Ronstan Series 40 Auto Ratchet Orbit Block, 40mm Sheave, 14:1 Holding Power

Experience unparalleled control and efficiency on your sailboat with the Ronstan Series 40 Auto Ratchet Orbit Block. Engineered for racing performance, this block boasts the highest holding power available, leveraging Ronstan's patented Generation 2 sheave geometry for superior grip and minimal rope wear. Its innovative automatic ratchet system engages precisely under load, then disengages for incredibly smooth and free easing of sheets, making it ideal for rapid maneuvers like gybing asymmetric spinnakers. Designed for demanding marine applications, this lightweight and compact block is an essential upgrade for any serious sailor.

Key Features & Benefits:

• Exceptional Holding Power: Achieves an impressive 14:1 holding power, significantly enhancing control and reducing fatigue.
• Automatic Load-Sensing Ratchet: Engages automatically under load for secure handling and disengages for smooth, unhindered sheet release.
• Optimized Sheave Design: Features Generation 2 cross-hole geometry with 8 gripping faces to directly resist line movement and minimize rope wear.
• Robust Construction: Built with a hard anodized aluminum sheave, high compression carbon black Acetal ball bearings, and a toughened glass fiber reinforced Nylon frame for maximum durability.
• Flexible Swivel Shackle Head: Allows for unlimited block rotation, providing versatile rigging options and compatibility with harsh fixing points.
• Lightweight & Compact: Designed for an optimal strength-to-weight ratio, ensuring high performance without unnecessary bulk.
• Secure Dyneema® Link: Features an easily fitted and securely retained Dyneema® link, compatible with strops, webbing, and carbon connection points.

Specifications:

• Sheave Diameter: 40mm (1-9/16 inches).
• Maximum Rope Diameter: 9mm (5/16 inches).
• Maximum Working Load (MWL): 175kg (385 lbs).
• Breaking Load (B.L.): 500kg (1,100 lbs).
• Weight: 44g (1.5 oz) (Original Vendor Content).

Applications:

• Dinghy mainsheet systems.
• Mainsheet fine tune systems on sportsboats & small keel boats.
• Spinnaker and jib sheets on dinghies, especially modern asymmetric classes.
• Control line applications on larger yachts.