Fastest Theraband blue SS, experiment 2 fail again

Discussion in 'General Slingshot Discussions' started by otta88sun, Dec 12, 2012.

  1. otta88sun

    otta88sun New Member

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    Hi,<br>i repeated the experiment (FOR 10mm steel ball) with really really light pouch (less than 1g with string attatched) of this video<br><a href="http://www.youtube.com/watch?v=eRzTCKMg-lY" target="_blank" rel="nofollow">http://www.youtube.com/watch?v=eRzTCKMg-lY</a><br>but again i can't reach more than 70mps.... the only change from original video is a shorter band set, 19cm instead 26cm.... but i added another band per side (to be sure of pouch weight <img src="http://illiweb.com/fa/i/smiles/icon_wink.gif" alt="Wink" longdesc="15"> ).<br>So, i know, shorter bands = less speed gained, but i just expected to get MIN 90mps.... not 68mps.... today is sunny, but is close winter here, is not hot and bands are not really cold too!<br><br>So i'm thinking that OR the video is a fake OR you need really HOT bands to shoot at that speed!<br>THera are not other logical explanation...<br><br>PS: my half butterfly drawlenght is 90cm (so i used 19cm of bands lenght), in that video he used full butterfly, at max 120-130cm...however I can't expect to get the half speed for only 30-40cm drawlenght less!
     
  2. FIAAO

    FIAAO Failureisalwaysanoption

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    Power comes from long acceleration, you should use the band calculator for the fastast bands.
     

  3. Tobias

    Tobias New Member

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    your problem is the draw lenght! he made 119 mps with 10mm and full Butterfly.<br>you made more than half with 70mps and your half butterfly everything is ok so far.
     
  4. CEZ

    CEZ New Member

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    Well Torsten is kind of a record breaker, not easy to match:)<br>I think you can get a couple of mps more if you release as soon as you get full stretch, use a full butterfly or albatross, shoot in a warm room instead outside and use lots of layers of really thin thera band blue or green even or pure latex. But still would be probably short of Torstens results:)
     
  5. otta88sun

    otta88sun New Member

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    i dont like full butterlfy or albatross, them require too much space for harm, i m in love with half-butterfly, coz allow me to aim better too. <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1"><br>So i'll never get that speed with my half butterfly <img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1">
     
  6. CEZ

    CEZ New Member

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    Well, you can try and replace draw length with draw weight if you are strong enough for it. Joergs JB slingshot pistol is a great example of this, it has only a couple cm draw length but still quite a lot of power. <br>I however have found out that I can't keep a steady arm with high draw weight, also handslaps are a bitch:p
     
  7. That draw length makes a massive amount of difference. As they said you can try upping your draw weight but with shorter draw it is all but hopeless to match the results you are after. I need to find what band or tubes to use to get around 100 pound draw (still under what I can shoot with a bow) for use with "Nothung" my slingbow that is in the makings. Even that probably will not shoot as fast as Tobias's.
     
  8. Arturo Borquez

    Arturo Borquez Administrator

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>mikehunt042084 wrote:</b></span></td></tr>
    <tr><td class="quote">That draw length makes a massive amount of difference. As they said you can try upping your draw weight but with shorter draw it is all but hopeless to match the results you are after. I need to find what band or tubes to use to get around 100 pound draw (still under what I can shoot with a bow) for use with "Nothung" my slingbow that is in the makings. Even that probably will not shoot as fast as Tobias's.</td></tr>
    </table>
    <span class="postbody"><br>I agree, at the beginning I've experienced adding bands even I could deal with the extra force (and hand slaps) only gave me a marginal speed gain ... that's why I "evolved" to more light bands (no more than 2 per side) with a 3/4 albatross draw ... also found that long bands yields better accuracy ... </span>
     
  9. The issue I am having is finding something strong enough to use for my bands on the slingbow I am working on. (100 pound draw ideally) The issues I am facing are I would prefer a single tube rather than several layers of bands or doubled tube. I want the tubes for their durability (Since "Nothung" is ment solely for hunting) but I do not know where to find rubber tubes that strong lol.
     
  10. Arturo Borquez

    Arturo Borquez Administrator

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    Speargun rubber tubes ... Jeorg shows it <a href="http://www.youtube.com/watch?v=fLPjIhqI9Ww" class="postlink" target="_blank" rel="nofollow">HERE</a>
     
  11. Yes speargun rubber I remember that video, do they sell it on amazon or ebay? Though it is quite thick, I'll have to have a section of paracord in the middle to attach the bow string (or since I am making my own arrows I'll just make the knock to fit)
     
  12. otta88sun

    otta88sun New Member

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    So guys (thanks for all answer) u say that if i had bands per side or just do wider bands i can get the same speed with a shotrter bands right?
     
  13. meeeee!

    meeeee! New Member

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>mikehunt042084 wrote:</b></span></td></tr>
    <tr><td class="quote">Yes speargun rubber I remember that video, do they sell it on amazon or ebay? Though it is quite thick, I'll have to have a section of paracord in the middle to attach the bow string (or since I am making my own arrows I'll just make the knock to fit)</td></tr>
    </table>
    <span class="postbody"><br><br><a href="http://www.ebay.com/itm/4-FT-3-4-19mm-PRIMELINE-Speargun-Band-Sling-Rubber-Latex-Tubing-IN-ONE-PIECE-/271055364585?pt=LH_DefaultDomain_0&hash=item3f1c28a1e9" target="_blank" rel="nofollow">http://www.ebay.com/itm/4-FT-3-4-19mm-PRIMELINE-Speargun-Band-Sling-Rubber-Latex-Tubing-IN-ONE-PIECE-/271055364585?pt=LH_DefaultDomain_0&hash=item3f1c28a1e9</a><br><br><a href="http://www.ebay.com/itm/31-Inches-3-4-ID-x-1-8-x-1-OD-Natural-Latex-Rubber-Tubing-Heavy-Duty-/320966213327?pt=US_Dolls_Bears_Toys&hash=item4abb13becf" target="_blank" rel="nofollow">http://www.ebay.com/itm/31-Inches-3-4-ID-x-1-8-x-1-OD-Natural-Latex-Rubber-Tubing-Heavy-Duty-/320966213327?pt=US_Dolls_Bears_Toys&hash=item4abb13becf</a><br><br>either of these should give you the draw weight you want, or more.</span>
     
  14. Thank you for the links. I'll go with the black speargun rubber, never messed around with natural latex much but I know it's fairly fragile and won't hold up to well out in the woods.