Buttless Starship! Legal in Germany.

Discussion in 'Show off your homemades!' started by JoergS, Oct 23, 2011.

  1. JoergS

    JoergS Administrator

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    A "Starship" is the slingshot term for a forwards extended slingshot. As the wrist strain would be enormously high without a wrist brace, starships always have such a brace, and look a bit like the Enterprise NCC 1701 - hence the name.<br><br>Gary ("Flatband") recently started to play with full butterfly starship shooting, a new style he <br>calls "Superfly". Now I have to try that too! Unfortunately arm braces are illegal in Germany. <br><br>So I used and older design of mine (the "Gloveshot"), because that concept avoids unwanted turning of the slingshot in the hand. Much needed for these not undangerous experiments! I simply sawed off the original "fork arms" and attached a 50 cm draw extension (20"). <br><br>It works! Takes practice, and even weak bands are kind of hard on the muscles in my forarm. But hey, everything for power!<br><br><br><div style="margin:auto;text-align:center;width:100%">
    <a href="http://3.bp.blogspot.com/-39fRleDv-jI/TqRIUjYPzDI/AAAAAAAAA_k/wxOub16DENI/s1600/SawStar3.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://3.bp.blogspot.com/-39fRleDv-jI/TqRIUjYPzDI/AAAAAAAAA_k/wxOub16DENI/s320/SawStar3.JPG" border="0" alt=""></a><br><br><a href="http://4.bp.blogspot.com/-DZeOt62gxS4/TqRIVnwFqHI/AAAAAAAAA_s/x-794YxJK-Y/s1600/SawStar2.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://4.bp.blogspot.com/-DZeOt62gxS4/TqRIVnwFqHI/AAAAAAAAA_s/x-794YxJK-Y/s320/SawStar2.JPG" border="0" alt=""></a><br><br><a href="http://2.bp.blogspot.com/-l9mmaFZZxlU/TqRIW4qWwuI/AAAAAAAAA_0/QTfTbMQ9KkA/s1600/SawStar1.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://2.bp.blogspot.com/-l9mmaFZZxlU/TqRIW4qWwuI/AAAAAAAAA_0/QTfTbMQ9KkA/s320/SawStar1.JPG" border="0" alt=""></a>
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  2. Flatband

    Flatband New Member

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    Joerg, <br> you did it Bud! I knew you would find someway to get around the stupid laws. It's legal and she works-COOL! Superwristfly!!! <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1"> Flatband
     

  3. 3bears

    3bears New Member

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    get the video uploaded Joerg <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"> this looks to be a good one!
     
  4. JoergS

    JoergS Administrator

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    I think I solved the wrist strain issue. <br><br>A simple length of rope, attached to the front of the frame. You step on it with the forefront foot so that the fork can not go up higher than horizontally straight. Then, you can shoot upwards or downwards simply by shifting your upper body back and forth a bit.<br><br>Very easy, and totally efficient!
     
  5. Tobias

    Tobias New Member

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    good idea! the rope on the feet is maybe better than a wrist brace <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1"><br>have you try a counterweight on the front?
     
  6. Antraxx

    Antraxx #7

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    The fact that a long draw is quite powerful is not "that" new is it?<br>your novitzkenegger desgin showed that pretty good imo.
     
  7. JoergS

    JoergS Administrator

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    Well, there is one big difference: Speed. Rubber looses power very quickly. When you go for speed records, you need to release IMMEDIATELY. Just waiting one second means you loose at least 10%. The biggest challenge is to draw out heavy bands in full butterfly, then release as early as possible while still hitting the target (so the chrony picks up the result). <br><br>Slingshot crossbows will always be slower than conventional slingshots. The fastest slingshot is a conventional frame with an extreme draw length extension, pulled out to full butterfly.
     
  8. Ryan Wigglesworth

    Ryan Wigglesworth Senior Member

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    You would have to be a monster *like joerg* to pull this but less starship lol! I gotta keep working out! <img src="http://illiweb.com/fa/i/smiles/icon_cool.gif" alt="Cool" longdesc="6">
     
  9. JoergS

    JoergS Administrator

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    Ryan, the trick is that the draw weight of rubber has nothing to do with the band length. <br><br>The only important factors are the band thickness and the stretch factor. <br><br>A band with the same pouch and fork dimensions has the same draw weight, no matter if you stretch it from 10 cm to 50 cm or from 50 cm to 250 cm. <br><br>Strong people can get enough shot energy from short bands. The weaker you are, the more important is a long draw if you want some power. <br><br>The deadliest combination is a hard draw AND a looong stretch, of course.
     
