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  • Loop / Leader analysis 3





    Walter & Group....


    [GH]  Some of you failed to receive the second photo from Jeff Wagner.  I'll include it with my next message as an attachment.



    [GH]  Guy Manning responds to the first (backcast photo) of Jeff Wagner's caster :

    I am seeing only a back cast photo.
     
    1.)  - what are the distinct shapes you notice about the loop and leader? The leader appears to be level, I see no indication of tapering, though it may just not show up.
     
    2.)  - where is the leader? It appears to be hanging vertically from the tip of the fly line.
     
    3.)  - what could cause this loop shape? The caster has an excellent straight line path as indicated by the flat  upper leg. The caster has a great stop as indicated by the flat  lower leg. The angle created between the upper and lower legs is created by using slightly more arc than is necessary. If the tip had stopped a bit sooner the angle between the legs would be smaller or non-existent.
     
    4.)  - is the rod position appropriate?  It could be higher and it could be lower. That depends on the casters style. 170/BB casters would say it is too high but their loop shapes would be different. To lose the angle between the upper and lower legs, the caster could stop the rod a bit sooner/tip higher. But  all in all it probably works fine for the caster and I don’t think a new stopping position will have any  major effect on the cast.. If anything it would force him to wait a bit longer for the line to drop into the right plane for the forward delivery trajectory.
     
    5.)  - could the loop be improved and if so, how?  See #4
     
    6.)  - what do you believe would be the end result of this back cast and the next forward cast which was the delivery? Depending on the deliver, a cast in excess of 110 feet. And possibly as much as 125 to 130. The leader, having such small mass, will not likely have any effect on the fly line affecting the outcome..
     
    Guy Manning

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    [GH] From Peter Morse :

    Gordy and group, 

    I would say that either the leader has clipped the ground or he's hauled very hard and very early, regardless the rod tip has been snapped down at the very start of his backcast.

    Here is a similar shape. This guy is actually a long term student of mine and has become very competent caster (see the second pic for evidence). Unbeknown to him his fly was clipping a very small bush on a rock shelf behind him, this was causing the rod tip to dip very suddenly as he began his forward cast. The waves in the line are I believe a consequence of the shock but also of him attempting to recover. That shape in the end of the line and the leader is caused by that initial sharp dip. Aitor Coteron has some outstanding slo-mo video of this effect caused by a sudden and VERY sharp early haul.

    Peter Morse

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    [GH]  From Gary Davison :

    Gordy and group, 

    I would say that either the leader has clipped the ground or he's hauled very hard and very early, regardless the rod tip has been snapped down at the very start of his backcast.

    Here is a similar shape. This guy is actually a long term student of mine and has become very competent caster (see the second pic for evidence). Unbeknown to him his fly was clipping a very small bush on a rock shelf behind him, this was causing the rod tip to dip very suddenly as he began his forward cast. The waves in the line are I believe a consequence of the shock but also of him attempting to recover. That shape in the end of the line and the leader is caused by that initial sharp dip. Aitor Coteron has some outstanding slo-mo video of this effect caused by a sudden and VERY sharp early haul.

    Peter Morse

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~





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