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Lefty_tailing_loop.mov
gordonjudd
736 views
Left Kreh's handpath for producing a tailing loop.
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Flow of Rotation Center on 40 foot cast
gordonjudd
481 views
Blue dot tracks the instantaneous center (I.C.) movement on forward cast. I.C. changes from near the shoulder to to around the hand as the rod is rotated on a forward cas...
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rod tip vibration on a tilted axis 45 degrees from the effective spine
gordonjudd
303 views
Initial vibration have nearly straight tip tracking then begins to show some tip whirl as the vibration amplitude is reduced.
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rod tip vibration on effective spine axis
gordonjudd
147 views
The vibration on the effective spine axis exhibits tip whirl that increases as the vibration amplitude decreases.
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2nd mode vibration of fly rod
gordonjudd
368 views
Shows how the tip moves when the rod butt is moved back and forth quickly to excite a 2nd mode vibration shape. Because of rotatry inertia coupling effects, the tip vibrate...
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tip follows mass
gordonjudd
171 views
With a force on the tip, the tip follows the straight up and down path of the moving mass.
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free tip oscillation
gordonjudd
194 views
When the rod is deflected in line with the static spine axis, the resulting tip path of the vibrating rod is elliptical rather than straight up and down.
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slow transition of radius in spinning mass
gordonjudd
70 views
The work done in reducing the radius of the spinning mass is less than the friction and aerodynamic losses. Consequently the rotational energy with the short radius is les...
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fast transition of radius of spinning mass
gordonjudd
50 views
The work energy involved in reducing the radius of the spinning mass results in more energy in the spinning mass with a short radius than it did with the original large rad...
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Lefty Kreh in Slow Motion
gordonjudd
28,588 views
Lefty Kreh False Casting to carry 50 feet of line
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