Constrictor Clutch

SailTek Ltd, the Supplier of Ronstan and Andersen products now has the award winning 'Constrictor' clutch for holding rope from 6mm to 14mm diameter. Unlike all conventional clutches the Constrictor system does not crush the rope between two metal surface, the loaded rope is held securely in a textile sock, itself attached to an anchor base. The rope runs freely through the sock in one direction, but is gripped instantly within the sock when running out in the opposite direction, providing increasing holding power as the load increases.

 The advantages of the Constrictor can be summarized as :

.Stronger - Twice the holding power of conventional rope clutches

.Lighter - Three times lighter than conventional rope clutches

.No abrasion or rupture - grip is achieved by fibre to fibre contact which is less aggressive    than traditional metal cam.

.Release under load - easily released without the use of a winch

.Remote release system - the Dyneema lanyard can be extended for remote release such as a halyard lock at the top of the mast.

.Competitive Pricing - compared to the equivalent holding power of a conventional clutch.

The Constrictor solution is being used on top Maxi, Mini, Multi, IMOCA and AC72 yachts providing a trouble-free and ergonomic solution to rope holding.

 The Constrictor comes in 5 different sizes dependent on rope diameter:






 Breaking Load (daN)


Constrictor Rope Clutch, suits 6mm rope



1150 (6mm dia), 450 (5mm dia)


Constrictor Rope Clutch, suits 8mm rope



1800 (8mm dia), 600 (6mm dia)


Constrictor Rope Clutch, suits 10mm rope



2100 (10mm dia), 1400(8mm dia)


Constrictor Rope Clutch, suits 12mm rope



3500 (12mm dia), 1500(10mm dia)


Constrictor Rope Clutch, suits 14mm rope



4350 (14mm dia), 1800(12mm dia)

For more information contact


CT306P001 - Constrictor TC Single 6mm Rope
(+ postage: £4.17)

CT308P001 - Constrictor TC Single 8mm Rope
(+ postage: £4.17)

CT310P001- Constrictor TC Single 10mm Rope
(+ postage: £4.17)

CT312P001 - Constrictor TC Single 12mm Rope
(+ postage: £4.17)

CT314P001 - Constrictor TC Single 14mm Rope
(+ postage: £4.17)

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