Name: 29mm Ringot double bullet
Brand: HARKEN
SKU: 85
Price: 58.41 EUR
Availability: InStock

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29mm Ringot double bullet

More details

Designed for optimal control of lines to the aft on any type of sailboat. Its compact and lightweight design ensures smooth and efficient maneuvers even under heavy load, while maintaining a low friction coefficient for effortless use.

Sheave Ø: 29 mm
Overall length: 89 mm
Weight: 78 g
Max rope Ø: 8 mm
Maximum working load: 181 kg
Breaking load: 907 kg

The Harken 29mm double Bullet block with becket stands out for its remarkable lightness and strength. Unlike traditional blocks that add weight to the rigging and offer slower rotation, this model boasts impressive take-up acceleration, allowing for quick adjustment under any load. Its compact design facilitates installation anywhere on board, while the quality of Harken materials ensures maximum resistance to marine corrosion and daily wear and tear.

Lightweight and ultra-compact Harken design, easy to integrate into the most demanding setups
Low friction coefficient for quick release even in extreme conditions
Superior robustness: the stainless steel body and optimized sheave ensure long durability, even under heavy load
Versatility: adapts to ropes up to 8 mm, ideal for most applications on sport or cruising sailboats
Increased safety: high maximum working loads to meet the needs of professional and demanding amateur sailors

SKU: 85 | Barcode: 097653002918

€58⁴¹ EUR

Length (in) 3 1/2 in
Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 89 mm
Weight (g) 78 g
Weight (oz) 2.75 oz
Shackle Ø (mm) 5 mm
Shackle Ø (in) 3/16 in
Max. line Ø (mm) 8 mm
Max. line Ø (in) 5/16 in
Maximum working load (kg) 181 kg
Maximum working load (lb) 400 lb
Breaking load (kg) 907 kg
Breaking load (lb) 2000 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.