Name: 29mm Ringot triple bullet
Brand: HARKEN
SKU: 87
Price: 81.33 EUR
Availability: InStock

Voir tous les produits de la catégorie triple pulley

29mm Ringot triple bullet - HARKEN

The Harken 29 mm Triple Bullet Block with Becket is a low-friction block, ideal for precise and efficient guiding of control lines to the aft. Compact and lightweight, it stands out for its fast engagement and release, whether the load is high or light.

Sheave diameter: 29 mm
Overall length: 95 mm
Weight: 128 g
Shackle pin diameter: 5 mm
Maximum rope diameter: 8 mm
Maximum working load: 272 kg
Breaking load: 907 kg

The Harken 29 mm Triple Bullet Block with Becket successfully combines compactness and high strength. This makes it a preferred choice for demanding racers or owners who want to optimize their trim system without compromising on durability or performance.

Low-friction technology: optimal guiding, even under high load, ensures ultra-smooth rope handling.
Compact and lightweight construction: easy installation, reduced weight on board, and great maneuverability.
Extreme versatility: suitable for most control lines thanks to its triple design and generous diameter.
High strength: maximum loads (272 kg working, 907 kg breaking) guarantee safe use, even during intense efforts.

SKU: 87 | Barcode: 097653002932

€81³³ EUR

Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 95 mm
Length (in) 3 3/4 in
Weight (g) 128 g
Weight (oz) 4.5 oz
Shackle Ø (mm) 5 mm
Shackle Ø (in) 3/16 in
Max. rope Ø (mm) 8 mm
Max. rope Ø (in) 5/16 in
Max. working load (kg) 272 kg
Max. working load (lb) 600 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.