Name: Carbo 57mm Violin Pulley Ratchet to Ringot
Brand: HARKEN
SKU: 2 674
Price: 129.00 EUR
Availability: InStock

Voir tous les produits de la catégorie simple pulley

Carbo 57mm Violin Pulley Ratchet to Ringot - HARKEN

This manual winch block keeps lines under load while ensuring an exceptional balance between secure hold and controlled release.

Sheave Ø: 57 mm
Overall length: 143 mm
Weight: 121 g
Maximum rope Ø: 10 mm
Maximum working load: 359 kg
Breaking load: 1080 kg
Holding power: 10:1
Shackle Ø: 5 mm

The Harken Carbo 57mm Fiddle Ratchet with Ringot Block stands out for its extreme lightness and its ability to withstand high loads, while remaining easy to handle by hand. In addition, the ratchet system ensures effortless control, ideal for repeated maneuvers during regattas or pleasure cruises.

Lightweight Carbo composite structure for optimal performance with every use.
Precise ratchet system providing a 10:1 holding power ratio, ideal for handling lines under high tension.
Can accommodate ropes up to 10 mm in diameter, perfect for multiple onboard applications.
5 mm stainless steel shackle for a solid and durable attachment.
Capable of withstanding an impressive breaking load of 1080 kg.

SKU: 2 674 | Barcode: 097653238225

€129⁰⁰ EUR €138⁹⁴

Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 143 mm
Length (in) 5 5/8 in
Weight (g) 121 g
Weight (oz) 4.3 oz
Max. rope Ø (mm) 10 mm
Max. rope Ø (in) 3/8 in
Max. working load (kg) 359 kg
Max. working load (lb) 792 lb
Breaking load (lb) 2380 lb
Breaking load (kg) 1080 kg
Shackle Ø (mm) 5 mm
Shackle Ø (in) 3/16 in
Holding power 10:1

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.