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Why does the 170/stopless work

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Paul Arden
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Why does the 170/stopless work

#1

Post by Paul Arden » Sun Feb 17, 2019 12:15 pm

This is a question I was asked on FB but it’s nuts trying to answer a technical question there. So I thought I would throw it here.

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Paul
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grunde
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Why does the 170/stopless work

#2

Post by grunde » Sun Feb 17, 2019 12:59 pm

Line speed!
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George C
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Why does the 170/stopless work

#3

Post by George C » Sun Feb 17, 2019 1:29 pm

Why wouldn't it work? There is an acceleration (with turnover), then a deceleration (and tip travel below the path of highest line velocity) which creates a loop as the faster moving line passes the decelerated line... What else is needed for a cast?

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Graeme H
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Why does the 170/stopless work

#4

Post by Graeme H » Sun Feb 17, 2019 1:41 pm

There's enough mass outside the tip and acceleration of that mass to bend the rod properly, delivering a desirable tip path.

Without the line mass and acceleration, it doesn't work quite so well. Not enough bend in the rod = windscreen wiper.

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Graeme
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Paul Arden
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Why does the 170/stopless work

#5

Post by Paul Arden » Sun Feb 17, 2019 4:43 pm

Ok so why are the loops not big and open?
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James9118
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Why does the 170/stopless work

#6

Post by James9118 » Sun Feb 17, 2019 5:01 pm

Paul Arden wrote:Ok so why are the loops not big and open?
They are - to start with :???:

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Paul Arden
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Why does the 170/stopless work

#7

Post by Paul Arden » Sun Feb 17, 2019 5:27 pm

Hmmm, OK so why is the line speed greater?
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James9118
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Why does the 170/stopless work

#8

Post by James9118 » Sun Feb 17, 2019 6:04 pm

longer stroke - more work done on the line.

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Why does the 170/stopless work

#9

Post by Geenomad » Sun Feb 17, 2019 10:51 pm

James9118 wrote:longer stroke - more work done on the line.
Yep. More (net) force in the direction of the cast, notwithstanding lots of force not going in that direction, helped as Graeme says by rod bend being sustained deeper and for longer than "normal". Result? More of Grunde's line speed.

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Paul Arden
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Why does the 170/stopless work

#10

Post by Paul Arden » Mon Feb 18, 2019 12:59 am

What I say is that I think that the rod tip speed is greater if we rotate at maximum speed through the point when the loop forms, instead of truncating the stroke so that the rod tip straightens there. I also think it’s very important to mention that while the rod tip pulls a lot of line away from the target, it’s because there is so much like being carried that the majority of it still goes to target.

However there is a more technical question in this. Does the rod begin unloading before the stop because of 1) the rod angle to the line and/or 2) the self unloading mechanism we often hear about. And if it does, does that result in greater tip speed?

Cheers, Paul
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