Harken 29/18 mm Zircon Twisted Fiddle 1251, ILCA

Harken 29/18 mm Zircon Twisted Fiddle Block, 1251 - suits ILCA

Integrated ILCA Boom Kicker/Vang System

The Harken 29/18 mm Zircon Twisted Fiddle Block 1251 is a lightweight, low-friction fiddle block engineered for compact purchase systems on dinghies and high-performance sailing craft. Its unique twisted profile keeps the block upright and aligned, reducing tangles while delivering smooth, efficient line handling.

The Harken 29/18 mm Zircon Twisted Fiddle Block 1251 is designed to optimise compact purchase systems where conventional double blocks can twist, tip, or tangle under load. Featuring Harken's innovative twisted block geometry, it maintains a stable upright orientation as it travels through the purchase system, improving efficiency and reducing friction.

Unlike traditional double blocks, the slim twisted profile allows the block to slide smoothly while maintaining correct alignment, making it an excellent choice for applications where the line moves unevenly between two sheaves. This results in smoother operation and more consistent performance throughout the system.

Built with Harken's lightweight Zircon™ composite construction, the 1251 combines excellent durability with minimal weight. The low-friction bearing system ensures efficient line movement and responsive trimming, making it ideal for modern high-performance sailing applications.

The compact fiddle configuration is particularly suited to cascading purchases, vang systems, Cunningham controls, outhauls, and other precision control systems requiring reliable operation in confined spaces.

Engineered for demanding racing environments, the Zircon Twisted Fiddle Block delivers the lightweight performance, efficiency, and reliability that Harken hardware is renowned for.

Key Features

• Unique twisted fiddle block design
• Maintains upright orientation during operation
• Reduces twisting and tangling in purchase systems
• Lightweight Zircon™ composite construction
• Low-friction bearing system
• Smooth and efficient line handling
• Slim profile for compact rigging layouts
• Optimised for uneven line movement between sheaves
• High strength-to-weight ratio
• Ideal for high-performance sailing applications

Ideal For

• Dinghy sailing
• Vang systems
• Cunningham systems
• Outhaul systems
• Cascade purchase systems
• Precision control lines
• Performance racing

Technical Specifications

• Model: 1251
• Product Type: Zircon™ Twisted Fiddle Block
• Sheave Sizes: 29mm / 18mm
• Maximum Rope Diameter: 5mm
• Maximum Working Load (MWL): 91kg
• Construction: Lightweight Zircon™ Composite
• Bearing System: Low-friction bearings

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