A question about rubber

Discussion in 'General Slingshot Discussions' started by dannyboy, Jul 2, 2012.

  1. dannyboy

    dannyboy New Member

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    Hello all.<br><br>I have a design in mind that I'm, going to draw up and eventually make, but before I go any further I need to know about rubber.<br><br>The design requires the use of round section rubber, like you get on spearguns, but I notice that most of you guys use exercise bands. Is speargun rubber any good? Shall I carry on with my design as in is or shall I rethink?<br><br>I've never made a slingbow before, but I have made conventional crossbows, longbows, spud guns and the like before, so I'm looking forward to the challenge.
     
  2. JoergS

    JoergS Administrator

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    You can of course use speargun rubber, but even the thinnest type has a lot of draw weight. Plus, it is heavy and handslaps can be painful. <br><br>Speargun rubber requires very heavy projectiles as its max speed is low (maybe 50 m/s). Flat bands (Thera Band etc.) are much faster at a far lower draw. <br><br>If you plan to use regular arrows, I do not recommend speargun rubber at all.
     

  3. dannyboy

    dannyboy New Member

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    Thanks for the reply Joerg.<br><br>What about the round section exercise bands that thera band make. I tried to post a link, but as I'm a new member I couldnn't<br><br>Its kind of central to my design that it is round section.<br>I intend to fire ball bearings, but have a long term plan to fire flechettes, using a discarding sabot system.<br><br>Maybe its too complicated....
     
  4. poudreverte

    poudreverte New Member

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>JoergS wrote:</b></span></td></tr>
    <tr><td class="quote">Speargun rubber requires very heavy projectiles as its max speed is low (maybe 50 m/s). Flat bands (Thera Band etc.) are much faster at a far lower draw...</td></tr>
    </table>
    <span class="postbody"><br><br>I wonder where we can find data about the speed of differents rubber bands or tubes. <br><br>How do you know that value of 50 m/s ? Do you know it for flat therabands ? is the rubber faster than a steel spring of the same power for exemple (in traction I mean)?</span>