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  • Loop shapes - How do we observe them ? / Parabolic rods, more



    Walter & Group....

    Once again, I've placed the diagrams of "loop faces" in an attachment to make it easier for all to follow this string of messages.    G.

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    From David Lambert.  I placed his photo of the "Big Bad Loop" in a second attachment.  G.

    Gordy, hey -

    I played with Mac Brown's face shapes this weekend. I'm resending the

    most difficult loop shape photo I've ever seen. I'd love to have

    someone tell me how to do this one. A 12 - 15 foot square loop.

    (Brilliant wrist control and timing which I've never mastered.)

    In recreating Mac's, first, assumptions.

    1. No hauls in A. B, or C. I had to haul for Loop D. Others were

    achieved with rod hand and line tucked under index finger (although some

    were easier to reproduce with hauls involved).

    2. Strong loop formation skills in all. Proper acceleration, rod

    direction and planes.

    3. These are full parallel loop legs (since we have no angle of

    perspective).

    That said. These are, to the best of my language, how I produced the

    following:

    Loop A. Two ways. Either, 1) Tip drops from fly leg (line of cast),

    stops well and is fully damped. Minimal, controlled or no counterflex

    (can't tell) and no tip motion toward or away from, or perpendicular to,

    unrolling loop; or, 2) Rod tip stops, primary counterflex and recoil

    occur, but line mass and directed energy pull loop into parallel legs,

    straightening out the loop in to thin parallel legs.

    Loop B. - Slightly abrupt, abbreviated initial stop, then immediate

    slight forward thrust or perpendicular tip rotation slightly slower than

    forward moving loop to essentially a second final 'stop inches below the

    first and forward soft forward follow through

    Loop C. - Abbreviated initial stop, the slight recall of tip to a second

    stop. This made in slightly climbing loop. reproduceable in mid-length

    but not longer loops ( 85+ feet)

    Loop D - While mac doesn't show this, I recreated this in a climbing

    loop only in longer casts by stopping the rod tip in an (say) a 5 degree

    upward incline, then dropping the rod tip off the line of the cast, then

    pulling the tip opposite the unrolling cast, then creating a sharp short

    final stop. That doesn't sound exactly right, but I can't describe it

    better.

    Surely others have played with recreating these loops. Love to see how

    they got them, or better explanations. But there you have my attempts.

    David

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    David ....  As I try to make various loop shapes, I really can't see them well enough because I'm the caster standing necessarily behind the loop ..... so I rely on my casting buddies to correct my opinion on what I think I'm seeing.  Sure, I can  tell if my loop is small or large, tail or no and I can see a point or a blunt end; just that I can't appreciate the details of shape for the smaller loops.

    So much depends upon the point of view of the observer.

    When standing to the side as an observer, sometimes a needle sharp loop made with the caster using an off horizontal casting plane will appear rounded and larger with an off vertical loop plane to the observer standing behind .  Sometimes even wider if we look at that loop (as I often do) from the elevated balcony of my home or that of my neighbor ( stilt houses because of hurricanes, 16' above ground + my eye height).

    When Tom White videoed some of our loops from the side, they often appeared a lot different than they had to the caster.

    This is one reason that the MCCI Testing Committee came up with the recommendation that the candidate should cast in a manner which would allow the students or class to clearly see the loops.  That led to a heated discussion over whether or not we were dictating casting style.

    Lately, I've been judging an MCCI candidate's loops with one examiner looking from the side and another from in back or well in front of the caster.  I still do that even when the candidate has chosen to cast in a vertical casting plane so I don't miss a loop which looks fine from the side, but is wide laterally or curving behind the caster on the back cast.

    I'm not saying you didn't really make the loop shapes you discuss .....I'm sure you did..... only that I don't know how you viewed them.  Your stated methods of making them make sense, though.

    I scratched my head over your picture of the "Big Bad Loop".  I noted the angle of view... off to the side and partly behind the caster.  I looked at the residual bend of the rod, too.  All this made me wonder if this loop isn't a very wide one with fairly parallel loop legs in at least one plane.  Rather than being square as it appears from the vantage point of the photographer, perhaps it is curved around a bit behind the caster and might appear rounded to an observer standing from the side. (?????)

    Neat stuff !!!

    Gordy

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    From Paul Arden,

    Hi Gordy,

    I used to see loop B a lot in the UK. The first I came across it in print was by a chap called Herb Spannagl (possibly NZ's finest caster - he's written over 100 casting articles, and that was 8 years ago. He popularised the "Tongariro Roll"). Super guy, great caster, you'd really get on well. He called loop B the "Rat's Snout".

    I thought about this a lot and the way to form B is to curve the tip path, using a high trajectory backcast and tilt the rotation so that you are casting from just past the perpendicular to close to the horizontal. Using a clockface example it would be 12.30 -10. This is the traditional English style of casting, as taught by the late Peter MacKenzie-Philps in his book "Flycasting Handbook". Which is an interesting read. Very much outdated in many ways, but if you have a regimented caster (merchant banker, London laywer, army sergeant as sweeping examples) it certainly works.

