stick to a traditional, simplified self-tacking arrangement, the British team has opted for a "black box" system that introduces unprecedented control over sail shape.
Mechanical Anatomy of the Black Box
Inside this mysterious enclosure lies a complex hydraulic symphony. The system utilizes a double-ended ram and a three-chamber hydraulic setup to manage the jib car's movement. Unlike standard systems that rely on wind pressure to flip the jib across the deck,
uses active hydraulic power to pull the car to the windward side. A negative 3:1 purchase ratio ensures that for every centimeter the piston travels, the control lines move three, allowing for rapid, aggressive adjustments in the heat of a tack.
INEOS have something no other team has: 3D Jib Trimmer
Solving the Sheeting Angle Dilemma
The core problem with standard self-tacking jibs is the static sheeting angle. Typically, you cannot adjust the clue attachment point while racing.
solves this by moving the entire track mechanism forward and backward. This allows the crew to tighten the leech for depth or ease it for speed without ever slowing down. To prevent the massive forces from jamming the car, they utilize a clever crisscross rope arrangement that stabilizes the front and back tracks simultaneously.
Strategic Implications and Power Consumption
This isn't just a mechanical flex; it’s a tactical weapon. By hydraulically forcing the jib to windward, the crew can back the sail to bear away from "irons" or execute a head-to-wind maneuver with far more agility than
. However, sophistication carries a price. This system consumes valuable hydraulic oil and increases the risk of mechanical failure. In the relentless pursuit of the
