, but terrified at the same time.
     Reply
    Rosa Golijan was starred Rosa Golijan was unstarred
    Image of RicketyCricket RicketyCricket
    09/11/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions

    And I thought they said: "Don't try this at home. Ever!"
     Reply
    Identity≈Spontaneity promoted this comment RicketyCricket was starred RicketyCricket was unstarred
    Image of Software_Goddess Software_Goddess
    09/11/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    I should make sure my restraining order against the X is still good before he sees this, because this is just the sort of weekend beer project I could see him working on.
     Reply
    Software_Goddess was starred Software_Goddess was unstarred
    Image of Julius Seizure - Canuck Julius Seizure - Canuck
    09/12/09

    @Software_Goddess: But, if he's halfway though a keg while he's working on it, he'll probably blow his foot (or n*ts) off - problem solves itself.
     Reply
    Edited by Julius Seizure - Canuck at 09/12/09 7:20 AM Julius Seizure - Canuck was starred Julius Seizure - Canuck was unstarred
    Image of Kaiser-Machead Kaiser-Machead
    09/11/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    I call dibs on this guy as my weapons specialist during the zombie apocalypse.
     Reply
    Kaiser-Machead was starred Kaiser-Machead was unstarred
    Image of HeavyMental HeavyMental
    09/11/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    is it the same 3 or 4 shots showed over and over again ?
     Reply
    Rosa Golijan promoted this comment HeavyMental was starred HeavyMental was unstarred
    Image of Rosa Golijan Rosa Golijan
    09/11/09

    @HeavyMental: It's seven separate shots.
     Reply
    Rosa Golijan was starred Rosa Golijan was unstarred
    Image of ooqooʞɐɾ_Is upside down! ooqooʞɐɾ_Is upside down!
    09/11/09

    In reply to DIY Rail Gun is Terrifying, Comes with Building Instructions
    What the fuck? When is the government gonna start REGULATING these things?!?
     Reply
    ooqooʞɐɾ_Is upside down! was starred ooqooʞɐɾ_Is upside down! was unstarred
    Image of Invisobel Invisobel
    09/11/09

    @DomoArigato_Jakooboo: Don't worry, I hear it's part of the new Health Care reform bill...
     Reply
    Invisobel was starred Invisobel was unstarred
    Image of anon anon
    09/12/09

    @Invisobel: yeah, cheaper and quicker than death panels.
     Reply
    Identity≈Spontaneity promoted this comment anon was starred anon was unstarred
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