JLC Mécéquartz

[Sevy1957]

Comme j’ai eu plusieurs remarques (bonne et mauvaises…) et demandes d’infos concernant ma montre avatar, voici quelques infos:

C’est une JLC Master Chronograph Mécaquartz calibre 631

Quoi, quartz

Bon, d’accord, mais regardez la comme elle est belle…

C’est un mouvement "hybride" dit Mécquartz, qui permet à JLC de présenter le chrono le plus plat du marché. (je pense… )

Il existe même un modèle en or jaune avec fond transparent. Preuve que ce mouvement ne doit pas être si vilain à voir.
J’ai pas choisi cette montre (je l’ai reçue en cadeau) mais je l’aime beaucoup, pour son look un peu rétro, sa finesse, son confort, elle est étanche à 5 atm et en plus c’est une Master Control 1000 Hours !

THE MÉCA-QUARTZ MOVEMENT

The PD houses a innovative movement that matches its creative styling. The JLC calibre 631, developed in 1987, should never be mistaken for a mere quartz movement. It is a mechanical chrono module coupled to a quartz movement by ingenious stepper motors. The watch contains 222 mechanical parts and 25 jewels, which is more parts than many automatic watches can boast. This construction reduces the thickness to only 3.7-mm-compare with 6.5 mm, 7.9 mm, and 8.5 mm for the Zenith El Primero, the Valjoux 7750 and the Lemania 5100, respectively. The JLC calibre 631 may very well be the world smallest chrono movement, taking up only one-third the space of a purely mechanical movement. There is a method to this quartz madness: reducing bulkiness, the Achilles’ heel of a mechanical chrono.

Like most quartz watches, the JLC 631 accuracy is not a big point of debate. My PD chrono runs about +1 second per month compared to the US Naval Observatory clock, good enough to time my other watches. Since each JLC movement passes the 1000-hour non-stop test, reliability should not be a problem either. The combination of quartz and mechanical movement leads to a second-hand (at six-o’clock) that jumps a second at a time, and a chrono hand (red center sweep-hand) that glides gracefully like a ballerina on ice.

Pas une "sous montre" donc, n’en déplaise à certains qui n’apprécient pas les mouvements quartz.

Pour en savoir plus:

http://www.qahill.com/tz/mq/mq.html

Porsche Design: http://www.timezone.com/library/archives/archives0036

[Sevy1957]

Pour ceux d’entre nous qui "causent" anglais

Meca-Quartz

Besides the mechanical and quartz movement there is another revolutionary type of movement which is created using the two technologies at the same time. It is so-called parallel technology movement or meca-quartz. The latter represents a quartz movement that includes many mechanical parts. Today the Swiss watch manufacturers create a number of timepieces in which the parallel technology was applied among them being Jaeger Le Coultre with its Caliber 631, which is a movement that uses the electric power of the battery to display the hours, minutes and seconds and at the same time mechanically allows the timepiece to display the chronograph function.

Although the mechanical timepieces are not created mainly to achieve ultimate accuracy, they represent a work of art which was accurately hand-crafted by several people. These watches represent the tradition of watchmaking and the history of mechanical evolution.

Example of a Timepiece with a Meca-Quartz Movement

A full characteristic of a meca-quartz Titanium Porsche Design Moonphase Chronograph is given below in order to understand how it works and what it includes.

The watch was created by the International Watchmaking Company. The timepiece was created in way so it could combine the style of a mechanical watch with the precision timekeeping of a quartz one. The design of the watch is universal and it can be worn at any occasion. The meca-quartz movement of the watch is manufactured by Jaeger LeCoultre.

The case and the bracelet of the watch are made of titanium. The bracelet itself has a safety clasp. You may also find a sapphire crystal on the watch.

The functions of the watch include: a moonphase and 3 subregisters. The timepiece is also six atmospheres water resistant.

The innovative JLC Calibre 631 movement represents a mechanical chrono module combined with a quartz movement with the help of stepper motors.

The watch includes 222 mechanical component parts as well as 25 jewels. This means that the Titanium Porsche Design Moonphase Chronograph has more parts that any other automatic timepiece.

The two applied parallel technologies allowed the construction of the watch to reduce its thickness twice than any other automatic watch. The meca-quartz movement makes the watch so precise that its deviation is only one second per month.

This watch is a perfect example of the breakthrough in the industry of watchmaking.

[Auteur]

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