Antal Mainsheet Tackle 8:1 – Complete, Sheaves 60 & 50

The Antal Mainsheet Tackle 8:1 – Complete, Sheaves 60 & 50 is a high-efficiency sail control system tailored for yachts up to approximately 36 feet. Designed to deliver a full 8:1 mechanical advantage, this configuration is ideal for cruisers or club racers seeking powerful, precise mainsheet handling in a compact and reliable setup.

At the core of the system is a primary 60 mm sheave mounted in the lower block, which handles the main load path. Above it sits a triple 50 mm block with becket, anchoring the start of the sheet and distributing the load efficiently. Two additional boom-mounted blocks—one triple and one single, both with 50 mm sheaves—complete the reeving path, resulting in a total of seven 50 mm sheaves and one 60 mm sheave.

Key Features

• 8:1 Mechanical Advantage
  Offers maximum purchase for fine sail control, reducing physical effort even under higher mainsail loads or gusty conditions.
• Optimised Multi-Sheave Layout
  Combines one 60 mm sheave for primary load handling with seven 50 mm sheaves to maintain compactness and reduce friction.
• Triple Becket Block Start
  The system begins at a triple 50 mm block with becket, mounted above the primary sheave, ensuring clean geometry and effective lead angles.
• Boom-Mounted Triple and Single Blocks
  A combination of triple and single 50 mm blocks on the boom complete the system, ensuring smooth line routing and efficient load sharing.
• Integrated Cam Cleat
  The lower block features a built-in cam cleat for quick and secure sheet control—ideal for single or short-handed sailing.
• Low-Friction Performance
  All sheaves are equipped with dual ball bearings, delivering smooth and reliable operation even under load.
• Rugged Marine Build
  Made from anodised aluminium and stainless steel, the system is built to perform in the toughest saltwater environments.

Specifications

• Sheave Sizes: 1 × 60 mm (lower), 7 × 50 mm (upper and intermediate)
• Configuration:
  • Upper: Triple block and single block (50 mm sheaves)
  • Lower: Single 60 mm sheave with mounted triple 50 mm becket block above, plus cam cleat
• Rope Compatibility: Up to Ø10 mm
• Safe Working Load (SWL): 800 kg
• Recommended Boat Size: Up to 36 ft (11 m)

This complete Antal 8:1 mainsheet tackle system is a refined, high-purchase option for sailors who require greater control without compromising on space or simplicity. Compact, smooth-running, and robust, it is an ideal upgrade for serious cruising or club-level racing.