While it is not so important due to the small amount of fibre stretch, polyester braids should also be spliced rather than knotted.ĥ. For double braids, it is best use a double braid UHMWPE eye splice.Ĥ. For single braids, it is best to use a Brummel splice with a long tapered tail (at least 400mm long is necessary). Most braiding companies quote the cyclic test as their claimed strength.ģ. In the test standards, there are different tests – a cyclic test and a straight break test. Typically, on an 8mm winch rope, the increase in strength with use may be as high as 800kg.Ģ.
UHMWPE (Ultra High Molecular Weight Polyethylene) ropes get stronger as they are used up to a point (after some years of use) where they start to deteriorate. Much of this information we already know but the refinement gained has been great and we feel some of this should be shared with our customers because of the immense importance.ġ. There has been much knowledge gained as we can liberally test all our ropes. Nautilus Braids has installed a high spec strength tester for testing ropes up to 14 tonnes. The Importance of Splicing – especially for braids made with UHMWPE Fibre The centre of the rope and tapered to make a superior splice. Is particularly effective as both the centre and the outer can be fed back down Nautilus Braids has the ability to carry out machine splicing when the The tail is then tucked into the centre to finish the splice. The tail and main rope are interlinked through each other to make a simple high Single braids in all materials are best to use a Brummel splice where
Or ropes that have a centre that carries most of the total load. This is not acceptable for UHMWPE, Dyneema® fibre, Spectra and Vectran ropes Polyester splice where the outer cover is fed back down the braided centre. Polyester and Nylon double braids should be spliced using a standard Use the most appropriate splice for the application. However, different braided ropes made out of different materials should This is because knots have a very high centre of curvature when the rope wraps around the same rope in a knot. Knots lower the strength of all ropes by at least 50%. The Importance of Splicing rather than using a
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