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Cruising Genoa: Radial Taffeta

UKSailmakersCruisingMainGenoaSpectraRadial
A Najad 570 with radial Spectra roller-furling performance cruising sails.

Radial sails were the only performance construction choice before Tape-Drive®, X-Drive® and other loadpath construction methods were invented. Radial sails are still an option for cruising sailors who do not want an X-Drive or membrane sail.

The fully articulated panel layout of a tri-radial genoa rotates the cloth’s thread line to match the primary load paths between the three corners of the sail. Radial cut sails are made with long narrow panels (called gores) are designed to align the strong warp yarns of the laminate with the primary load paths of a sail as those loads spread across the sail.

The gores radiate from the corners of the sail, because all loads start from a corner and then run in arcs across the sail to the other two corners.  

UKSailmakersRadialLoadPaths
Radial layout approximately aligns the strongest yarns of the laminate with the primary loads that run between the corners of the sail.
UKSailmakersCruisingGenoaDacronTri Radial
Radial woven polyester cruising genoa.
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Tri-Radial Dacron roller/reefing genoa on a Dufour 40
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Tri-Radial polyester laminate roller/reefing genoa
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HydraNet roller/reefing genoa on an Oyster 68
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Tri-Radial Spectra Laminate roller/reefing genoa
Radial Dacron

Description:
Tri-Radial panel layout

Construction:
Long narrow panels radiating from the three corners that follow load paths connecting the corners.

Material:
Warp-oriented woven polyester cloth

Shape Stability:
★★

Longevity:
★★★

Shape after 500 hours:
Circa 60%

Price:
$$$

Radial Polyester

Description:
Tri-Radial panel layout

Construction:
Long narrow panels radiating from the three corners that follow load paths connecting the corners.

Material:
Warp-oriented polyester laminates


Shape Stability:
★★★

Longevity:
★★★

Shape after 500 hours:
Circa 60%

Price:
$$$

Spectra or Hydranet

Description:
Tri-Radial panel layout

Construction:
Long narrow panels radiating from the three corners that follow load paths connecting the corners.

Material:
Spectra: Warp-oriented Spectra laminates

Hydranet: A woven material with both Spectra and polyester fibers.

Shape Stability:
★★★

Longevity:
★★★ – ★★★★

Shape after 500 hours:
Circa 60-80%

Price:
$$$$$

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