Walter & Group.........
Michael Jones quotes Al Crise ... and asks a question:-
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Allen Crise: "We get much deeper rod loading due to the Rotation
started with the tip lower."
and, this is interesting to me, because then we talk about the
variables and constants of controlled casting: SLP, Slack, Power,
Pause & Stop, Drift, Follow through, and and overall Stroke Length, we
do not always consider the 'casting arc', and how that may effect
translation + rotation values. Considering that there are many
variables that arrise from style-influence, generally speaking:
Question: "If there is a broader casting arc, is there going to be
more rotational influence, or does the % (of rotation vs. translation)
stay the same independent of the casting arc?" Just trying to wrap my
brain around that one.
Michael Jones
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Michael...
These messages were on the effects of using DRIFT. As pointed out, one of the things DRIFT can yeild is the availability of greater stroke length for the next cast. This is the way we generally describe it. If we look at it in detail, however, we see that it really yields increased availibility of TIP TRAVEL . THIS IS THE COMBINATION OF STROKE LENGTH (THE DISTANCE MOVED BY THE HAND) AND ROD ARC (THE CHANGE OF THE ANGULAR POSITION OF THE BUTT SECTION OF THE ROD FROM THE START TO THE COMPLETION OF THE CAST.)
Now, in actually making the next cast, it is up to the caster as to how much translational movement and how much rotational movement to use. Most efficient casters start with some translational movement. Then there occurs a mixture of translational and rotational movement. As the cast progresses, rotational movement predominates and is solely responstible for the casting arc.
It is during this rotational phase that by far the greatest length of tip travel occurs in a given period of time resulting in much greater acceleration than ever could be accomplished with translation alone. Tip speed is heavily related to the magnification of rotatory hand motion due to the length of the fly rod . (The hand moves a few inches while the rod tip moves several feet.) As Al said, we get most of our rod loading during rotation, as well.
Of course, there is a lag in tip speed during the cast, because of the bend of the rod. The greatest tip speed has been measured at the interval between the STOP of the hand and the RSP (rod straight position). As you know, it is at RSP that the fly line can overtake the rod tip thus forming the loop. While this is followed by counterflex and rebound, these two events occur after the cast, itself and are present even with the use of drift and followthrough which also occur after the completion of the cast.
What is sometimes hard to digest, is that all this is combined with what Joan Wulff terms, the LOADING MOVE followed by the, POWER SNAP . This sounds as though it is two different moves, though when done properly it looks seamless. I look at it as the need for CONSTANT ACCELERATION TO A STOP. To me the word, "constant" means that it has to be SMOOTH. The word, "STOP", to me, is a relative term meaning the most abrupt negative acceleration the caster is able to achieve. As a teaching tool, the term stands as written.
Gordy
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From David Lambert (MCCI)
Gordy and Al:
Regarding drift:
I believe whether you call the drift a move, stab, or point -- the speed
at which you 'drift' the rod in the direction of the unrolling loop is
salient. The rod tip must move at approx. the speed of the line. Move
it much faster than the unrolling line and you've created slack; slower
and you begin to pull against the rod leg, which accelerates the
turnover. Down and fast gives you a fat bottomed loop, possibly
redirecting the line.
Another note: In casts for demo or distance, I will often drift
slightly later and longer to take advantage of gravity and allow the
now-straightened line to drop (while still moving away from the
caster). This changes my trajectory, my flight path, without me doing
much other than noting the angle change to reposition for it on the
delivery cast.
Thanks for this board, Gordy. It's often illuminating, often challenging.
David Lambert
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David ... Thanks. Good points I'd not included. Gordy
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From Gary Meyer.....