Name: 29mm Vertical Carbo Pulley
Brand: HARKEN
SKU: 349
Price: 31.26 EUR
Availability: InStock

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29mm Vertical Carbo Pulley

More details

29 mm Vertical Carbo Block – Deck Hardware

Optimized for intensive use on deck, it allows for easy and secure adjustment, even in difficult conditions.

Sheave Ø: 29 mm
Overall length: 56 mm
Ultra-light weight: 31 g
Max. rope Ø: 8 mm
Max. working load: 150 kg
Breaking load: 454 kg

It perfectly complements the brand's Black Magic® range, providing a lightweight and economical alternative, while guaranteeing high-end performance. Usable as a thimble block without weighing down your rigging, it allows you to optimize the maneuverability of your adjustments without compromising safety or reliability.

Carbo AirBlocks® construction: lightness, durability, and corrosion resistance.
Reduced friction: smooth handling and precise adjustments at all speeds.
High load capacity: ideal for demanding applications and high-performance small sailboats.
Versatile design: can be used as a thimble block without excess weight.

SKU: 349 | Barcode: 097653103813

€31²⁶ EUR

Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 56 mm
Length (in) 2 3/16 in
Weight (g) 31 g
Weight (oz) 1.1 oz
Max. rope Ø (mm) 8 mm
Max. rope Ø (in) 5/16 in
Maximum working load (kg) 150 kg
Maximum working load (lb) 330 lb
Breaking load (lb) 1000 lb
Breaking load (kg) 454 kg

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.