New standing rigging option

[vyv_cox]

Many years ago we owned a boat that had non-metallic guard wires, plastic coated laid synthetic fibres. The terminals on these contained cones, design somewhat similar to Sta-loc. I guess something like these might work with linear fibre Dyneema?

 

[Neeves]

My detailed knowledge - and therefore understanding - of the 'how' is limited to what I can see from several online promo clips posted by Colligo Marine. Roberto^ above and some others have grasped the concept. It seems the terminals are set up first, with 'bearing points' distanced exactly as specified, then the continuous monofilament line is applied, looped around 100-200-300 times as required. Then the PU coverings are applied over the multiple parallel strands. Quite how the ends of the continuous line are secured is not known. Perhaps a knot, or a dab of glue. Perhaps it doesn't matter.

It seems unlikely that this process lends itself to DIY construction. While it IS possible to make eye-splices in lines with a parallel fibre core, it is far from easy and the results are unlikely to achieve all the elevated Break Load one might hope for, from the material's spec.

I would expect DIY construction of one's new dyneema shrouds, etc., to rely on single-braid dyneema, where heat-treated DM20 fibre products already offer a very low initial 'stretch' and zero residual 'creep' ( both defined technical terms, not colloquial ), and quality control is manageable.

I think Zoidberg has the answer. The device, say stay, has a specified length and they simply (I bet its not simple) loop the single filament back and forth until they have the defined numbers of loops for the defined strength. There will be a multitude of loops and 2 filament ends. They then make the terminations, which look like eyes in the pictures, at the end of the loops and coat the whole device in its 2 covers (all conducted under tension). I assume a multiple of loops make a multi filament device within which there will be much friction, maybe its unnecessary to terminate/secure the 2 filament ends....? and they are simply embedded in the polymer ends that make the eyes.

If you braid you sacrifice the low creep of the DM20 as you will have manufacturing stretch - (which you could part stretch out during manufacture) - but there would always be manufacturing/braid stretch negating the low creep of the DM20.

Its interesting that 'Dyneema' still has room for, considerable, development as has the use of Dyneema.

It seems the competition is carbon as it is mentioned in the various scripts and this mono filament technology applied to DM20 is said to be better than carbon as its lighter (and thus has less windage) for the same strength. For some reason I thought carbon rigging depended on mono filament construction - and if true some of the technology to use DM20 as being discussed is already available.

How do they terminate carbon rigging? (carbon rigging s not a technology I have ever had to ponder )

Jonathan

 

[Roberto]

That innovator John Franta at Colligo Marine has just emailed me some sparse details of his new hot-off-the-press standing rigging product - Para D!

With all respect, hardly an"innovation", Colligo has probably just bought the machine to make continuous filament elements
Established manufacturers of highly specialized rigging:
Yacht Rigging - Future Fibres
("Fibralite" for continuous filament, + other carbon rigging varieties)
Smart Rigging (subs of Fibermax), video showing cable manufacturing:

A local one working with Imocas, C40 etc DEN-RAN Accueil - Gréements et Solutions Textiles

 

[Neeves]

With all respect, hardly an"innovation", Colligo has probably just bought the machine to make continuous filament elements
Established manufacturers of highly specialized rigging:
Yacht Rigging - Future Fibres
("Fibralite" for continuous filament, + other carbon rigging varieties)
Smart Rigging (subs of Fibermax), video showing cable manufacturing:

A local one working with Imocas, C40 etc DEN-RAN Accueil - Gréements et Solutions Textiles

Like much marine, or specifically yacht development, the 'innovation' is the application of a known practice to single filament, or a collection of single filament, DM20. Having thought of a new focus of the application Colligo had to 'do it' and then test it, all of which would have a financial cost. All credit to them.

I think it all might be some time for it to trickle down to us and our parsimony . By which time lots will be manufacturing. If Colligo's claims are correct - they HAVE developed a 'better' product.

Jonathan

 

[Chiara’s slave]

Like much marine, or specifically yacht development, the 'innovation' is the application of a known practice to single filament, or a collection of single filament, DM20. Having thought of a new focus of the application Colligo had to 'do it' and then test it, all of which would have a financial cost. All credit to them.

I think it all might be some time for it to trickle down to us and our parsimony . By which time lots will be manufacturing. If Colligo's claims are correct - they HAVE developed a 'better' product.

Jonathan

When Jimmy Green can knock you up a set of them in 5 days, they’ll be ready for the mainstream.