Karver Staysail Jammer Kit – KJSK10: Secure and Efficient Staysail Tensioning

The Karver KJSK10 Staysail Jammer Kit is a compact, high-performance solution designed to optimize staysail setups for strong weather conditions. Whether using a lashing connection or a straight pin toggle, this kit provides a secure and efficient method for tensioning a flying staysail on a furler.

Why Use a Staysail on a Flying Furler?

A staysail on a flying furler is one of the most effective solutions for heavy weather sailing, offering:

• A clear deck when the staysail is not in use.
• Easy and safe deployment before strong weather sets in.
• A lightweight and stowable system, making it practical for long cruisers.
• Compatibility with existing flying furlers, making it a flexible upgrade.
• Cockpit operation, enhancing safety and reducing deck work in rough conditions.

How the KJSK10 Works

One of the biggest challenges with removable staysails is achieving proper tension at the deck level. The Karver KJSK10 Staysail Jammer Kit addresses this by integrating:

• A directly mounted jammer on the bracket for a clean and compact installation.
• A 3-jaw jammer that clamps the line securely, preventing stretch and loss of tension.
• High-load sheaves to create a powerful 3:1 purchase system, reducing effort when tensioning the stay.
• Universal compatibility with all furlers using a 3:1 friction sheave system.

Two Connection Options

The KJSK10 is available in two configurations:

1. Lashing Fixation: Offers maximum flexibility and weight reduction.
2. M10 Pin Fixation: Provides a direct, robust connection to the deck.

Specifications

• Safe Working Load (SWL): 2.5T (The system uses the KJC10 jammer, rated for 1T, but the 3:1 purchase system reduces the load on the jammer)
• Max Line Diameter: 8mm
• Available Connections: Lashing or M10 Pin

Enhancing Performance

For optimal efficiency, Karver recommends pairing the KJSK10 with a flying furler (if not already installed) and a halyard lock. The halyard lock prevents stretch in the system, thereby increasing the efficiency of the staysail.

A Recognized and Award-Winning Solution

The Karver KJSK Staysail Jammer Kit has been recognized for its innovation, receiving a Special Mention at the Dame Award 2022. Its clever, compact design ensures more boats can benefit from a dedicated staysail, improving safety and performance in challenging conditions.

The Karver KJSK10 Staysail Jammer Kit is the perfect solution for sailors looking to maximize efficiency, ease of use, and safety when deploying a flying staysail.