JG940 Carbon Tube Slingshot

Discussion in 'Show off your homemades!' started by uberfreak9, Sep 23, 2013.

  1. uberfreak9

    uberfreak9 Lord Of Crows

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    Hi Joerg and friends, I wanted to make a lightweight frame from carbon tube so I used a couple of my old broken hockey sticks. I call it the JG940 after my venerable father Jack Gamble (who suggested I use carbon instead of steel tube) and the 940 represents the extra 940mm of draw length. It is pretty powerful. Pretty simple in design but very sturdy and it has to be for all the extra forces at maximum draw. The bands were roughly cut the whole 940mm length tapered from 5 inches to 2 inches. Mr. Sprave, thanks for the inspiration. I'll try to post a youtube video of me shooting stuff with it on my youtube channel (An Evolving Ape) in the next few weeks.
     

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  2. Jeremy

    Jeremy Senior member who totally rocks a pink Scout! Pink

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    Looks cool. I'd love to see it being shot.
     

  3. Brazilviking

    Brazilviking Thread Hijacker

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    Does this.......thing.....shoots?
     
  4. dolomite

    dolomite Banned

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    looks like an erector set...trippy.
     
  5. G_Y

    G_Y aiming the less

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    Looks like a big chance
     
  6. JoergS

    JoergS Administrator

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    Does this one have an arm brace? If not - wrist strain could be a bit high for strong bands.

    I also think the backwards extended arms for the rubber attachment is too narrow, drawing back could be a bit awkward. But maybe I am wrong - let us see your video!
     
  7. Dangerfield

    Dangerfield Australia

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  8. G_Y

    G_Y aiming the less

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    Great military lath look. All fences could be in danger, maybe?
     
    Last edited: Sep 24, 2013
  9. onnod

    onnod Im from Holland, isnt that weird?

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  10. CEZ

    CEZ New Member

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    Wow, does it work?
     
  11. Wanimator

    Wanimator Banned

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    Wow that has some power.
     
  12. bigjim

    bigjim New Member

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    Think you need a lot of power to pull that .
    But then ...
    :)
     
  13. uberfreak9

    uberfreak9 Lord Of Crows

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    Jeremy, yep, I will post a link to a video here once it is done.
    Joerg, you are correct that it has a arm brace. I use a nylon strap that I cinch around my upper arm. It is not a weapon for a quick draw fight. The narrow aperture at the rear does indeed make for a slightly awkward draw but I also do not have huge viking arms either. It only weighs 2.2lbs (1kg) so it is quite easy to manage despite the bulky encumbrance of it. I have shot 50cal steel balls, golf balls, 1-inch steel balls, various rocks 20-40g, and some plastic eyeballs with it.

    Thanks for all the interest.

    The photo below was the first one I made strapped with only 2-inch bands, with shorter posts (it is taller now to accommodate wider bands).
     

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  14. uberfreak9

    uberfreak9 Lord Of Crows

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    here is a teaser clip for a future video of some slingshot destruction with the JG940

    [ame]http://youtu.be/w7qqW5hjMdc[/ame]
     
  15. BeMahoney

    BeMahoney Builder of things

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    But how?

    If I learned it right, that music starts playing if bands are lengthened by 400%..
    If the bands are 940mm long, fully stretched that would be 5 times 940mm
    minus length of the aperture..? that would be roughly 3.76 METERS from the
    fork!Doesn´t this make it a Two-Person-Shooter?

    Did I get that wrong?

    Be
     
  16. uberfreak9

    uberfreak9 Lord Of Crows

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    By no means is it "rubber efficient". My thinking is that because it is overkill on rubber it allows me to put the 5 inch wide band on it, but of course it has to taper otherwise I couldnt draw it back to my ear (it starts to test my finger grip strength after a few shots), which has the benefit of maximizing power. It can shoot all sizes of ammo but the .50cal steel ball is wicked. Here is a photo of a can being hit by a stone (the stone is visible in front of the driftwood log to the far left).
     

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  17. BeMahoney

    BeMahoney Builder of things

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    What a bad can deserves..

    You just killed all the hunting threads! :)
    And those lovely bleeding cans dont scream an run away :)..

    I now understood why you builtit like that!

    best regards,

    Be
     
  18. uberfreak9

    uberfreak9 Lord Of Crows

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    Youtube video for the JG940 CTS is now viewable!

    [ame]http://youtu.be/j6koUF4p88k[/ame]
     
  19. tokSick

    tokSick Senior Member

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    This thing is.... special!!
    Looks realy powerful but a little bulky.
    Nice job.