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Seldén Furlex 40S | 4mm Forestay | 3000mm LP
  • Seldén Furlex 40S | 4mm Forestay | 3000mm LP
  • Seldén Furlex 40S | 4mm Forestay | 3000mm LP
  • Seldén Furlex 40S | 4mm Forestay | 3000mm LP
  • Seldén Furlex 40S | 4mm Forestay | 3000mm LP

Seldén Furlex 40S Jib Furling System

£313.02 £368.26 Save 15%
inc. VAT Typically delivered within 2-3 weeks

Seldén Furlex 40S is a compact jib furling system for dinghies, keelboats and small multihulls using a 4 mm forestay. It is designed for sails with a maximum recommended LP measurement of 3000 mm.

The 40S furls the sail around a rotating forestay wire rather than around an aluminium foil. It has no luff extrusion and is therefore intended for furling, not reefing. Forestay wire is not included with the kit.

Seldén Furlex 40S | 4mm Forestay | 3000mm LP
Seldén Furlex 40S Jib Furling System
£313.02 £368.26 Save 15%
inc. VAT Typically delivered within 2-3 weeks
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Furlex 40S Specifications

Specification Furlex 40S
Forestay diameter 4 mm
Maximum recommended LP 3000 mm
Maximum forestay service load 900 kg
Maximum halyard-swivel service load 300 kg
Furling-line diameter 5 mm
Drum diameter 100 mm
Complete-kit reference 539-470-11

What Is Included With 539-470-11?

The Furlex 40S complete kit includes the top swivel, halyard swivel, furling drum, tack fitting and furling line.

The structural 4 mm forestay wire is not included. The forestay forms the furling axis and rotates with the sail when the jib is furled.

Furling Rather Than Reefing

The 40S does not use the luff extrusion found on larger conventional Furlex systems. Because there is no aluminium foil supporting the sail luff, Seldén specifies the 20S, 30S and 40S as furling systems rather than reefing systems.

The jib should therefore be designed and used as a sail that is either deployed or furled away, rather than partially rolled as a reefed working sail.

40S Compared With the 30S

Both the Furlex 30S and 40S are designed around 4 mm forestay wire, but the 40S accommodates the larger sail.

Specification 30S 40S
Forestay 4 mm 4 mm
Maximum recommended LP 2500 mm 3000 mm
Furling line 4 mm 5 mm
Drum diameter 85 mm 100 mm

This makes sail size, rather than forestay diameter alone, an important distinction when choosing between the two systems.

Need Help Choosing a Small Furlex?

See our Seldén Furlex 20S, 30S and 40S range to compare the small-boat furling systems.

Contact Martin Leaning Masts & Rigging if you would like us to check your forestay diameter, sail LP measurement or existing Furlex before ordering.

539-470-11

Furlex 20S Data Sheet

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