  10. DukaThe

    DukaThe New Member

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    Great invention Joerg <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2">
     
  11. Ryan Wigglesworth

    Ryan Wigglesworth Senior Member

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    Ah <img src="http://illiweb.com/fa/i/smiles/icon_bounce.gif" alt="bounce" longdesc="27"> . thank you, I have yet to acquire a scale of some sort to figure that out yet ... <img src="http://illiweb.com/fa/i/smiles/icon_cool.gif" alt="Cool" longdesc="6"><br><br><img src="http://illiweb.com/fa/i/smiles/icon_twisted.gif" alt="Twisted Evil" longdesc="13"> I should practice full butterfly some more, seeing Tobias do it was pretty inspiring <img src="http://illiweb.com/fa/i/smiles/icon_twisted.gif" alt="Twisted Evil" longdesc="13">
     
  12. JoergS

    JoergS Administrator

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    The buttless starship may be legal in Germany, but it is a bitch when it comes to controllability. It "wants" to turn upwards, and even with light bands is hard to shoot it.<br><br>Then came the rope idea. Attached to the front, and beeing trod on, you have total control. There is even less shaking than on freehand shooting!<br><br>I have attached two layers of TB Gold, cut 45cm x2,8 cx 1,8cm, with 12 kg (26.4lbs) draw. Easy to control!<br><br>I encourage even the wrist brace starship shooters to try this simple mod. I think it may be good for control = accuracy. As you can see, it is easy to change your aim simply by moving your body a bit. No resetting of the foot is needed.<br><br><div style="margin:auto;text-align:center;width:100%">
    <a href="http://3.bp.blogspot.com/-pZtWXfYy-X0/TqW6XfD16UI/AAAAAAAABAA/TjIcs5G1ogw/s1600/Rope3.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://3.bp.blogspot.com/-pZtWXfYy-X0/TqW6XfD16UI/AAAAAAAABAA/TjIcs5G1ogw/s320/Rope3.JPG" border="0" alt=""></a><br><br><br><a href="http://1.bp.blogspot.com/-FNezHlSdyYs/TqW6YkKpp6I/AAAAAAAABAI/IFP-Tc9ZuuM/s1600/Rope2.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://1.bp.blogspot.com/-FNezHlSdyYs/TqW6YkKpp6I/AAAAAAAABAI/IFP-Tc9ZuuM/s320/Rope2.JPG" border="0" alt=""></a><br><br><br><a href="http://3.bp.blogspot.com/-3JfBsSDiRsQ/TqW6Z_wFxSI/AAAAAAAABAQ/56kHmIcye8M/s1600/Rope1.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://3.bp.blogspot.com/-3JfBsSDiRsQ/TqW6Z_wFxSI/AAAAAAAABAQ/56kHmIcye8M/s320/Rope1.JPG" border="0" alt=""></a>
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  13. PandaMan

    PandaMan New Member

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    Cool. I look forward to seeing a video of you shooting this way (assuming there will be a video)<br><br>PandaMan
     
  14. Flatband

    Flatband New Member

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    "The Rope Trick" I love it! <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1"> Flatband
     
  15. JoergS

    JoergS Administrator

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    Maybe I also need to come up with a release on a stick, to further increase the draw!
     
  16. CEZ

    CEZ New Member

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    That's a cool idea, if the rope works so well maybe just try a longer rod for the fork?
     
  17. JoergS

    JoergS Administrator

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    Yes, that is an option I thought about. A full meter maybe?
     
  18. CEZ

    CEZ New Member

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    Go for it! Or you can have rollers on it and have the rubber extend all the way under the slingshot?
     
  19. DukaThe

    DukaThe New Member

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    Nice <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2">
     
  20. JoergS

    JoergS Administrator

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    Rollers are a different form of draw length increase, with the disadvantage of friction.