Complication – Eternal Pursuit of Energy Stability
As known to all, energy is the key to a well-functioning wristwatch. Previously we have seen watches with very high power reserve. But it is quite another thing of output quality. For instance, a watch with high power reserve may perform badly with unstable power output and short-term duration. In other words, the goal is to solve issues relating to the wearing of the watch and to the duration of its operation, while nonetheless achieving remarkably precise time measurement.
What is the fusée-chain? With a fuséechain transmission system, the driving force remains entirely stable throughout the duration of the power reserve. Whereas the spring at its heart imparts its strength to the barrel, the helicoidal shape of the fusée – stemming from a complex calculation performed specifically for the mainspring – compensates for the variations in force of the barrel that will progressively occur. The transmission between the barrel and the fusée of the Academy Christophe Colomb Hurricane is handled via an 18 cm-long chain composed of 585 parts. Though the component is extremely complex, it is capable of withstanding over 3 kilograms of tensile force once it is fitted in place.
Zenith conceived and patented a revolutionary self-regulating gyroscopic mechanism – the Gravity Control system, designed to ensure that the regulating organ and the escapement are permanently kept in this position. This is different from the tourbillon that just corrects for the various positions by equaling them out along the four vertical axes every minute. Gravity Control derives from the marine chronometers historically produced by Zenith the principle of gimbal suspension, a kind of pivoted support first introduced on marine compasses in the 16th century and designed to enable them to turn and maintain their horizontal position, even when they were no longer aligned due to the pitching and rolling of a ship.