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Loop Morph
Moderator: Torsten
- Paul Arden
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Loop Morph
Hi Guys,
I found this very interesting today. I was going through the 90ft carry on a log video and looking at the morphing loop, when I noticed something that I didn't expect. I had always thought that the bottom point of the "bouncing bomb" / Sexyloops logo loop was put there by the rod tip at maximum counterflex. However that is clearly not the case in that video. It appears to be the momentum of the line in the loop which forces line downwards and indeed the loop expands/opens significantly after the rod has completely recovered.
You can see this by playing the video backwards and forwards around the beginning of the loop formation.
https://www.sexyloops.com/movies/loop_morph.mov
https://www.sexyloops.com/movies/loop_morph3.mp4
(Same file, just different formats).
You thoughts?
Many thanks,
Paul
I found this very interesting today. I was going through the 90ft carry on a log video and looking at the morphing loop, when I noticed something that I didn't expect. I had always thought that the bottom point of the "bouncing bomb" / Sexyloops logo loop was put there by the rod tip at maximum counterflex. However that is clearly not the case in that video. It appears to be the momentum of the line in the loop which forces line downwards and indeed the loop expands/opens significantly after the rod has completely recovered.
You can see this by playing the video backwards and forwards around the beginning of the loop formation.
https://www.sexyloops.com/movies/loop_morph.mov
https://www.sexyloops.com/movies/loop_morph3.mp4
(Same file, just different formats).
You thoughts?
Many thanks,
Paul
- Lasse Karlsson
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Re: Loop Morph
The bottom point is there where the rodtip moved towards in the end of Flex.
Its like the old diagram of an open loop showing how energy is send in alot of different directions, in the BB we just have one major (direction of the cast) and one minor (at a right angle to the first) and the minor diaappears after a while when its slack is picked up
At least thats how I see it, looking forward to your clip, cant watch your links.
Cheers
Lasse
Your friendly neighbourhood flyslinger
Flycasting, so simple that instructors need to make it complicated since 1685
Got a Q++ at casting school, wearing shorts
Flycasting, so simple that instructors need to make it complicated since 1685
Got a Q++ at casting school, wearing shorts
- Paul Arden
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Re: Loop Morph
That's what I expected to see (your top video) but not what happens in this video.
- Paul Arden
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Re: Loop Morph
Unfortunately YouTube renders the shit out of it. You can see the loop far better by downloading the videos from the links in the first post. What is happening is that the bottom part of the loop continues to travel downwards, even after the rod has recovered to the straight position RSP2 and the fly line continues to travel downwards for quite a few frames, opening the loop and the lowering the wedge shape's bottom point.
Cheers, Paul
Cheers, Paul
- Paul Arden
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Re: Loop Morph
Ok have a look at this and how the bottom of the loop continues to travel downward, well after the rod has recovered and even after the bottom of the wedge has started travelling down the lake. It appears to me that it is the momentum of the line in the loop that, in this case at least, is forming the bottom of the wedge. It's a hell of a lot clearer if you download the file and play back and forwards. The rod tip never dips below the water's edge on the opposite bank.
Cheers, Paul
Cheers, Paul
Re: Loop Morph
The line has mass. You threw the tip down and the line kept going down because the tip gave it momentum in that direction, just as the tip earlier provided the line with momentum away from you. It seems pretty straight-forward: am I missing a trick here?
It would have kept going down too, had the fly leg not pulled it out and upwards, eventually morphing the loop to a point.
Cheers,
Graeme
It would have kept going down too, had the fly leg not pulled it out and upwards, eventually morphing the loop to a point.
Cheers,
Graeme
FFi CCI
Re: Loop Morph
I suppose another way to think of this is that you've thrown two loops: The first one travelled away from you, and shortly after, you threw another one downwards. The first loop pulled the second one straight because it had a lot more line in its fly leg than the second one did (which was pretty much a square front about 6' high when it started life).
Cheers,
Graeme
Cheers,
Graeme
FFi CCI
- Paul Arden
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Re: Loop Morph
Not missing a trick, Graeme. Only I was of the same belief as Lasse that the bottom of the wedge always translated back to MCF. In fact we've been saying that for two decades
Cheers, Paul
Cheers, Paul
- Paul Arden
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Re: Loop Morph
I'm not sure i want to think about throwing two loops, Graeme It's one loop that morphs below the lowest rod tip position. I measured the pixel height of the max loop size against the pixel height of me; the loop is 8ft wide at maximum.
Cheers, Paul
Cheers, Paul
Re: Loop Morph
Yeah, it's a bit "out of the box", but if we agree that "a loop forms when the line overtakes the tip" and the tip was heading down before the line overtook it, what else can it be?
Well, it could be a "vertical mend", I suppose ....
Cheers,
Graeme
Well, it could be a "vertical mend", I suppose ....
Cheers,
Graeme
FFi CCI