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Stiffness and Tip speed

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bartdezwaan
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Stiffness and Tip speed

#1

Post by bartdezwaan » Wed Jan 16, 2019 10:44 am

The discussion about fly rod stiffness and casting distance is interesting.
Till shortly I took it for granted that stiffer rods cast further.
As with most things, nothing is what is seems.

Is it possible to theoretical analyze if rod stiffness determines the max tip speed that can be achieved?
I might have chosen the wrong parameters, so change them if needed :D

Cheers, Bart

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Paul Arden
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Stiffness and Tip speed

#2

Post by Paul Arden » Wed Jan 16, 2019 11:28 am

I think you should go back to a soft rod, Bart.
It's an exploration; bring a flyrod.

Flycasting Definitions

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bartdezwaan
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Stiffness and Tip speed

#3

Post by bartdezwaan » Wed Jan 16, 2019 12:11 pm

Paul Arden wrote:I think you should go back to a soft rod, Bart.
You wish! :p

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Paul Arden
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Stiffness and Tip speed

#4

Post by Paul Arden » Wed Jan 16, 2019 1:27 pm

I’ll swap the HT10 for an HT6. No charge.
It's an exploration; bring a flyrod.

Flycasting Definitions

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bartdezwaan
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Stiffness and Tip speed

#5

Post by bartdezwaan » Wed Jan 16, 2019 2:11 pm

No way! This rod will become a collectors item.
It is the rod the legendary King Bart set the BFCC record with in 2018 (and a lot more to follow).
It’s No. 2 in the range. Only some crazy polish guy owned one before him.

Cheers, Bart

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guest
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Stiffness and Tip speed

#6

Post by guest » Wed Jan 16, 2019 2:12 pm

I believe that the speed of light is the limiting factor for tip speed but I'd ask a physicist about quantum effects if I wanted to be certain
Bright but shite

IANACI - There’s no such thing as absolutes

Free the Mark One ☝️

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bartdezwaan
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Stiffness and Tip speed

#7

Post by bartdezwaan » Wed Jan 16, 2019 2:50 pm

Vince. You’re up for taking a serious attempt at this?
I am sure you can.
The speed of light also is the limiting factor for the speed of a car. That does not mean we can’t reason about how fast it will be given the engine, shape, etc. I am not saying the two examples are similar BTW.

Cheers, Bart

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Lasse Karlsson
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Stiffness and Tip speed

#8

Post by Lasse Karlsson » Wed Jan 16, 2019 3:32 pm

With or without a haul Bart?

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Lasse
Your friendly neighbourhood flyslinger

http://www.karlssonflyfishing.com

***Bring Mark back!!!!!! ***

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bartdezwaan
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Stiffness and Tip speed

#9

Post by bartdezwaan » Wed Jan 16, 2019 3:35 pm

I think we should leave to haul out for now.
And maybe treat arm and wrist rotation speed as constants.

Cheers, Bart

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Merlin
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Stiffness and Tip speed

#10

Post by Merlin » Wed Jan 16, 2019 4:02 pm

Bart

The important parameter is loaded speed, which depends of stiffness, of an inertial rod parameter (equivalent mass at tip) and of the mass of the carry.

I can compare a 906/908/910 set of rods, with or without haul. I understand that you want a given casting stroke (e.g. 170).

Would that fit your request?

Merlin
Fly rods are like women, they won't play if they're maltreated
Charles Ritz, A Flyfisher's Life

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