Steel case cartier rotonde de cartier astrotourbillon replica watch
This construction is highly unusual for a central cartier rotonde de cartier astrotourbillon replica watch and has both aesthetic and technical consequences. Visually, the elongated carriage makes a complete revolution around the entire surface of the dial in one minute. Technically, in order to ensure the equilibrium of the carriage, it was necessary to incorporate a platinum counterweight on the opposite side of the carriage, hidden under the central dial. The off-centred balance bridge, shaped like an arrow, indicates the seconds. Furthermore, the weight of the carriage had to be limited (0.39 g for the entire carriage, excluding the counterweight) in order to control its inertia during rotation, hence the choice of titanium for its construction.
With the Rotonde de Cartier Astrotourbillon watch, Cartier unveils a movement that has been designed and produced entirely by Cartier master watchmakers. This spectacular creative and highly technical movement is the fruit of five years of development led by the Cartier Manufacture in La Chaux-de-Fonds.
However, this spectacular tourbillon, christened the Astrotourbillon movement, also incorporates several other features that make it truly unique. As in a classic tourbillon, the carriage is driven by the third wheel of the gear train.The 9451 MC movement incorporates a tourbillon carriage containing the various organs of the escapement and sprung balance. Similarly, the pinion of the escapement cartier rotonde de cartier replica rotates around a fixed seconds-wheel (the fourth wheel of the gear train) in order to drive the escapement.
Its white- or pink-gold case, 47 mm diameter, large horn gap, and decorative screws all enhance the hypnotic effect of this truly elegant watch.Cartier has selected the contemporary elegance of the extra-large Rotonde de Cartier watch to house this movement.
Lastly, the tourbillon carriage is positioned “above” the movement between two dials, rather than being directly integrated into the movement as with classic tourbillons.Another feature, responsible for the striking visual effect created by the Astrotourbillon movement, is that the balance staff and escapement-wheel staff are not on the same rotational axis as the carriage. They are located to one side of the carriage, in linear alignment with its rotational axis.
This cartier replica watches requires a totally different gear-train design, from the two barrels of the movement through to the display of the minutes and hours.First of all, the carriage has a special rotational axis, for it is positioned at the centre of the movement.