Halyard

   Vectran while very low stretch and in many ways the perfect fibre, is actually not that great long term in the marine environment. Salt and UV cause it to deteriorate. That said with an insert at the cleat point it would do exactly what you want.
So would a 12 strand dyneema product though, and that would be much more stable in the long term. You will want to put an insert at the cleat point to ensure that the cleat grips. I'd make it significantly longer than the cleat length as all 12 strand rope seems to shrink over time as the fibres separate.

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Paramedic Send Private Message Find Member's Posts Really should get out more Joined: 27 Jan 06 Location: United Kingdom Online Status: Offline Posts: 929	Post Options Post Reply Quote Paramedic Report Post Quote Reply Topic: Halyard Posted: 27 Apr 15 at 7:31pm
	Vectran while very low stretch and in many ways the perfect fibre, is actually not that great long term in the marine environment. Salt and UV cause it to deteriorate. That said with an insert at the cleat point it would do exactly what you want. So would a 12 strand dyneema product though, and that would be much more stable in the long term. You will want to put an insert at the cleat point to ensure that the cleat grips. I'd make it significantly longer than the cleat length as all 12 strand rope seems to shrink over time as the fibres separate.

piglet Send Private Message Find Member's Posts Really should get out more Joined: 04 Jan 07 Online Status: Offline Posts: 514	Post Options Post Reply Quote piglet Report Post Quote Reply Posted: 26 Apr 15 at 8:31pm
	Sheath went on the 200 main halyard today, managed to knot the Dyneema core so it would hold in the cleat and made it to the start. Would something like 4mm Vectran be sufficiently low stretch, grip in the cleat and be resistant to wear at the cleat and sheave?