Rotation/ Coupled Plane Pendula... Mac Brown

 

Walter & Group...............

 

From Mac Brown:-

 

Hi Gordy and Group,

I have been enjoying the threads and had a quick comment on all of this translational versus rotational motion. The late delay in rotation is key for some examples such as distance. However, many other forms may have little to no rotation, while others may wish for the line to really have the zip on it with the late rotation.

 

It has been interesting to say the least. I think the entire casting stroke is made up of rotation myself and that SLP (linear, translational, or even a simple term like straight) may sometimes be the goal (such as distance). I had a prof. Glen Liming explain this concept well for me while teaching at WCU. He said the entire stroke is making use of the whole body (he referred to this as a coupled plane pendulum). For whatever muscle group we wish to discuss during the casting stroke, it often is helpful thinking of this pendulum. In teaching, it is often good using this example of walking slowly and increasing to a run. The elbow , by example bends to match the increase tempo. The same things occur in casting.

 

For casting, we have the torso rotation, shoulder rotation, (a host of many others) and of course the late wrist rotation. The key for all of this ties into the thread on handicapp casting last week, using other styles (which capitalize on different body parts) when teaching. Tim Rajeff years ago told me that was one of the first things he finds out about his students. A surfer, minor league pitcher, golfer, etc... all will have predisposed muscle memories that enable them to learn a certain style with ease. All of the joints in the body rotate (not translational), to impart a goal of being as straight possible for certain casts (distance for sure). Good stuff!

 

Hope everyone has a fantastic holiday! Mac Brown

 

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Mac...

 

Ahhhhh....yes.  The caster ends up using all kinds of rotatory motion of the body in order to gain, "translation" of the rod prior to the rotational component of the latter part of the cast.

Can't deny that if we look at the whole picture !

 

Then there is the short cast on the trout stream where no distinct tranlational phase and very little, "loading move" is needed.

 

Gordy