The Limit? Extreme High Tech Slingshot

Discussion in 'Crazy contraptions' started by JoergS, Sep 15, 2011.

  1. JoergS

    JoergS Administrator

    5,803
    109
    63
    <embed pluginspage="http://www.macromedia.com/go/getflashplayer" src="http://www.youtube.com/v/DO_Meq0Hiac" width="425" height="350" type="application/x-shockwave-flash" wmode="transparent" quality="high" scale="exactfit"></embed>
     
  2. DukaThe

    DukaThe New Member

    215
    0
    0
    U use rollers more and more. Thats great <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2">
     

  3. DanielBenford

    DanielBenford New Member

    160
    0
    0
    i think i would struggle to pull that, but im just weak
     
  4. McMilchreis

    McMilchreis New Member

    155
    0
    0
    That will do underarm slaps... a nice variation.
     
  5. John S

    John S New Member

    197
    0
    0
    How long did it take to build?
     
  6. Ryan Wigglesworth

    Ryan Wigglesworth Senior Member

    1,570
    0
    0
    I really got to get some rollers designed.... I am missing out on a lot of extra power I think .
     
  7. petersonOD

    petersonOD New Member

    178
    0
    0
    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>Ryan Wigglesworth wrote:</b></span></td></tr>
    <tr><td class="quote">I really got to get some rollers designed.... I am missing out on a lot of extra power I think .</td></tr>
    </table>
    <span class="postbody"><br><br>I know right? They might add a little unsightly bulk and unwanted look but damn are those things cool. </span>
     
  8. Simon J

    Simon J New Member

    23
    0
    0
    This is a clever design. I think I could add 500mm to my current draw length with a similar design as we can have wrist braces in England.<br><br> With a little tweeking it would become very compact indeed. But I have to ask how much difference does it make to the power, surely if it was so great everyone would using them? Is it worth the effort?<br><br>What do the chrony tests show for this compared to the same BB size, rubber width and same arm lengths?
     
  9. venomot

    venomot New Member

    12
    0
    0
  10. snowmann

    snowmann New Member

    20
    0
    0
    #1 - are these Closed Wide Linear Ball Bearing , needle roller bearings, or steel tubes with small round bearings on each end ?? <br><br>#2 Where do you get the long bearings you used here ?? eBay ?? or local suppliers... because I can only seem to find similar items in <strong>Industrial supply catalogs</strong>, here in the states... but I'm not ready to commit to buying 500-1000 units just to get some to try, let along have the $ to buy them in those quantities.<br><br>#3 or.. do you make them up yourself from parts, etc ???<br><br>#4 - THANKS for any Info !!!
     
  11. Tysonspapa

    Tysonspapa New Member

    907
    0
    0
    we have small companies here that supply us with ball bearings for motors and fans. u should try something like that.
     
  12. snowmann

    snowmann New Member

    20
    0
    0
    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>Tysonspapa wrote:</b></span></td></tr>
    <tr><td class="quote">we have small companies here that supply us with ball bearings for motors and fans. u should try something like that. </td></tr>
    </table>
    <span class="postbody"><br><br>What kind of fans & motors ? Industrial or Consumer products ? <br><br>or perhaps more easy - what applications are these wide bearings used in ( Electrical, Automotive, Mechanical ) etc ? that should aid me in tracking some down, Thanks..</span>
     
  13. Tysonspapa

    Tysonspapa New Member

    907
    0
    0
    ventilation fans for building applications. wwe get them from skf. they have a english website, <br><br><a href="http://www.skf.com/portal/skf/home?lang=en&site=COM" target="_blank" rel="nofollow">http://www.skf.com/portal/skf/home?lang=en&site=COM</a><br><br>hope that helps, maybe they got a store somewhere near you, they sell cash and in small amounts.
     
  14. snowmann

    snowmann New Member

    20
    0
    0
    do you have the <a href="http://www.skf.de" class="postlink" target="_blank" rel="nofollow">skf.de</a> link to the specific bearing ? that would help identify the type of bearing so I could track them down over here in the states, or some similar type or bearing, thanks....
     
  15. Tysonspapa

    Tysonspapa New Member

    907
    0
    0
    yer,<br><a href="http://www.skf.com/portal/skf_de/home" target="_blank" rel="nofollow">http://www.skf.com/portal/skf_de/home</a>
     
  16. studer1972

    studer1972 scooter trash

    657
    0
    0
    What's the "official Jeorg" name of this design?