Samson DOUBLE BRAID Class I User Manual

SAMSON SPLICING INSTRUCTIONS
Double Braid Class I End-For-End Splice
Class I Double Braids are made from any or all of the following
bers: olen, polyester, or nylon.
This splice can be performed on new and used rope. This is an all-purpose splice technique designed for people who generally splice used rope as frequently as new rope.
MEASURING AND MARKING
Tape the end of each rope with 1 thin layer of tape. Lay 2 ropes to be spliced side-by-side and measure 1 tubular d length (or 2 wire d lengths) from end of each rope and make a mark. This is Point R (Reference).
step
1
From Point R measure 1 short d section length (as scribed on the d) then mark. This is Point X (where you should extract core from inside cover.) Be sure both ropes are identically marked. Tie a slipknot approximately 5 d lengths from Point X.
Note: If you require the rope with the nished splice to be a certain overall ength, refer to “Special Tips for Splicing Double Braid Class I”, on th last page of these splice instructions.
EXTRACTING THE CORE
step
2
Bend rope sharply at Point X. With a pusher or any sharp tool, such as an ice pick, awl, or marlin spike, spread cover strands to expose core. First pry, then pull core completely out of cover (shown in white) from Point X to the end of rope. Put 1 layer only of tape on end of core (shown in gray.)
To assure correct positioning of Mark 1 do the following: holding the exposed core, slide cover as far back towards the
tightly tied slip knot as you can. Then, rmly smooth cover back from the slip knot towards taped end. Smooth again until
all cover slack is removed. Then, mark core where it comes out of cover. This is Mark 1. Do this to both ropes. (Fig. A)
Figure A
X
X R
Tie a slipknot in each line about 5 fid lengths from Point X.
X
Finished splice
Short
section
of fid
R
Core must be extracted from cover here.
R
1 fid OR
2 wire fids
1 layer of
tape
cover
Mark 1
X
X
Do not pull cover strands away from rope as this will distort cover unnecessarily.
INSERTING CORE INTO CORE
step
3
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Hold 1 core at Mark 1 and slide cover back to expose more core. (Fig. B)
From Mark 1, measure along
3A
core towards X a distance equal to the short section
of d and make 2 heavy
marks. This is Mark 2.
3B
From Mark 2 measure in the
same direction 1 d length
plus another short section and make 3 heavy marks. This is Mark 3.
Mark second core by laying it alongside
the rst and using it as an exact guide.
X
Mark 3
X
R
1 fid length plus another short section
Mark second core using first as exact guide
R
R
cover
core
core
cover
core
core
cover
One layer of tape
Figure B
Short section
Mark 1
Mark 2
PAGE 1 OF 4
SAMSON SPLICING INSTRUCTIONS
Mark 2
Mark 3
Mark 1
X
X
Mark 3
Mark 1
Double Braid Class I End-For-End Splice
step
4
step
5
MARKING THE COVER FOR TAPERING
Note nature of the cover braid. It is made up of strands. By inspection you can see that half the strands revolve to the right around the rope and half revolve to the left.
Beginning at Point R and working toward the taped end of cover, count 8 consecutive pairs of cover strands that revolve to the right (or left). Mark the 8th pair. This is Point T, which should go completely around cover.
Starting at Point T and working toward the cover’s taped end, count and mark every second right and left pair
of strands for a total of 6. Then, on the other rope starting at Point T, count and mark every second right and left pair of strands for a total of 6. Make both ropes identical.
Right pair
Marking cover strands
R T
Read instruc­tions Carefully
Left pair
X
Mark 3
X
R T
R T
cover
core core
cover
Mark 2
PERFORMING THE TAPER
Bring cover-tail down on side of rope (minimum 2 times rope circumference in inches) and lock stitch (or tape) excess cover to rope. After lock stitching, excess cover should be whipped to the neck of the rope with appropriate
whipping twine. Start whipping at
the throat of the eye moving toward tail using Whipping Method 2.
Mark 1
Mark 3
R
T
Tapered cover
core
RT
core
Mark 2
Figure D
Mark 1
REPOSITIONING THE ROPES
Reposition ropes for splicing according
6
step
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to Fig. D. Note how the cover of one rope has been paired off with core of the opposite line. Avoid twisting.
Figure C
Cutting pairs
X
X
R T
R
T
Removing cut pairs
Tapered cover
core core
Tapered cover
Mark 2
Mark 2
PAGE 2 OF 4
SAMSON SPLICING INSTRUCTIONS
X
R
T
Mark 1
Mark 2
Mark 3
Mark 2
Mark 3
Mark 1
Mark 2
T
Double Braid Class I End-For-End Splice
step
7
step
8
step
9
PUTTING THE COVER INSIDE CORE
Insert d into rst core core (shown in gray) at Mark 2 and
bring it out at Mark 3. Add extra tape to tapered cover (shown
in white) end then jam it tightly into hollow end of d. Hold
core lightly at Mark 3, place pusher point into taped end
pushing d and cover in it from Mark 2 and out at Mark 3. (When using wire d, attach d to cover.) Then pull d through
from Mark 2 to Mark 3. Pull cover tail through core until Point T on cover meets Mark 2 on core. Insert other cover into core in same manner (Fig. E).
