Originally Posted by Renoirpierre
Thanks for the replies SWL and StuM.
Other than watching the eye sizes, are there any downsides to the "improved" design over the better, BB, or strong?
Not that I am aware of. The stopper does look a bit clunky, but beauty is in the eye of the beholder
. The larger than usual stopper knot may actually be advantageous at times.
Care must be taken with the construction of all soft shackles to gain maximum strength. I think the above design contains, if anything, fewer opportunities to make errors. It is relatively easy to make if rope
work skills are not high.
When making these here are a few tips from me to help maximise potential strength:
- Make sure the main eye at the end (that secures the shackle closed) is not a noose. Personally, I would make this large enough to hold 6-8 x the dimeter of the line (4 lots of line will actually be passing through it, as the tails are buried in that segment).
- Secure the eye size with tape while working so that it does not shift inadvertently.
- Ensure the two legs are absolutely an identical length when the bury is completed before the knot is tied. If they are not, when the knot is tensioned the size of the main eye could alter.
- Don’t twist the line during construction.
- Use the usual techniques to tension the finished shackle carefully by hand, then pretension under load (eg using a winch) and leave to sit for 20-30 minutes with the load applied. Strength can diminish significantly if shock loads are applied before this is done.
Edited to add:
After the main eye is formed and secured with tape, trim the ends so that the length of the two legs is identical. Although any excess will be buried, the difference in bury length will alter the final length of the leg as the outer portion bunches up when filled. By far the easiest way to avoid this is to initially trim.
Have fun making these.