Angular Momentum with Tobias Hinzmann

Tobias Hinzmann was kind enough to submit a couple of very interesting videos showing some work he has been doing in regards to angular momentum using high quality super slow motion videos. I posted them here because I thought they were very well done. He obviously put a ton of work into these. I thought they would be of value to anyone interested in the finer mechanical engineering aspects of what happens when we cast a fly line on a rod.  Although he uses overhead casting (because its way over my head) some of the principles of overhead and spey casts are similar.

Center of the rotating mass in fly casting from Tobias Hinzmann on Vimeo.

Contribution of angular momentum in fly casting from Tobias Hinzmann on Vimeo.

5 thoughts on “Angular Momentum with Tobias Hinzmann

  1. Yes Tim,
    between the casting strokes there is always a decellaration – regardless performing an overhead cast or any kind of anchor cast. So a ‘continuous’ loading is always impossible. But during a single casting stroke a continuous load is possible could be very useful. I think to use the term ‘tension’ instead of ‘load’ could help – however, to me ‘tension’ this is a better physically phrasing and this is the way how I understand this CM/CL theory.

    1. I agree Tobias. A continuous load spey cast is impossible, Lord knows I have tried. Tension is indeed a better word. I think it will catch on. Thank you very much for your comments!

  2. Greg Holt annotated my video, that he feels the fly rod could “unroll” like shown on the first video above “Center of the rotating mass”. I think this video could explain the physical reason behind this feeling. Even if an overhead cast is shown on this video, for the final forward cast it should be true for “anchor casting” as well.

    1. Thanks and yes I believe it does apply, however I think that it only really matters after the caster is in the key position and I’m not sure it matters how you arrive there as long as you get there With a good D or V loop. How it applies between the sweep and the forward stroke is what I question. Hope that makes sense. Thanks for your involvement Tobias, I really appreciate it. Your presentation is superb, even if the subject matter is a teeny weenie bit over my editorial staff’s head. (me)

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