REINSERTING THE CORE INTO THE COVER
Now put core back into cover from Point T to Point X. Insert d at Point T, jam taped core tightly into end of d (Fig. F). With pusher, push d and core through cover bringing out at Point X. When using wire d attach d to taped core. Then pull d and braid through from Point T to Point X. Do this to both cores. Remove tape from end of
cover. Bring crossover up tight by pulling on core tail and tapered covered tail. Hold crossover tightly, smoothing out all excess braid away from crossover in each direction. Trim end of tapered cover at an angle to eliminate blunt end. Tapered cover tail will disappear into core at Mark 3. Cut core tail off close to Point X at an angle.
Fid and end
of core comes
out at X
BURYING THE EXPOSED CORE
Hold rope at slipknot and with other hand milk
cover toward the splice, gently at rst, and then more rmly. The cover will slide over
Mark 3, Mark 2 the crossover and Point
R. Repeat on the other side of the splice.
Continue burying until all cover slack between the knot and the splice has been removed.
Beginning at each slipknot, milk
cover by sliding hand toward splice
X
Figure E
X
Tapered cover
T
R
Figure F
Insert core into cover at T
R
End of taper disappears here
core
T
X
R
core
cover
core
core
tapered cover
crossover
Pinch taped end to insert
into fid
core
cover
R
T
core
core
X
Opening in crossover should be no larger than diameter of rope.
FINISHING THE SPLICE
10
step
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The splice is nished when all cover
slack has been removed and there is an opening in the splice approximately equal in length to the diameter of rope. If, at the opening, one side of the splice is noticeably longer than the other side, something is wrong. Check
Steps 1–9 and remake if necessary.
Now untie the slip knots.
End of buried section
Continue “milking” to remove all cover slack
Crossover point buried
to approximately here
End of buried section
PAGE 3 OF 4
SAMSON SPLICING INSTRUCTIONS
5 fids
Special Tips for Splicing Double Braid Class I
SPLICE WITH THIMBLE
Follow Step 1 of the Eye Splice Double Braid Class I for determining the correct eye size. When burying exposed core, as in Step 8, bury to crossover, then insert thimble into eye before milking cover all the way. If using a thimble with ears, before inserting cover into core, as in Step
5, insert core through the rings (dog ears) and slide thimble beyond Mark 3. Proceed to make the splice according to instructions.
Note: Before nal burying, slide thimble around to cover side of eye. To secure nished eye tightly around thimble, either whip throat or dip the eye in hot water for several minutes. Hot water will shrink the eye tightly around thimble for nylon and polyester ber ropes.
SPLICING ROPES 3" DIAMETER OR LARGER
Before splicing rope, measure back 8 ds and insert a large d through the rope to anchor the core and cover together. Use a milking strap to milk slack of cover toward end of rope. A milking strap is a smaller diameter rope that is cinched around the rope to create more seizing power
than a human hand can apply. It helps to pull the milking strap with mechanical means (a winch or come-along.) Cut off any excess cover.
Milking the cover is a crucial step and will be done several times during this splice. The milking process aligns the core and cover braid angles and allows them to more effectively share the load when the rope is in use. It is best done with a milking strap for ropes 3" diameter or larger
After milking, check for cover slack. If cover slack remains, repeat milking process until slack is gone.
MINIMUM LENGTHS
Minimum eye-and-eye sling length with Class I Double Braid is 5
d lengths from extraction Mark X to extraction Mark X, regardless of rope diameter. The size of eye does not affect the minimum
length. Proceed to make the eye splice as per instructions.
Mark X
Mark R
END-FOR-END SPLICE
Minimum endless loop (Grommet) with Class I Double Braid is
10 d lengths between extraction Mark X to extraction Mark X,
regardless of rope diameter. Proceed with the Class I Double Braid End-for-End splicing instructions.
Mark X
Mark R
Mark X
Mark X
Example: How to make an Eye-and-Eye Sling 10' long overall with two 6" eyes:
10 ft.
6"
Measure and cut a length:
1 Eye
10 ft.
Circ. 3 fids
Then start with Step 1 of Class 1 Double Braid splice.
Exact overall lengths with endless loops are determined by allowing for extra rope consumed in making the End-for-End Splice. The length of extra rope is equal to 4 fid lengths.
Example: To make an endless loop 10' overall:
10 Ft.
Measure and cut a length:
20 Ft.
6"
4 fids
Then start with Step 1 of the End-for-End Double Braid Class I Splice instruction.
DOCUMENT Double_Braid_C1_End_for_End.pdf
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© 2012 Samson Rope Technologies, Inc. All rights reserved. S/WD #108294 7/2012
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