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Search found 1474 matches

by Merlin
Fri Oct 09, 2020 2:02 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Thanks for this good example James.
To close (I hope) the historical debate, here is another writing from Powell, dated 1919.
Powell 1919.JPG
Powell 1919.JPG (37.37 KiB) Viewed 189 times
He did not use the word "loop" at this time. Now one can speculate when the word was popularized in between 1919 and 1937.

Merlin
by Merlin
Wed Oct 07, 2020 6:30 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Michael Imagine one finds a document which tells that the word "loop" had the same meaning than by 1937, but 40 years ealier. What does it change? Nothing, change the word if you like, the physics behind remain the same. Powell's paper is technical and it is likely the very first one of that kind. H...
by Merlin
Wed Oct 07, 2020 8:46 am
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Michael The booklet ‘Essays on fly fishing’ contains a reprint of ‘The mechanics of fly casting’ The relevant text is in post #148, and Powell said “The tip bend produces what is generally termed a narrow loop or U in the line as it unfurls”. The term loop was thus already popular by 1937. Is there ...
by Merlin
Tue Oct 06, 2020 7:45 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

I m told it in essays from é.c. Powell 1919 (3 essays on flyfishing) book is not available anywhere. Indeed, I got my copy from Walton Powell (authors' son) himself when the Powell company was still alive. His grand son Press Powell published the "Essays on fly fishing" in 1989, it gathers texts fr...
by Merlin
Tue Oct 06, 2020 3:17 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Facts for you Michael The first single hand fly rods similar to what we know today appeared somewhere around 1870. They were longer (10 feet or more) than today. It is likely that the word "loop" as mentionned by Powell appeared during that period of time, as these rods commercially developped (end ...
by Merlin
Tue Oct 06, 2020 9:21 am
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Wavespey.JPG To me the “wavespey” cast is a repositioning of the line with the help of a rollcast instead of a sweep of the rod. The "loop" travels down to the point where its sunk part (line or leader, shown by the blue arrow) and reflects to the other side which completes the repositioning. Smart...
by Merlin
Mon Oct 05, 2020 3:31 pm
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Ivan It is pretty difficult to cast "under the hand", the fly leg being below the loop. Quite an academic question indeed IMHO. There are nice videos from Graeme showing that when a part of the loop hits an obstacle, the rest of the line keeps on moving forward because it has momentum . Eventualy a ...
by Merlin
Mon Oct 05, 2020 3:21 pm
Forum: Flycasting Physics
Topic: The Triple or Check Haul
Replies: 72
Views: 4998

Re: The Triple or Check Haul

Ivan

I guess you speak about eliminating the slack in the line, but here we consider the case where the line is rolling over (forward) and then the left hand or the rod tip pulls back on the line. Have a look at Gordy's video at the beginning of this thread.

Merlin
by Merlin
Mon Oct 05, 2020 12:12 pm
Forum: Flycasting Physics
Topic: Big wave
Replies: 4
Views: 304

Big wave

The original vision of the cast brought by Michael is questioning. I own a number of books and in some of them there is mention of a “wave” climbing along the rod and ending in the line which would represent the mechanism of the cast. The input from the caster is wavy, look at the records of a rotat...
by Merlin
Mon Oct 05, 2020 5:40 am
Forum: Flycasting Physics
Topic: Analysing loop propagation
Replies: 202
Views: 6127

Re: Analysing loop propagation

Another point: casting with a rigid rod (something experienced by a former member of the forum). If you cast with a rigid rod, the tip path will follow your 3D concept, and the line can be cast (although it is unpleasant). There is no vibration involved with the rigid rod: where is the wave aspect t...

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