Javelin
Well-Known Member
Polyester "Dacron" (Dupont's type 52 high modulus fibre) is a great material but its downfall is its bias which effectively limits the style and cut of the sail.
The more expensive cuts like the radial cut give a better for longer shape however standard dacron does not lend itself due to incorrect bias in the warp/weft.
So as a result polyester sails are generally cross cut and most radial cut sails tend to be laminates like pentex/mylar with or without teffeta.
The exception is North who developed their own polyester weave which allows them to build radial cut sails.
Folk do have cruising sails made from more exotic materials like Vectran or hydra net (spectra/dyneema) but they are a lot more expensive.
The more expensive cuts like the radial cut give a better for longer shape however standard dacron does not lend itself due to incorrect bias in the warp/weft.
So as a result polyester sails are generally cross cut and most radial cut sails tend to be laminates like pentex/mylar with or without teffeta.
The exception is North who developed their own polyester weave which allows them to build radial cut sails.
Folk do have cruising sails made from more exotic materials like Vectran or hydra net (spectra/dyneema) but they are a lot more expensive.
