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Search found 1302 matches

by gordonjudd
Thu Jul 02, 2020 3:13 pm
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 580

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

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). Merlin, I agree. I think the bendform shapes of a forced rod are probably different than when th...
by gordonjudd
Wed Jul 01, 2020 5:37 pm
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 580

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

A death grip produces the clamped-free beam, hence a difference oscillation. Carol, As noted above I don't think you can get a clamped constraint on the butt regardless of how firm you grip the rod. The mechanical stiffness of the wrist is not sufficient to get the same constraint as provided by a ...
by gordonjudd
Wed Jul 01, 2020 4:07 pm
Forum: Flycasting
Topic: Where on the cork do you grip the rod?
Replies: 16
Views: 580

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

The first free-free” mode is the preferred mode for the rod as it unloads, although it is constrained by the grip. Merlin, I don't think that the pressure from the grip can come anywhere near the constraint you get by clamping the rod. Thus I think the rod will recover in the free-free mode regardl...
by gordonjudd
Sat Jun 13, 2020 2:08 pm
Forum: Flycasting
Topic: Laser Drill for Tracking
Replies: 10
Views: 493

Re: Laser Drill for Tracking

Have you tried different grips? Carol, That is the first thing I would check to get better tracking on the back cast. I think the thumb on top grip promotes turning the wrist at the end of the back cast and causes the inward track you mentioned. Stand behind a good caster and see where their thumb ...
by gordonjudd
Fri May 22, 2020 2:51 pm
Forum: Flycasting
Topic: Double Haul increasing rod flex?
Replies: 38
Views: 2110

Re: Double Haul increasing rod flex?

So, Mike's example fits well with either an early haul during back cast unrolling or a late haul during forward cast unrolling. Dirk, We agree on the direction of the bend produced by haul on the backcast. The haul velocity on the back cast is dominated by the rotation of the rod so its max velocit...
by gordonjudd
Thu May 14, 2020 2:56 pm
Forum: Flycasting Physics
Topic: Square snaps
Replies: 37
Views: 1619

Re: Square snaps

I trace the lines in Archicad and print pdf from there using Foxit Reader PDF Printer. Dirk, I can imagine tracing all of those line shapes took a lot of tedious effort and admire your perseverance in producing such interesting overlays of two waves propagating on the same line . I was hoping that ...
by gordonjudd
Wed May 13, 2020 3:12 pm
Forum: Flycasting Physics
Topic: Square snaps
Replies: 37
Views: 1619

Re: Square snaps

Why doesn't the mid-leg appreciably fall during such circumstances? This is indeed a very good question!! The first bend reminds me of those bead chain experiments where the chain is free falling under gravity and the chain lifts before it falls. Paul, I think it is the same rho_{l}*V_{tangential}^...
by gordonjudd
Wed May 13, 2020 2:54 pm
Forum: Flycasting Physics
Topic: Square snaps
Replies: 37
Views: 1619

Re: Square snaps

Print a PDF, NOT set to "print as image", quite a large image size, then open the PDF in Photoshop and export as an image. Dirk, What program are you using load in your .mov (or some other video format) file and then printing that file as a non-image pdf file? I admire your perseverance in digitizi...
by gordonjudd
Wed May 13, 2020 3:26 am
Forum: Flycasting Physics
Topic: Square snaps
Replies: 37
Views: 1619

Re: Square snaps

I now compiled a fingerprint trace of "cast B" over the period presented on the chart. Dirk, Where is the video for that "B" cast? That will help me decipher your overlay plots. How are you making that overlay plot that shows the multiple line shapes so clearly? I'm thinking on a universal approach...
by gordonjudd
Sat May 09, 2020 7:45 pm
Forum: Flycasting Physics
Topic: Square snaps
Replies: 37
Views: 1619

Re: Square snaps

Can you try and rephrase it using "fly leg bend" (the one on the left in all the images and footage) and "rod leg bend"? Dirk, Can you get an idea of what the line velocity around fly leg bend (the forward going bend) that you initiated with the first upward movement of the rod and how that compare...

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