Name: Narrow 18mm FLY pulley
Brand: HARKEN
Price: 30.41 EUR
Availability: InStock

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Narrow 18mm FLY pulley - HARKEN

Performance and strength with our Harken 18mm narrow FLY pulley. Ultra-compact design, lightness and robustness guaranteed.

More details

Designed for modern technical ropes, it offers optimal performance thanks to its high-end materials and intelligent design that pushes the limits of traditional blocks.

Sheave Ø: 18 mm
Overall length: 28 mm
Weight: 7.2 g
Maximum working load: 125 kg
Breaking load: 450 kg
Maximum rope Ø: 5 mm
Construction: stainless steel ball bearings and fiber-reinforced composite side plates
Supplied with a polyester-covered Spectra® rope

Compared to other models on the market or previous generations, the Harken FLY 18 mm Block stands out clearly for its weight/strength ratio. Where many competing models have either a higher weight or a lower load capacity, this block ensures exceptional reliability without weighing down the equipment. Its compact design allows for installation as close to the deck as possible, making it the benchmark for racing sailboats, foiling dinghies and for any tackle or vang system requiring compactness and robustness.

Key technical advantages: technology & performance

Lashing attachment system allowing customized integration on all types of decks and spars.
Stainless steel ball bearings with central race for better efficiency and increased durability.
Fiber-reinforced composite materials: superior wear resistance, even in extreme conditions.
Supplied with Spectra® rope known for its strength and dimensional stability.
Ideal for performance in Grand Prix racing and on all sporting waters.

With the Harken FLY 18 mm Narrow Block, invest in excellence: performance, longevity and precision combined to boost your maneuvers in all circumstances.

SKU: 2 161 | Barcode: 097653271970

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€30⁴¹ 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) 7.2 g
Weight (oz) .25 oz
Max rope Ø (mm) 5 mm
Max rope Ø (in) 3/16 in
Maximum working load (kg) 125 kg
Maximum working load (lb) 275 lb
Breaking load (kg) 450 kg
Breaking load (lb) 992 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.