    No wrist, rotate through the stroke, cast from 12.30 to 10.

    Cheers and thanks,

    Paul=

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    Paul...   Your wording suggests that you were observing loops which others had made from one side.  That is one of the  best way, I think, to determine loop shapes.

    Your high trajectory back cast and rotational tilt (line plane high in back/low front trajectory) sounds a bit like Charles Ritz' "HL/HS' cast. *

    Hopefully you are better than I am at checking out the details of your own loop shapes.

    * A FLY FISHER'S LIFE by Charles Ritz, pp. 38-46.

    Gordy

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    From Mac Brown.  He answers Bill Kiester and me re our messages from yesterday.  He also refers to the Phillips/Mossler and Spolek references from my note.    G. :

    Hi Gordy,

    Thanks for the comments Bill! A buddy of mine in Cumbria named Lee Cummings uses a term which I really like for observing various loop shapes. He says, "lets have a look at it with our tension glasses". I think the "tension glasses" can answer most about loop faces in/out of balance of fly/rod leg. If we apply the six step method for these shapes-it works like a charm.

    The way we alter the shape of the loop face is through varying the tension. I will explain it in detail for the 4 shapes once we have some more feedback. As a hint, the tension is usually greatest in the upper quadrant of the loop face (fly leg) and the other remains back at the rod tip top. Higher velocity loop face=greater overall tension. I am sure we will do these 4 at the SE FFF clave in Helen on the education day. Another term, which I think is valuable looking at various loop faces, is the term loop morph (I think Tim Rajeff was first guy I heard use this term in the mid 90's when we would discuss such topics). All loops change (morph) during propagation of the unrolling line. These various shapes play a large role in control of various fishing casts, depending on what we are trying to accomplish.

    Gordy, some good resources listed below! Many gems out there during the last 20 years! Since Bill was the brave one thus far (applause!) -he was also on to the correct answer in his last paragraph (force and tip top tension). Perhaps it would be better for the group to list the 4 drawings from greatest tension to least for the loop faces drawn? The discussion can follow after that (we will answer your question then Gordy). How about the one for the greatest distance from what we know in the drawings? The important part of the drawings is more to get folks out there casting the 4 shapes-then the picture will become very clear. I would be curious to see how the casting analyzer interprets these 4 casts (maybe this summer in Montana)!


     Take care, Mac

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    Mac ...  Thanks.  I never thought about it from a standpoint of tension.  I'll remember that.  I, also, heard the term "morph" as applied to changing loops from Tim Rajeff.    G.

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                                                                      PARABOLIC RODS,  MORE

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    From Troy Miller :

    Thanks Gordy.  I don?t know how to describe it any simpler or clearer?

     

    I?ve observed through attending many bamboo rodmakers gatherings that the strong parabolic examples which are offered up on the rod racks for public consumption tend to be the least favored rods at the event.  The only people who really seem to appreciate them are those who fish parabolics only.  It takes them considerably less time to dial in the energy balance at different ranges, than for the average proficient caster.  The rods MUST be allowed to work with just a humble nudge from the caster.  In a battle of wills, the parabolic will beat an aggressive caster every time. 

     

    I recall spending an entire afternoon carrying on a heated debate with a certain original Pezon et Michel cane rod, inspired by Charles Ritz.  It was making a fool of me, calling me names, and generally discouraging me.  After 90 minutes or more of working myself into a foamy froth, I finally sat down for a break.  Hanging my head, I started just stroking the P&M back and forth without line out.  When I used a gentle stroke, it behaved.  When I punched it a little bit, it jumped in rebellion.  All this with no line, mind you.  The light went on.  If the rod acts like this when asked to self-load, then it does the same with line load ? in spades.  I strung it back up and within 3 minutes, figured out how to allow that rod to make the loops it wanted to get out.  Parabolics have a life of their own, not found in other rod tapers.  While I admire their individualism, I still don?t prefer them.  I want to be in control, from the second stroke on?  J

     

    Parabolic rods are hard-headed.  They won?t compromise.  They will NOT meet in the middle.  It?s their way or the highway.

     

    Anyways, that?s just my take on them?

    Regards,
    Troy Miller

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    Troy...  You had the patience to figure out that Pezon et Michel rod.  I tried one and never did figure it out.

    Gordy

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    Words of sentement on parabolic rods from Liam Duffy :

    Hi Gordy,
                 The discussion on parabolic rods reminds of an incident I was involved in many years ago, we (as FFF Masters ) were given a rod with "parabolic" action.  After much testing and discussion we came to the conclusion that the rod we were testing was not so much "parabolic" but "diabolic" as one of the group succintly put it!!

    Best Regards,
    Liam Duffy

    P.S. First round at the Conclave is on you

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    Liam ...  Bring your devilish parabola and we then may need several rounds !

    G.


     

     

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