Wednesday, May 5, 2021

Synthetic Rope Repair

 

Thank you for purchasing the synthetic rope repair kit!  Below are a few videos that are a great reference for repairing damaged synthetic rope or even creating a length of rope with an eye on each end.  They are not my YouTube videos.  These methods can be done in the field if you have everything necessary.  I recommend adding them all to the canvas bag to keep everything together. 

You will need:

  • ·         A Sharpie or similar marker
  • ·         Scissors or a sharp knife
  • ·         Electrical tape or similar
  • ·         FID, needle, and whipping twine
  • ·         Optional:  Tube Thimble

o   For 3/8  - https://www.amazon.com/Stainless-Thimble-Synthetic-Ultranger-Diameter/dp/B06XT5KDS2

o   For 5/16, 1/4, 3/16 - https://www.amazon.com/Ranger-Stainless-Steel-Thimble-Synthetic/dp/B06XSVLS9W

Dyneema Eye Splice Demonstration:  https://www.youtube.com/watch?v=VDQ28yUs7AA

Dyneema Lock Stitch Demonstration:  https://www.youtube.com/watch?v=tKqAfBfNc3A

Link to my 5/16 synthetic rope repair kit: 
https://poconos.craigslist.org/for/d/saylorsburg-synthetic-rope-repair-kit-16/7317715663.html

Link to my 3/8 synthetic rope repair kit:  https://poconos.craigslist.org/for/d/saylorsburg-synthetic-rope-repair-kit-8/7317717720.html

Eye Splice Procedure

Measure one fid length from the end.  This will become the taper.  Mark a line with a sharpie. 

Measure another two fid lengths from that mark and make another mark (but two lines this time).  This will be the end of the tail.

Mark two is also the beginning point of the eye.

A 50% reduction of a 12-strand rope means we need to remove 6 of the strands.

Mark a V, skip one, mark next V, then skip one, Mark the last V.  These three marks will be for 6 strands.  The skipping allows the rope to slope or gradually step down.

Once you have your marks, start with the strand closest to the end.  use the hollow end of the fit to lift up the marked strand.  You will see where the strand is 'indented' from the braid.  That is where you want to make the cut.

Make the cut, then move to the next strand until all 6 marks are cut.  Pull out the length of the strands that were cut. 

Once you have all six out, they can be discarded.

Unbraid the last 2 inches, then cut a gentle taper to the end of the rope.

Take some electrical tape and tape the end of the rope.  this should bring it to a point.  No more than two wraps. 

Insert the point of the tape into the end of the fid and tape it there.

Measure 4 fid lengths from the double mark.  Then mark the entire diameter of the rope, all the way around.

The "Bury" is about one V above the double mark. Take the rope and birdcage it so you can work the fid into the core of the rope.

This works just like a Chinese finger toy.  Keep working the fid through the core of the rope.  Make sure the fid stays in the center and the point doesn’t catch any strands.

As you birdcage, you'll feel the fid keep moving through the core of the rope.  Then hold the front of the fid and pull the rope towards the back.  This will keep moving it through.

When you get to the exit point, bring the fid out. 

Now double check the eye - make sure its tight and work the rope to get it where you want it.

Remove the fid from the tail, and remove the tape from the tail.  Make sure all the tape is removed - this is important.

Hold the eye and milk the birdcage all the way down the rope.  You'll see the tail get sucked up inside. 

Do this a few times.  You should notice a good taper going down the rope.

Lock Stitch

to prevent the bury from moving out of the center of the rope, you'll need a lock stitch. 

take a little bit more than an arm's lengh of thread.

keep a few inches of the end of the thread free

Use a figure 8 stopper knot.  Make a loop, then twist the loop once, then take the end and put it through the loop.  Pull softly to make the knot.  Dont pull too tight as you want it to have some bulk to it.

Take the other end and thread the needle.  Pull about five inches through.

The first pass through should be one to 2 strands down from the bury.  As you pass the needle through, bunch up the rope so that the knot doesnt pull through.

The goal is to make three passes through the rope, skipping one strand every pass.  Then rotate the rope 90 degrees and make another three passes the same way heading back towards the eye.  Again, each pass will skip one strand.

Once that is done, you can remove the needle.

Take the tail of the thread after the knot and make a loop down the length of the rope, and have the tail towards the top of the eye of the rope.  This will help in chinching up the loose end after we wrap the rope with the thread.

Take the length of thread and wrap the rope, keeping it tight.  You need to make at least 8 passes minimum.  More if you like. 

Keep each pass tight against the previous, making sure they do not overlap.  Once you are done with that, pass the end of the thread through the loop.

Now you are going to pull the thread by the eye (the other end of the loop) until you pull the loose end under the wrapping. 

You will see the bunch going under the wrapping.  Once it is about half way, grab both ends of the thread and pull it tight, lockign it in.

Trim the ends and that is it!