Hawaiian style test minilance launcher

Discussion in 'Show off your homemades!' started by JoergS, Mar 16, 2012.

  1. JoergS

    JoergS Administrator

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    In order to do some tests for the chest mounted lance thrower, I madea simple handheld launcher for the "arrows" in the fashion of a Hawaiian sling scuba speargun. <br><br><a href="http://en.wikipedia.org/wiki/Hawaiian_sling" class="postlink" target="_blank" rel="nofollow">Read about it on wikipedia</a><br><br><a href="http://www.bluewaterhunter.com/shopsite_sc/store/html/media/biller_hi_shaftsonly.jpg" class="postlink" target="_blank" rel="nofollow">See a photo of the Hawaiian sling here</a><br><br>Just some TBG rubber (13cm x 5cm x 2,5cm, two bands per side), which gets stretched to about 65 cm. So it is prestreched in undrawn condition.<br><br>This is absolutely frightening! The stainless steel tip (made from a 12mm rod) embedds itself deeply into a wooden plank, and flies straight as a ruler. If you shoot it 80 degrees up, it beautifully arches down and sticks in the ground. Nice!<br><br>Shot from the chest mounted one, the draw will be much, much harder. But I keep thinking - maybe I need to make a hand weapon based on this little prototype, too.<br><br>Once again I am amazed by the power of the rubber-wrap-around attachment. Slippery aluminum tube, direct pull - no give. None.<br><br><br><div style="margin:auto;text-align:center;width:100%">
    <a href="http://2.bp.blogspot.com/-ZcUI3lnD3ZA/T2OF6SC_2DI/AAAAAAAABdE/l4S4A1Nmk_E/s1600/Spearthrower1.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://2.bp.blogspot.com/-ZcUI3lnD3ZA/T2OF6SC_2DI/AAAAAAAABdE/l4S4A1Nmk_E/s400/Spearthrower1.JPG" border="0" alt=""></a><br><br><br><a href="http://1.bp.blogspot.com/-WYWhY7IXzJk/T2OF8D7FEkI/AAAAAAAABdM/9eseRSDMrPg/s1600/Spearthrower2.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://1.bp.blogspot.com/-WYWhY7IXzJk/T2OF8D7FEkI/AAAAAAAABdM/9eseRSDMrPg/s400/Spearthrower2.JPG" border="0" alt=""></a><br><br><br><a href="http://1.bp.blogspot.com/-1HC1NseQK3I/T2OF-YozKoI/AAAAAAAABdU/pjKkY4ueV3k/s1600/Spearthrower3.JPG" class="postlink" target="_blank" rel="nofollow"><img src="http://1.bp.blogspot.com/-1HC1NseQK3I/T2OF-YozKoI/AAAAAAAABdU/pjKkY4ueV3k/s400/Spearthrower3.JPG" border="0" alt=""></a>
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  2. CaptainBacon

    CaptainBacon Knowledgeable Man

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    I remember doing something similar with an office rubberband and a mechanical pencil in order to shoot toothpicks. <br><br>I'd be curious to see how the submersion of the device impacts the cooling effect of the drawn rubber, since water is more thermally insulative than air.
     

  3. onnod

    onnod Im from Holland, isnt that weird?

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    that looks deadly and so cool(and like the penil launcher i use to shoot pencils in the ceiling of my [​IMG] sorry for crappy picture
     
  4. sotiris

    sotiris New Member

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    I made a modified Hawaiian sling last year and used it underwater a few time.It is really accurate and powerful once you get the hang of it.I used a steel tube, about 50 cm long, on one end of which i attached a wood piece, that looked like a barell extension( about 2cm of wood around the steel tube and 10 cm sticking out) on top of a handle.The handle had a hole, just above where my hand held it, used to insert 30 cm of thin speargun rubber.i used a standard spear at the end of which i drilled a hole (i inserted a piece of very strong string in the hole with a loop at each end, one loop was small, to fit my index finger, and the other one large enough to to fit the three remaining fingers) and carved a notch.I think the spear was 1m long.The way i fired it is quite simple.I inserted the spear from the front of the weapon , put the string attacked to the rubber in the notch and pulled back on the finger string the same way you would pull on a bow string.
     
  5. PDK73

    PDK73 New Member

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    Hi Joerg, what kind of range are you shooting? Does the lack of fletching reduce accuracy at some point? I'm wondering because I'm working on an arrow gun and haven't decided on a barrel inside the shaft (fletched) or outside the shaft (unfletched). Build wise each has pros and cons. Can't wait to see the finished product <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1">
     
  6. ketansa

    ketansa New Member

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    Master Jorg, <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1"><br>it is very cute and handy. It can be strapped to the wrist easily. ))
     
  7. SkauneJohan

    SkauneJohan Member

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    very cool, seems like a variation of the pump action/pencil launcher sortof <img src="http://illiweb.com/fa/i/smiles/icon_cool.gif" alt="Cool" longdesc="6">
     
  8. JoergS

    JoergS Administrator

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>skaunejohan wrote:</b></span></td></tr>
    <tr><td class="quote">seems like a variation of the pump action/pencil launcher sortof <img src="http://illiweb.com/fa/i/smiles/icon_cool.gif" alt="Cool" longdesc="6">
    </td></tr>
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    <span class="postbody"><br><br>Exactly. I plan to make a bigger, chest mounted version from the pencil launcher. The "arrow" is made from 15mm aluminum tubing (40 cm long) and 12 mm stainless steel, sharpened rods (the tips). <br><br>This test weapon is to find out if these arrows fly straight enough without fletching. So far, they do, thanks to the heavy tip.</span>
     
  9. Droolp1g

    Droolp1g New Member

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    <font color="red">Ketansa:it is very cute and handy. It can be strapped to the wrist easily. ))<br><br><font color="black">I wouldn't advise it unless you able to wrap you arm and wrist with leather?<br><br>And besides it's not a very practical idea.<br><br>But ya i made similar to this back in my school days too the only thing i would do with this is to put two angles rods at either side of the tube entrance where the pouch is resting so you can reload without having to mess around with the band.<br><br><br></font></font>