Walter & Group........
Regarding prefered terms and definitions:
Our FFF / CBOG Glossary Committee has a more difficult task to complete than you might think.
I was reminded of this upon reading a most interesting novel: THE PROFESSOR AND THE MADMAN by Simon Winchester .... a book of intrigue, dismal actions, obfuscation, insanity and murder ...based on actual facts about the more than half century long development of the Oxford English Dictionary.
(If you are the least bit interested, check out the 1st attachment. Thanks to Mark Krieder for providing it.)
Gordy
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The second attachment contains pictures relating loop size to rod length and flexibility (By Tony Loader, of Al Crise's Study Group.)
Here, is depicted the concept that longer and more flexible rods tend to yield larger loops than shorter and stiffer rods, even when the rod arc remains the same.
Rod arc : The angular difference in the position of the rod butt section between the start and the completion of the cast*
* My simplified, "working" definition. NOT an official Glossary Committee definition.
Gordy
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A few days ago, you will remember that Bruce Richards called attention to another relationship; that of rod bend/load to the amount of rod arc.
A basic rule of thumb emerges:
1.) Too much rod arc for the amount of rod bend = convex rod tip path = wide loop.
2.) Too little rod arc for the amount of rod bend = concave rod tip path = tailing loop.
3.) Correct rod arc for the amount of rod bend = SLP of the rod tip = small loop
Note that with all of these different relationships ..... including my observation that the use of one relationship can change the effect of another relationship and, therefore modify the loop size .........
# The relationship between the rod arc and the amount of line carried out of the rod tip and the length of the cast.
# The relationship between the rod arc and the rod length.
# The relationship between the rod arc and the flexibility of the rod.
# The relationship between the rod arc and the amount of rod bend/load (and, therefore the energy applied to the cast).
# The, "unloading of the rod" with respect to the level of the oncoming line
# The distance that the caster "speeds-up-and-stops" at the end of the cast (Lefty)
........we still end up with one simplistic common denominator:
THE PATH OF THE ROD TIP DURING ALL OR PART OF THE CAST DETERMINES THE SIZE OF THE LOOP
Gordy
Attachment:
Simon Winchester.email
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