Al Crise on translational movement

Walter & Group....

 

 

From Al Crise, MCCI, Texas.  Here we have description of translational movement in different (Texas) language.  Hearing/reading concepts in different languages and thought processes helps build great teaching ability.  Knowing a concept in only one mode of _expression_ limits your ability to teach.

 

Gordy

 

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Howdy Gordy

 

 

I describe the translational movement this way

 Using the big powerful muscles of the upper arm and shoulder to get the rod and line moving in slack free direction. As the need for speed is increasing start the forearm is brought in to use.

Then as the max speed is needed the wrist is rotated These are the fine muscles that move the fastest.

 We have the rod moving we must maintain an "acceleration" to the cast. The highest speed is in the last 10% of the cast. Maintaining a 'smooth' (Bruce Richards term) application of power, with a Straight line path of the rod tip.

This gives a reason for the longer movement before the rotation of the wrist.

 The shoulder, upper arm, forearm, then wrist.

 Here in Texas it is hard to stop the wrist rotation without stroke. What I ask is that they only rotate the wrist a little at the end of the stroke. I well show the movement of the arm with out rotation first calling that "stroke" then add the rotation of the wrist calling it speed, or power for some, under control.

  If a mental picture is needed; a Truck gets it moving, the Ford gets it going straight, the Ferrari gets to 100 mph and STOPS.

 

ol Al