Walter & Group.....
This string of messages is important to study. It speaks to the correct use of CONSTANT ACCELERATION rather than the incorrect term, "accelerated acceleration" which I used some time ago in this forum. Our physicists have taught us a great deal ! My thanks to Jerry for bring this up.
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Gordy and Bruce:
Thought I would address this one to the two of you for some input: This
concerns acceleration as I think I have a fair "grip" on wrist rotation.
We have used the term accelerated acceleration. I am thinking primarily on
distance casting where the stroke is longest. What is the nature and speed
of the stroke?
Do you see the stroke as starting slow with and ending fast as in the car
analogy via Al Crise analogy Truck, Ford, Ferrari ? Or is it closer to
the baseball or tennis swing when the ball is upon you and you have to
swing now where you have a more even but powerful and quicker stroke.
Another way of stating my concern so you will understand: I am distant
casting and I have drifted, layback and reached back as far as I can to
increase the stroke length, the line has reached to the stretching point
and I am ready to start forward for that ohh ahh magnificent 200 foot long
cast: Do I start as fast as I am capable and maintain the same speed to
wrist rotation and stop? Or is the stroke one of increasing accleration
with the major speed at the last of the stroke just prior to wrist
rotation?
Hope this is not to confusing.
Thanks, Jerry Puckett
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Hi Jerry,
Only have time for a short response, I've been out playing.....
"Accelerating acceleration" is definitely NOT what you want, in spite of
what you've heard. All our studies with the casting analyzer show that that
best casts are those made with acceleration that is as constant from
beginning to the end of the stroke as possible. In nearly every case where
we improve a good casters cast we end up concentrating on fixing
non-constant acceleration first. Nearly all good, but not great, casters
we've worked with started their acceleration too early, and too slowly,
that is one of the key defining differences between good casters and the
great. If your loops aren't perfect I can state with near certainty that
you need to do two things to improve them. First, delay rod rotation just a
bit longer and make sure when you do start acceleration it is as constant
as possible from start to stop. Next, make sure your stops are very abrupt.
It is the combination of very constant acceleration followed by a hard stop
that results in the very straight tip path that makes the best loops.
Some translation prior to rotation is good to help pull slack from the
line, but getting the rotational part of the cast right is far more
important.
Hope this makes sense....
Bruce
Scientific Anglers/3M
4100 James Savage Rd.
Midland, MI 48642 USA
Tel: 989-496-1113
Fax: 989-496-3374
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Bruce....
I'm afraid I was the one who used the term, "accelerated acceleration" in a message to my Study Group quite a while ago. That was my concept to explain smooth uninterrupted acceleration to yield maximum rod tip speed just prior to RSP.
I've since corrected that concept after learning a great deal more about the physics of speed, velocity, and acceleration from some of the engineers and physicists with whom I've discussed these issues.
As in writing texts, one sometimes finds himself having to back track as he goes through a learning continuum . Unfortunately, all didn't get the followup messages based upon more advanced information !
Walter Simberski of our Study Group is going to follow-up with a LOOP article on the correct use of these terms. He's truly qualified to do this !
Thanks for setting Jerry straight. I'll share this with the rest of our Group so they all get the message.
Gordy