Name: FLY 18 mm double pulley
Brand: HARKEN
Price: 52.45 EUR
Availability: InStock

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FLY 18 mm double pulley - HARKEN

FLY 18mm double pulley: Ultra-lightweight and exceptionally strong & high-performance for sporty sailboats. Benefit from Harken innovations.

More details

The Harken 18 mm Double FLY Block is a high-performance, ultra-strong, and incredibly lightweight piece of equipment for applications requiring power and compactness. Designed for sport and racing sailboats, it offers exceptional performance thanks to technical materials and an optimized design.

Sheave Ø: 18 mm
Overall length: 28 mm
Weight: 17 g
Max rope Ø: 5 mm
Maximum working load: 204 kg
Breaking load: 680 kg

The Fly range uses fiber-reinforced composite and stainless steel ball bearings:

Ultra-light design thanks to high-strength fiber composite
Stainless steel ball bearings for smooth operation and maximum durability
Integrated rope guide, ensuring perfect alignment and limiting premature wear
Polyester-covered Spectra® line included, guaranteeing safety and performance
Suitable for all intense maneuvers on Grand Prix sailboats, foiling dinghies, or sport sailboats

Designed to excel where demands are highest.

SKU: 2 158 | Barcode: 097653268956

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€52⁴⁵ EUR

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Sheave Ø (mm) 18 mm
Sheave Ø (in) 23/32 in
Length (mm) 28 mm
Length (in) 1 3/32 in
Weight (g) 17 g
Weight (oz) .6 oz
Max. rope Ø (mm) 5 mm
Max. rope Ø (in) 3/16 in
Max. working load (kg) 204 kg
Max. working load (lb) 450 lb
Breaking load (kg) 680 kg
Breaking load (lb) 1500 lb

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.