Antal Mainsheet Tackle 7:1 – Complete, Sheaves 60 & 50

The Antal Mainsheet Tackle 7:1 – Complete, Sheaves 60 & 50 is a powerful and compact mainsail control system designed for performance and precision on boats up to approximately 36 feet. This configuration delivers a 7:1 mechanical advantage, offering increased trimming power while maintaining a clean, efficient layout.

Unlike traditional 6:1 setups, this system begins with a double block with becket mounted to the boom. The sheet then runs down through a lower triple block, which includes a single 60 mm primary sheave and an integrated cam cleat, before passing through a triple 50 mm block mounted above the 60 mm sheave. A final single block is mounted forward on the boom to complete the 7:1 reeving. The result is a smooth, balanced system featuring six 50 mm sheaves and one 60 mm sheave, ideal for handling dynamic mainsail loads with reduced effort.

Key Features

• 7:1 Mechanical Advantage
  Provides superior control and power, making it easier to handle higher loads—especially in stronger winds or with larger mainsails.
• Balanced Multi-Sheave Configuration
  Features one 60 mm primary sheave for load-bearing and six 50 mm sheaves across the upper and intermediate blocks, optimising line flow and reducing friction.
• Integrated Cam Cleat
  The lower block includes a built-in cam cleat for secure and immediate line control, ideal for short-handed or cruising crews.
• Compact, High-Efficiency Layout
  This tackle system uses a space-saving vertical triple block and a becket-start upper block to maintain a low-profile geometry while achieving higher purchase.
• Dual Ball Bearing Sheaves
  All sheaves are fitted with ball bearings for smooth, efficient operation under load, minimising wear and improving handling.
• Durable Marine Construction
  Built from anodised aluminium and stainless steel, ensuring strength, corrosion resistance, and longevity in demanding environments.

Specifications

• Sheave Sizes: 1 × 60 mm (lower), 6 × 50 mm (intermediate and upper)
• Configuration:
  • Upper: Double block with becket and single block (50 mm sheaves)
  • Lower: Single 60 mm sheave with triple 50 mm block mounted above, integrated cam cleat
• Rope Compatibility: Up to Ø10 mm
• Safe Working Load (SWL): 800 kg
• Recommended Boat Size: Up to 36 ft (11 m)

The Antal E7/60 mainsheet tackle is a refined, high-purchase solution for sailors who want maximum mechanical advantage in a compact format. Its advanced sheave arrangement and integrated cleating make it ideal for cruising and club racing applications where ease of handling and system reliability are key.