Shooting circular sawblades with the slingshot

Discussion in 'Non-Firearm Weapons' started by JoergS, May 29, 2011.

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  1. JoergS

    JoergS Member

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    Circular sawblades are about as dangerous to be shot from a slingshot as it gets. Heavy. Sharp. Unpredictable in flight.

    Seems like the perfect challenge for us here at The Slingshot Channel!

    It turned out quickly that rotational speed is needed in order to stabilize the flight of the blade. Otherwise it will tumble and loose speed quickly, as shown in two slow motion scenes. So a special weapon was devised that adds this rotation to the saw blade, and the effect is quite impressive.

    A shot of the blade into a watermelon demonstrates the destructional potential of this slingshot invention.

    http://www.youtube.com/watch?v=JrHFxscunOA
     
  2. RX-178

    RX-178 Member

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    Joerg, between this and the machete launching slingshot, I can't play Dead Rising 2 without thinking of you!
     
  3. BADUNAME37

    BADUNAME37 Member

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    Joerg,

    I really appreciate your patience and your ideas! It takes much perseverance and ingenuity to come up with all the things you have invented and created!

    I often get a loud laugh when I see what it is you are pulling out THIS TIME!


    LOL!

    Keep up the good work, I love it!


    ;)


    PS I'm glad I don't live next door, I would always be at your house helping you with the ideas! I also wouldn't like a big slice out of my wife's car fender!
     
  4. BADUNAME37

    BADUNAME37 Member

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    Now to make the blade separate from the middle wooden piece before leaving the slingshot!
     
  5. Mp7

    Mp7 Member

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    beer steins are next.
     
  6. hso

    hso Moderator Staff Member

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    I'm in awe.

    Now if we could put that creative genius to use on other things like time travel!
     
  7. The Highlander

    The Highlander Member

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    Impressive as always!
     
  8. mole

    mole Member

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    My wife and I were watching a movie the other day. At one part a sword goes sailing through the air and sticks into a tree. My wife turns to me and asks, "Where's Joerg?"

    Next you need to do billard balls.

    mole
     
  9. Double Naught Spy

    Double Naught Spy Sus Venator

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  10. JShirley

    JShirley Administrator Staff Member

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    Awesome. I really did laugh out loud.

    Have you done a canister slingshot yet?
     
  11. Vonderek

    Vonderek Member

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    The rubberized/stabilized slingshot must be the NATO version. The Russian version is the one without stabilization to induce yaw to the sawblade
     
  12. Guns and more

    Guns and more member

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    "Here, hold my beer, watch this!"

    I'd add a front vertical foregrip, I cringed at the thought of my fingers that close to a spinning saw blade.

    Be carefull, we'll be getting the BATFE-SB
    and we'll have to have a permit to go to Home Depot.

    But......to sum it up in a word: COOL!
     
    Last edited: May 31, 2011
  13. JShirley

    JShirley Administrator Staff Member

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    Joerg,

    Is there a practical way to slide the dowel from the saw? Maybe fasten the rod attachment with strong magnets, and have a stop to strip the dowel pieces as the saw exits the track?

    John
     
  14. KodiakBeer

    KodiakBeer member

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    I'm still waiting for the chainsaw slingshot...
     
  15. Sam Cade

    Sam Cade Member

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    I'm waiting on a slingshot that shoots slingshots.


    Or in lieu of that, the worlds most powerful spear gun.
     
  16. JoergS

    JoergS Member

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    My upcoming new projects is shooting large diameter (.79") aluminum tubes, sharpened on one end, with internal fins for compactness so I can fire a few of them at the same time.

    Working name is "Flesh Sampler 3000".

    What do you guys think?
     
  17. KodiakBeer

    KodiakBeer member

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    Hhhmmmm... The corpses would look like they were killed by lamprey eels, which would throw the forensics people off your trail!
     
  18. JShirley

    JShirley Administrator Staff Member

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    I think the aluminum, being low-density, will bleed velocity very quickly.
     
  19. BADUNAME37

    BADUNAME37 Member

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    Is that for taking core-samples of the bad guy's body?

    LOL
     
  20. MachineCrossbow

    MachineCrossbow Member

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    Amazing job, Joerg! You're like Gordon Freeman in
    Half-Life 2 in Ravenholm. Apart from the beard
    and the glasses, of course. :fire::evil::fire::evil::fire::evil:

    About your next project involving simultaneous launching
    of multiple .79 alu pipes: Sadly, the internal stabilizator
    fins wouldn't work, because the flow inside the pipe
    is always parallel(roughly) to the wall and any fins.
    Your problem is well known from the case of multiple
    unguided rocket launchers: they
    use folding fins. There are two kind of those: one which
    folds out about the longitudional axis, and the one which
    opens like an umbrella, but instead of
    a waterproof layer, there are many fins.
    I guess these mechanical solutions would be prohibitively
    and needlessly complicated, so I think you might
    want to glue a paper tube on the end of the pipes,
    the longer, the better. See drawing.
    One problem: those light paper tubes should whitstand
    the launching force, so should the glueing. Maybe
    the rubbers can be attached to the pipes from
    the front, or something.
     

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  21. MachineCrossbow

    MachineCrossbow Member

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    I have another ideas for this, just a second...:banghead:
     
  22. MachineCrossbow

    MachineCrossbow Member

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    OK, got it:

    I would use a paper tube with a slightly smaller (0.5 cm~0.2 inch)
    diameter inside the metal tube. By this it would be protected
    from the launch force. After launch, the ram air pressure
    forces the inner tube out of the bigger one.* The front neck
    of the inner tube should be thickened by glueing a few
    additional rounds of paper around it, and the same
    should be done to the rear muzzle of the bigger
    tube, but from the inside. This prevents the inner
    tube from falling out. The interlocking distance
    along the longitudional axis must be big enough
    to deal with the moment on the inner tube.
    (From wind pressure, if the projectile is misaligned to
    the wind.)

    *If not, put something in the way of the wind,
    increase the cross section of the inner tube
    in the direction of the wind somehow.
     

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  23. MachineCrossbow

    MachineCrossbow Member

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    I think the most simple solution is to get rid of the many pipes,
    and use one with the same weight, but bigger size. You can
    add stabilizing spin to it by a twisted-pair rubber launch.
    See drawing again...:D
    It would be a big killer rotating ring.:evil:
     

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  24. MachineCrossbow

    MachineCrossbow Member

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    Like them?
    :eek::barf:
    :eek:
     

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  25. MachineCrossbow

    MachineCrossbow Member

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    Hi,

    here's another idea: [attachment]

    The lower dowel part (bolt) should be attached to the rubber band so that it
    cannot rotate (no slip between rubber and bolt).
    Upper rubber band should slip.
     

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