NTR TB Mainsheet Car With Shackle & 2 Double Control Line Sheaves

Advanced Mainsheet Traveller Control

The Lewmar NTR TB Mainsheet Car with Shackle & 2 Double Control Line Sheaves is engineered for powerful, precise mainsheet control in high-load sailing environments. Designed for performance cruising yachts and race boats alike, it delivers reliable load handling, smooth traveller movement, and refined control-line management where accuracy and durability are essential.

Track-Bearing (TB) Mainsheet Car Design

The Track-Bearing (TB) configuration is purpose-built to transmit high mainsheet loads directly into Lewmar NTR traveller tracks with exceptional stability. By maintaining accurate alignment and predictable travel under load the TB design supports confident trimming and easing, even on yachts carrying large, powerful mainsails and operating in demanding conditions.

Integrated Shackle Attachment

A robust, high-strength shackle provides a secure and versatile attachment point for mainsheet blocks or purchase systems. This direct mechanical connection ensures efficient load transfer while allowing flexible rig configuration to suit a wide range of deck layouts and sail-handling arrangements, without compromising strength or reliability.

Two Double Control Line Sheaves for Balanced Handling

The car integrates two double control line sheaves, allowing traveller control lines to be led cleanly, symmetrically, and with minimal friction. This multi-sheave arrangement provides balanced load distribution for port and starboard control lines, delivering exceptionally smooth response during trimming and easing. Reduced friction improves handling feel, minimises line wear, and supports precise traveller adjustment under high load.

Marine-Grade Construction

Manufactured from durable, marine-grade materials and precision-engineered to Lewmar’s proven NTR standards, he mainsheet car is built to withstand sustained loads, shock forces, and frequent adjustment. Its robust construction delivers excellent resistance to wear and corrosion, ensuring consistent performance and long service life in offshore and performance-focused sailing environments.

Smooth, Confident Performance

Carefully engineered bearing surfaces and load paths ensure low friction, predictable movement along the traveller track. Combined with efficient control-line routing through the integrated sheaves, the system delivers smooth mainsheet traveller operation, accurate sail-shape control, and reduced handling effort during high-workload manoeuvres.