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Search found 1475 matches

by Merlin
Wed Sep 23, 2020 6:47 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

We spend too much energy on useless topics. The loop is not a wave then, so what? What would it change if it was? I can understand that the strict wave equations do not apply completely to a loop and what does it brings to knowledge?

Merlin
by Merlin
Wed Sep 23, 2020 12:21 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

Graeme You create a completely artificial situation to justify your theory (how many followers). Do you cast vertical lines when you fish? In the north hemisphere at least, our lines are somewhat horizontal as we start the cast. It seems not to be the case in Australia. Please do not try to convince...
by Merlin
Tue Sep 22, 2020 11:59 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

Post #19
The tip trajectory. You may include a circle if you wish. At some time it does not represent a mend anymore.

Errare humanum est, perseverare diabolicum.

Merlin
by Merlin
Tue Sep 22, 2020 6:11 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

So this looks like a snap cast.
Rope.JPG
Rope.JPG (42.5 KiB) Viewed 151 times
I agree with Paul, so would you find the compromise of saying that a loop is a "wave" be acceptable Graeme?

No argument will ever convince you that the loop is not a "transverse" wave.

Merlin
by Merlin
Tue Sep 22, 2020 12:18 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

Graeme

Many thanks in advance to give an answser to my post #21 about a vertical snap cast from the balcony, the line being vertical at start. Would you then consider it is a tranverse wave travelling along and horizontal (long virtual) line?

Merlin
by Merlin
Sat Sep 19, 2020 7:58 am
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

For the time being there is a disagreement on the name :D To me a loop is a wave in the general sense, there are various types of waves and there is none that fits all situations. In publications authors use the word wave and it does not refer only to fly lines (e.g. chains). To me using the word wa...
by Merlin
Wed Sep 16, 2020 12:55 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

Graeme

Instead of starting by a transverse wave in a vertical line, make a snap vertically. Is the shaped loop coming from the snap a transverse wave then?

Merlin
by Merlin
Wed Sep 16, 2020 9:35 am
Forum: Flycasting Physics
Topic: Shooted cast
Replies: 74
Views: 3253

Re: Shooted cast

I think I am releasing post MCL but as soon after as I am physically able. As soon as I sense (imagine?) the rod butt has begun to unload, I open the fingers of my line hand. Hi Gary Because of the lag time between rod unloading signal capture - brain - opening fingers can be about 80 ms (40 ms in ...
by Merlin
Tue Sep 15, 2020 6:24 am
Forum: Flycasting Physics
Topic: Shooted cast
Replies: 74
Views: 3253

Re: Shooted cast

I still think the haul speed is low Paul I read again the study performed by Ulrik and Grunde three years ago, and max haul speed for a competition cast with trout tackle and MED5 was in the 8 m/s to 12 m/s range. Playing with the 2D model I find that the “best” compromise for PHV is to have it aro...
by Merlin
Mon Sep 14, 2020 9:36 am
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6130

Re: Analysing loop propagation

Wave, energy or momentum, it depends of the type of approach, qualitative or quantitative. I consider wave as a qualitative one. I agree that a mend is a transverse wave but the loop is not, the displacement is not perpendicular to the medium. The string analogy may be a trap since it does not handl...

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