Name: Carbo Pulley 57 mm Ratchamatic - GRIP x 1.5 - Power 3
Brand: HARKEN
SKU: 2 165
Price: 129.00 EUR
Availability: InStock

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Carbo Pulley 57 mm Ratchamatic - GRIP x 1.5 - Power 3

More details

This block incorporates Ratchamatic® technology, allowing for an automatic and seamless transition between free-running and ratchet modes depending on the load.

Overall length: 103 mm
Weight: 104 g
Maximum working load: 227 kg
Breaking load: 907 kg
Sheave diameter: 57 mm

The Harken Carbo 57 mm Ratchamatic Power 3 Block stands out with an exceptional holding capacity of 15:1 and intelligent load management thanks to its Ratchamatic® system. Unlike conventional ratchet models that require manual engagement, this model smoothly switches between modes, providing the sailor with increased maneuverability and responsiveness, particularly appreciated in light breezes or sudden gusts.

Smart Ratchamatic® system: the load-sensing mechanism automatically engages the ratchet to optimize holding without manual intervention.
Maximum versatility: suitable for both precise adjustments and rapid maneuvers in racing.
Ultra-light and robust design: at only 104g, it compromises neither strength (up to 907 kg breaking load) nor reliability.
Wide rope compatibility: for any rope up to 10 mm in diameter, perfect for the diverse needs of sailors.
Specially designed for demanding racers, the Harken Carbo 57 mm Ratchamatic - GRIP x 1.5 - Power 3 Block ensures an ideal balance between power, control, and endurance. It establishes itself as an essential benchmark in the high-performance ratchet block category, allowing you to fully enjoy your sailboat's performance on every outing or competition.

SKU: 2 165 | Barcode: 097653284239

€129⁰⁰ EUR €135²⁷

Length (mm) 103 mm
Length (in) 4 1/16 in
Weight (g) 104 g
Weight (oz) 3.7 oz
Maximum working load (kg) 227 kg
Maximum working load (lb) 500 lb
Breaking strength (kg) 907 kg
Breaking strength (lb) 2000 lb
Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Max rope Ø (mm) 10 mm
Max rope Ø (in) 3/8 in
Shackle pin Ø (mm) 5 mm
Shackle pin Ø (in) 3/16 in
Holding power 15:1

Our tips for choosing

Workload and breaking load

Choose your pulley based on the workload it will have to handle and the desired gear ratio. The orders of magnitude vary depending on the support: 400 to 500kg for the mainsheet or cunningham of an 18-foot catamaran, 100 to 200kg for the mainsheet or downhaul of a 420 dinghy for example.

Coefficient of friction

Modern ball bearing pulleys offer a much lower coefficient of friction than those without balls and are recommended for maneuvers that require constant adjustment (mainsail sheet, downhaul, cunningham, spinnaker essentially).

Restraining force

For the mainsheet which is not always fully tightened, or even never on some boats which require constant adjustment (29er, 49er, Class A,...) as for the spinnaker sheet, favor automatic or non-automatic winch pulleys, which considerably save muscles and gloves thanks to a retention that can go up to 70% of the workload.

Sheave diameter

Choose the diameter of the pulley according to the diameter of the rope it will guide. For example, depending on the support and workload, a 40 or 57 sheave is very suitable for a 6 to 10mm mainsail sheet. For Cunningham or downhaul type maneuvers, 16 or 22 sheaves are suitable.

Material

Stainless steel, carbon, composite, it's essentially a matter of weight, with an impact on the price: it all depends on the importance you attach to it. If the pulley is to guide a cable, use aluminum sheaves which will be much more resistant than composite materials.