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Search found 1377 matches

by Merlin
Thu Jul 02, 2020 9:51 am
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 566

Re: Where on the cork do you grip the rod?

Hi Gordy Although the wrist joint cannot be locked as a clamp the situation varies from something close to a clamp as one drives the rod, to something close to a free end as we stop the rod (in a general sense). I can make all (5) various situations illustrated before appear with a (light) rod, even...
by Merlin
Wed Jul 01, 2020 8:48 am
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 566

Re: Where on the cork do you grip the rod?

Carol Here are some explanations about the vibrations of a rod. Under some circumstances (input frequency), the rod can take a stable shape (a mode) showing points on the rod which seem to be fixed, rod material rotating around. These are the “nodes”. Nodes are attracted by mass, meaning that if you...
by Merlin
Wed Jul 01, 2020 8:42 am
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 566

Re: Where on the cork do you grip the rod?

Hi Gary I also had to check the class number :D The “fulcrum” location, in others words the instantaneous center of rotation, varies during the cast and it is possible that if you use your fingers as described (what Paul explained he does for his 170 cast), then you have a first class lever at the v...
by Merlin
Tue Jun 30, 2020 4:03 pm
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 566

Re: Where on the cork do you grip the rod?

Hi Carol First, thanks to Gary for giving information on Mac Brown’s approach. I hope I understand the explanation which should be slightly corrected. A SH fly rod is a “third class” lever, le rotation point (fulcrum) being below the rod end (at elbow level or something). To become a “first class” l...
by Merlin
Fri Jun 26, 2020 1:40 pm
Forum: Flycasting
Topic: “Whoosh” and other sensations
Replies: 38
Views: 1401

Re: “Whoosh” and other sensations

Hi Dirk

Since you can make the different sounds on command, I guess you can describe the differences in casting motion.
Intuitively, I would say that the woosh relates to the butt and the swish to the tip of the rod.

Merlin
by Merlin
Sat May 23, 2020 12:40 pm
Forum: Flycasting
Topic: Double Haul increasing rod flex?
Replies: 38
Views: 2079

Re: Double Haul increasing rod flex?

Haul timing vs MAV.JPG Mike Here is an illustration of the effect of timing on rod tip path, the reference being the timing for the Maximum Angular Velocity (rotation), MAV. An early haul (green line) leads to a drop in the tip path which should cause a tail in the line. A later haul can avoid the ...
by Merlin
Sun May 17, 2020 6:41 pm
Forum: Flycasting
Topic: Double Haul increasing rod flex?
Replies: 38
Views: 2079

Re: Double Haul increasing rod flex?

Paul The trend is the following: the counterflex diminishes as you haul later and later. Maximum speed does not necessarily correspond to the latest haul, but to the earliest timing corresponding to a no tail tip path. Since it is safer not to be too close to the "tailing area" for haul timing, one ...
by Merlin
Sun May 17, 2020 3:19 am
Forum: Flycasting
Topic: Double Haul increasing rod flex?
Replies: 38
Views: 2079

Re: Double Haul increasing rod flex?

Sorry Mike, the rod bends backwards, not forwards, during the haul.

Merlin
by Merlin
Sat May 16, 2020 7:29 pm
Forum: Flycasting
Topic: Leader designs
Replies: 102
Views: 5180

Re: Leader designs

There are a couple of rules of the thumb which are good to know. The main parameter controlling the rollover speed is the length of the leader, and the second one is its mass. To give some idea, reducing a leader by two to three feet is equivalent to increasing its mass by half a gram. Reducing tipp...
by Merlin
Sat May 16, 2020 7:17 pm
Forum: Flycasting
Topic: Double Haul increasing rod flex?
Replies: 38
Views: 2079

Re: Double Haul increasing rod flex?

The haul subject has been covered extensively in the past, including its mechanism. The extra bend of the rod comes from the change in momentum of the carried line which becomes shorter, and this change in momentum is equivalent to a force on rod tip. It may also come from friction depending on the ...

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