Greubel Forsey Différentiel d'Égalité
Différentiel d'Égalité is one of the latest results of Greubel Forsey's experimental watch technology program.replica Greubel Forsey Double Balancier
Greubel Forsey, maker of some of the most exotic high-end watches on the planet, has had some sort of in-house R&D department for years. The latest introduction to the experimental watch technology program is a technological evolution first proposed in 2009: a form of constant-force device that takes the remontoire d'égalité as its starting point.
Why this watch matters
Différentiel d'Égalité is an example of a specific horological experimental tradition: the study of a way to transmit unchanging energy to the escapement. The edge, the first known escapement, was very sensitive to changes in power and was often paired with earlier constant force devices such as the fusee or stackfreed. The more complicated but more complicated remontoire is another example, and this variation of the device is one of the most interesting mechanisms in timepieces.Swiss replica watches
initial thought
The mainspring of a watch is like the mainspring of a clockwork toy. As the spring loosens, it provides less and less power. In a clockwork toy car, the car travels at a slower speed; in a watch, the arc of the balance wheel turns smaller and smaller. Theoretically, the balance and hairspring are isochronous - that is, the size of the arc should not have an effect - but since no actual watch can achieve the perfect performance of a theoretical system, a healthy and stable balance amplitude is still modern Tabulation goals.
The remontoire solves this problem by placing a secondary, small mainspring on one wheel of the gear train. This secondary spring is much weaker than the mainspring, which is wound periodically. The first remontoire in a watch was invented by John Harrison, a renowned British observatory manufacturer, who used it in his second experimental sea clock, the H2. The remontoire in his fourth marine clock, the H4 (often considered the first successful marine chronometer, and tested at sea in 1761 with astonishing results) rewinds every 7.5 seconds.best replica watches
The remontoire is an ingenious, refined and demanding mechanism, but it does have one objection, which is that it still doesn't deliver perfectly even torque. This is where Différentiel d'Égalité comes in.
Différentiel d'Égalité contains a mechanism that, as Stephen Forsey described it to me, "belongs to the class of remontoire", but it does something that traditional remontoire (if there is one) doesn't: it provides the escapement The mechanism and balance wheel provide perfectly even energy. To this end, Greubel Forsey developed a differential system that receives one energy input from the gear train, but has two output paths. The remontoire spring rewinds once per second; an output path to the jumping seconds hand, whose movement reflects a one-second rewind interval (FP Journe Tourbillon Souverain is another example of a watch with one-second remontoire-dependent jumping seconds or no beating second hand).
The other output path powers the escapement and balance; on this output path is a smaller traditional seconds display that advances by one increment for each escape wheel tooth (in other words, its work The principle is like the second hand in a traditional watch). You can see the remontoir springs and differential partially exposed in the center of the dial.Jacob & Co. ASTRONOMIA CASINO AT160.40.AB.AB.B
Différentiel d'Égalité's finishes, front and back, are as flawless as we've come to expect from Greubel Forsey (well, nothing is perfect, but if anything that exists is in the nuances, it could be A Greubel Forsey watch, judging by the quality of the finish).
I think it's a really cool watch. Few companies have trouble with remontoire, because from a practical point of view, it generally does not offer much benefit - modern lever escapement watches with modern alloy hairsprings are well constructed and well adjusted, and are more horological than horological The watch was invented in the era of the remontoire. However, Greubel Forsey's horological experiments - the 24-second tourbillon, the inclined tourbillon, the inclined balance (such as found in the Différentiel d'Égalité were all about exploring the most extreme improvements in mechanical timepieces. (It's worth noting that these experiments were performed without relying on silicon.) In a system that is already very accurate in my mind, the dramatic improvement in performance makes some sense, if you're thinking something like that , Différentiel d'Égalité is the watch you won't want to miss. Hope to get more specific information on how the differential works in the near future.Audemars Piguet Royal Oak Frosted Gold
Base
Brand: Greubel Forsey
Model: Différentiel d'Égalité
Diameter: 44 mm
Thickness: 15.3 mm
Case material: white gold
Dial: Multi-stage; synthetic sapphire indexes
Markers: Lacquered electro-grown hour-markers; engraved and lacquered minutes and seconds without jumping
Lume: hour and minute hands
Water resistance: 3 atmospheres / 30 meters
Strap/Bracelet: Hand-stitched alligator leather with white gold folding clasp
sports
Functions: hours, minutes, walking seconds, jumping seconds/jumping seconds
Diameter: 36.4 mm
Thickness: 9.99mm Power Reserve
: 60-hour winding: Manual winding
: Manual
Frequency: 21,600 times/hour
Jewelry: 47
Additional details: Equipped with spherical constant force différentiel d'egalité; remontoire spring wound every second with 24 parts and 3 satellites. 30º inclined, fixed escapement, black polished balance bridge. Nickel/Deutsche Silver Main Plate; Nickel Silver Bridges, Black Polished Gold Plate and Round Polished Gold Plate.
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