Two into one.
I bought the 2.5mm dyneema for a special winch/pulley project which needs to pull two sides of a cradle exactly simultaneously for about a meter. Originally I was going to create loops on both the LHS and the RHS, then loop them together onto a 3mm dyneema rope. This gave me two issues : firstly the "knot" would be large and may rub on the cradle (not much room available), secondly there was no redundancy if the 3mm dyneema was to fail. So I then looked at splitting the drum on the winch into 2 halves so I could wind on both the RHS and LHS 2.5mm ropes on together. This would give redundancy if one leg was to fail but it would not guarantee simultaneous pulling.
Then I had a brainwave. I spliced the 2 x 2.5mm together and then fed a 1.5meter tail through the middle creating a combined rope of approx 3.5mm diameter. I then wound this onto the drum of the winch as a single rope. This would ensure simultaneous pulling, and also provide redundancy if say the outer sheath was abraded and failed - also there was no significant "knot" so it fitted in neatly in the space available.
It was a bit of a fiddle pulling the tail through but not really difficult with the D-splicing tool.
All in all, I am very impressed with the dyneema and I am glad I did not choose a wire rope for this application.
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