BIG FURLED LEADER FORMULA
I created the Big Furled Leader Formula, after about 4 years of working on the mathematical formula, and then I gave it to the world for free use by all the people who make their own furled leaders. So if you want to created a furled leader that has a loop sequence of 13?-12?-11?. That gives you total thread count for the combined thread segments sequence count would be 26-24-22-20-18.
Ron:
I realized did a major typo, on the article
Each Run (Left & Right) have a loop sequence of13?-12?-11? that is correct.
That gives each Run a thread count of 27-25-23 which gives the total thread count combining the Left and Right Runs
54
52
50
48
46
I will correct the mistakes and send your the corrected copy... to replace this one with errors
I have been tired and trying to do too much with saving FAOL Articles as pdf. and running the Beginner's Only Swap...
I have not done any furled leader in the past 5 months, so I apoligize for this major error...
~Parnelli
I created the Big Furled Leader Formula, after about 4 years
of working on the mathematical formula, and then I gave it to the
world for free use by all the people who make their own furled
leaders. So if you want to created a furled leader that has a loop
sequence of 13?-12?-11?. That gives you total thread count for
the combined thread segments sequence count would be 54-52-50-
48-46.
I use a two line method, I know most of you use the V shaped
layout that Kathy Scott shows on her DVD Video, but that gets a
little to complicated for my furling. One plus for my method is I
can always delete a peg position (eliminating the last segment) at
the tippet end for a more stout furled leader/tippet combo. I also
can start and end my loop wraps on the inside pegs for a different
loop sequence of 13-12?-11.
I have a lot more options in creation of my furled leader
designs. I mostly use Mercerized Cotton Thread for my furled
leaders, it is very strong thread, and not that expensive, available
lots of different colors and shades. Tag ends at the start and finish
are secured to the outside pegs. I can also secure them to the inside
pegs then it would be a 13-12?-11 sequence lot of other options
using the two run system.
I furl each side separately reducing the board length by 10%
for the left and right runs tacking the small ends to the board. I
then transfer the left run on top of the right run, to start the
unfurling process.
I add super glue to the loops at the top and bottom before I
do the shorb loop for final end connections. For the shorb loops I
use a Knit Picker (they have them at Jo Ann's Fabric and Michaels
they only cost about $2.
Example: 13?-12?-11? loop sequence
PERCENTAGES:
L0 & R0 = 0
L1 = 100% = 1.000
R1 = 1.000 x 0.55 x 54/52 = 0.571
L2 = 0.596 x 0.55 x 52/50 = 0.327
R2 = 0.358 x 0.55 x 50/48 = 0.187
L3/R3 = 0.217 x 0.55 x 48/46 = 0.107
Total Percentage 2.192
Finished Length 72 inches
10% of Finish Length added to formula for length lost in
furling process
72 inches + 7.2 inches = 79. 2inches (79 inches)
1.000/2.192 = L1/79.2 inches so L1 = 36.1 inches round
down to 36 inches.
PEG POSITIONS
L1 = 36.1 inches
R1 = 36.1 inches x 0.571 = 20.61 inches
L2 = 36.1 inches x 0.327 = 11.80 inches
R2 = 36.1 inches x 0.187 = 6.76 inches
C3 = 36.1 inches x 0.107 = 3.86 inches
Peg Positions
L & R Pegs 0"
L Peg 36"
R Peg 57"
L Peg 69"
R Peg 75"
C Peg 79"
You can use that Percentage Sequence for whatever length of
furled lead you wish that has that loop sequence. So half the work
is already done. You can use that percentage for different lengths
of finished furled leaders using that loop sequence/thread count
Once I have done the shorb loop, I like to dip my furled
leaders in some warmed lacquer, to help the thread to bind giving
the furled leader a backbone when casting.
I hang them up to dry, and before they are fully cured I use a
damp rag with some lacquer to smooth the exterior of the furled
leader to remove any lacquer build up….
I don't use spread sheets, I just do my two part calculations
Percentage base of the first length, and then add the 10% to the
desired length to compensate for the loss due to the furling
process. The finish furled leader should be within +/- 0.1 inch of the desired length…~Parnelli
Again my apoligies for the flawed articles, I have had too many pans in the fire this week...
I do use spreadsheets, here you can download a spreadsheet of Steves formula http://dl.dropbox.com/u/1418258/BFLF.xls I mostly use it for the V-setup. Like Steves formula, feel free to use it, and of course comment on it.
Karel
WOW!! I am impressed with the work that went into this. But What Ever For!!??
First wanted to build an atomic bomb in my back yard, but my wife wouldn't let me. So i choose to build furled leaders with a hint of science to it. Or more seriously, the aim of this whole thing is to get leaders which behave similar for different lengths, line weights etc. Don't know if the aim is reached, but it was fun pursuing it.
Karel
Jack,
I guess I'm with you, but if someone finds it to be fun then I say go for it. I have built leaders from scratch but the furled leader thing seems way to complicated for me.
The Chronicler
Parnelli:
Could you provide either drawings or photos Of your 'board'? I have been making furled leaders for about for years now, after Skip Shorb showed me his board and how to do it. Regrettably, I am thoroughly stumped on your procedure.
With respect to a spreadsheet, it will do for you, with just a few clicks of the mouse, what a calculator takes much more time to do.
The info on the Mercerized Cotton Thread is very interesting. Does it not rot rather rapidly if the lacquer finish gets cracked, and water gets in to it?
Cheers!
Just a short note to say "THANK YOU!" to Ron Tidd, who inserted the corrected version of my article....
I also want to say that Ron's work on the FAOL site, is greatly appreciated.... ~Parnelli