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  1. #11
    Join Date
    Aug 2011
    Location
    Preston, Lancashire
    Posts
    468

    Default Re: Double grinner or uni knot

    The grinner knot and the uni knot are different knots the grinner has six turns up the line then a loop is formed and six turns back up, although four turns each way with modern nylons is fine.
    One of the problems is that most fishing books get it wrong and so it continues, although if you look on Youtube the correct grinner is shown.
    Having said that the uni is an excellent knot and is actually a variation with less turns of a hangman's noose and has been known as the gallows knot in the past and some forty or so years ago was renamed the Duncan's loop.
    The Grinner was invented by Dick walker in I think the 1950's and was named after his grandson whose nickname was 'Grinner'.

    Johnclayton

  2. #12

    Default Re: Double grinner or uni knot

    Correct Duncan Loop:
    There are many web-sites that describe and illustrate a fishing knot that is variously known as a Duncan Loop, Uni-Knot or Grinner.
    In Geoff Wilson's “Complete Book of Fishing Knots & Rigs” the illustration of the “Duncan Loop” is shown improperly since the initial loop is formed on the standing line side of the hook eye.
    This improper illustration of the Duncan loop is a non-slip loop that does not have similar strength as the Duncan loop and to my knowledge has no name.
    When the initial loop is formed in the tag end portion of the line after passing through the hook eye it can form a proper Duncan Loop.
    The illustration immediately below labeled “Uni-Knot” is a proper illustration of the Duncan Loop although the snugging and final setting are not shown. The Uni-Knot is a later renamed copy of the original Duncan Loop.
    If pulled down and set properly the final configuration of the Duncan Loop, Uni-Knot or Grinner are all the same.

    I believe that some of the confusion lies in the manner of which these knots are pulled down after the last wrap with the tag end is passed through the initial loop. In my knot and the Uni the tag end is pulled in the same direction as the standing line with sufficient force to allow the wraps to wind back over themselves to form a neat spiral over the standing and tag lines like a nail knot tied back over on the line itself. If this is not done the knot will not fold over and therefore form knots that differ in their final configuration and strength.

  3. #13
    Join Date
    Feb 2009
    Location
    Scotland
    Posts
    3,245

    Default Re: Double grinner or uni knot

    I agree with mot... higher diameter can take less turns, I always use three on heavier and 4 turns on lighter nylon.
    Tied like the illustration I leave the forward facing tag end as my dropper.
    If you use the hook to draw the knot up it will give you a pig tail.
    Pull the knot tight away from the hook using the tag end then slide the knot down to the eye and give it its final tighten and it won't pigtail.

    Al

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