2 thoughts on “IMG_4007-2

  • 19th September 2017 at 3:21 pm

    Very nice instructional video and thank you for taking the time and effort to post this.

    I understand the geometry involved making the Zkururin. Would a slight weight on each end improve performance? Just a thought👍

    • 19th September 2017 at 3:45 pm

      Hello Lenny

      Thanks very much! I enjoyed doing it. I’m not sure if adding weights at the end would help or not. I haven’t personally tried it because the way I make mine doesn’t lend itself to doing so. Other people have tried (two examples, not a complete list):

      To my knowledge nobody has done any rigorous analysis. I think it would would be worth looking at the cycloid to see if it could be improved with a geometric approach or someone could do a numerical optimisation based on the dynamics. Both things I would like to do but haven’t got round to trying!


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