RE: One more thought

Title: Message

YES !!!

 

G.

-----Original Message-----
From: Walter Simbirski [mailto:simbirsw@xxxxxxx]
Sent: Monday, April 20, 2009 9:42 AM
To: Gordon Hill
Cc: Server Sadiki
Subject: Re: One more thought

Gordy,

 

You may find the following very interesting:

 

http://golfclubfittingsystem.com/_wsn/page3.html

 

Scroll down to the series of 6 shots showing a golf swing and corresponding club deflection

at various points in the swing. Just for interest you may want to try and make sense of what

the photos are showing you before reading the accompanying literature.

 

I think similar technology could be used when selecting a rod for a given caster and could

lead to improved rod designs or ways to enhance custom rod building by providing the rod

builder with some insights as to how to tune a rod for a specific caster.

 

Cheers

 

Walter

----- Original Message -----

From: Gordon Hill

To: 'Walter Simbirski'

Cc: Server Sadiki

Sent: Sunday, April 19, 2009 1:05 PM

Subject: RE: One more thought

Walter .....

 

I agree on all points.

 

Either repetitive stress injury or single force stress injury can result from the "hard stop".  The latter, particularly likely when the force is great as when using heavy tackle.  I'm convinced that this is one of the main causes of "tennis elbow" or "caster's arm" ( Lateral epicondylitis.) after casting.

 

As far as the rod fully straightening as near as possible to the end of the casting stroke:

 

That will likely be a "given" as we approach the definition of CASTING STROKE as ending with loop formation, since that occurs as the line can begin to overtake the rod tip .... and that has been shown to occur at or so close to RSP that even our high speed photography up to 500 fps has not separated the two.  (Perhaps loop formation and RSP will be a bit separated if we can study it with video capability of 10,000 fps....  We are going to try to do that this summer.)

 

Gordy

-----Original Message-----
From: Walter Simbirski [mailto:simbirsw@xxxxxxx]
Sent: Saturday, April 18, 2009 11:55 PM
To: Gordon Hill; Server Sadiki
Subject: One more thought

In order to have the most efficient casting stroke, i.e. the stroke with the least amount of wasted

energy and motion, we want the rod to fully straighten as near as possible to the end of the casting

stroke.

 

This has nothing to do with maximum energy transfer from the rod to the line. The reason is that once

the rod has fully straightened there is nothing we can do to increase line speed so any attempt to extend

the casting stroke beyond rsp could be viewed as wasted motion.

 

Of course we know that drift is not wasted motion since it helps us to set up for the reverse cast.

 

I also believe that a hard stop contributes to repetitive stress type injuries - Gordy you would be the

best judge of that...

 

Thanks

 

Walter