Physics /

Walter & Group...

From Rene Hesse on the physics of fly casting :

Gordy,

The technical information in this forum is something I never studied in college. 

 

 I have to say I'm eating it up because there is a feeling of growth and mind expansion when I read it.

 

90% of the students I teach will never hear this in-depth information, however for the one person that is as excited as I am to read and learn the terms such as vectors-kinetic energy..., and then work the math and apply it to fly casting.....WOW! What a blast! We can connect on a whole different level.

 

Thanks,

Rene 

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From Walter Simberski : -

Gordy,

"2. Sometimes Server states the obvious. Physics is about stating the obvious, proving that

    the obvious is true, and building from there.

 

Well..... sometimes things may not be obvious at all, yet can be proven to be true.       G."

What amazes me is the number of times the things we think are
obvious turn out to be wrong. That's why it is so important to identify
these things and then prove or disprove them.

Another thing that amazes me is how often we hear a simple 
concept and then think that it should have been obvious all along.
SLP is one example, Bruce's 6 step method is another.

Some of us love delving into the nitty gritty physics and occasionally
this stuff is useful but it's the simple nuggets that really advance
our skill sets as instructors. After all, it's a rare treat to spend more
than a few minutes with a student. Being able to pass on something
useful that is going to have long term positive affects in that short
space is both the challenge and the reward.

Walter

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Walter.... True.  Bruce's six step method works very well.  A kind of epiphany.

 

 However, SLP (the straight line path of the rod tip) while seemingly obvious, is (as you know) an "incomplete truth".

 

An ALMOST straight line path of the rod tip is needed to form a tight loop, true.  If the caster were able to manage an absolutely straight line path of the rod tip throughout the entire stroke all the way to loop formation, there would necessarily be a collision between the fly line and the rod.  Most elite casters have a little bit of convexity to the path of their rod tips as they try to make tight loops when "straight line casting" for distance.

 

Same with the STOP.  As Troy and I have pointed out before, if we really have a stop as meaning instantaneous cessation of motion, this "brick wall" stop would yield all sorts of problems with the cast.

 

Some other parameters of casting which are seemingly "written in stone on the mount" are open to similar challenges.

 

That is the wonderful thing about fly casting.  Its so "fluid" and ever changing depending upon the caster, his equipment, his goals, and the conditions including weather and surroundings.  No two humans are built or move in exactly the same way.

 

It's like the mathemetician (you're the real thing )  trying to solve an equation with an infinite number of variables !

 

I daresay, that no two casts are ever exactly the same !

 

Your statement on challenge and reward is right on target.

 

Gordy

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