Manufacturer part #:7411.11 1/2 Underdeck Furling System
Technical Description
Underdeck Furling System 1 with 1/2" (12.7 mm) clevis pin
1/4", 9/32", 5/16"
6, 7, 8 mm
-8, -10
5.72, 6.35 mm
1/2"
12.7 mm
28' - 36'
8.3 - 11 m
10 5/8 in
270 mm
15 5/8 in
397 mm
51/2 in
140 mm
4 5/8 in
117 mm
9 5/8 in
244 mm
45'11"
13.99 m
52'11"
16.12 m
Manufacturer part #:7411.11 1/2 Underdeck Furling System
Harken's MKIV Underdeck Furling is the perfect solution for performance racers and cruisers that want an aerodynamic system with a minimal amount of equipment above deck. The drum is located beneath the deck, lowering the tack height for maximized sail area.
Easy Reefing and Furling
Ball bearings between the center hub and deck bearing provide low-friction furling.
Durable Materials and Construction
Size 1 and larger: Aluminum line guard, torque tube and swivels are deep-saturation Hardkote-anodized for no-fade UV stabilization and durability. The Hardkoteanodized line guard is urethane coated for additional corrosion protection.
The threaded height adjuster uses dissimilar metals (stainless steel and bronze) to prevent galling.
Easy to Maintain
The furler can be flushed clean with detergent water like traditional furling.
The through-deck bearing minimizes water seepage into the underdeck compartment.
Torque Tube Houses
The torque tube houses a full-length turnbuckle for optimal mast rake and tension adjustment.
Articulating T orque Tube Attachment
A torque tube universal joint on Units 1, 2, and 3 provides a high-strength universal connection to allow ample headstay sag when sailing downwind.
Belowdeck Drum Fits Narrow Bows
The small outside drum diameter lets unit fit inside narrow bows.
Installation Options
Units 1 and larger have self-locking threaded height adjusters for a correct fit between the chainplate and deck.
Harken's MKIV Underdeck Furling is the perfect solution for performance racers and cruisers that want an aerodynamic system with a minimal amount of equipment above deck. The drum is located beneath the deck, lowering the tack height for maximized sail area.
Easy Reefing and Furling
Ball bearings between the center hub and deck bearing provide low-friction furling.
Durable Materials and Construction
Size 1 and larger: Aluminum line guard, torque tube and swivels are deep-saturation Hardkote-anodized for no-fade UV stabilization and durability. The Hardkoteanodized line guard is urethane coated for additional corrosion protection.
The threaded height adjuster uses dissimilar metals (stainless steel and bronze) to prevent galling.
Easy to Maintain
The furler can be flushed clean with detergent water like traditional furling.
The through-deck bearing minimizes water seepage into the underdeck compartment.
Torque Tube Houses
The torque tube houses a full-length turnbuckle for optimal mast rake and tension adjustment.
Articulating T orque Tube Attachment
A torque tube universal joint on Units 1, 2, and 3 provides a high-strength universal connection to allow ample headstay sag when sailing downwind.
Belowdeck Drum Fits Narrow Bows
The small outside drum diameter lets unit fit inside narrow bows.
Installation Options
Units 1 and larger have self-locking threaded height adjusters for a correct fit between the chainplate and deck.