Greubel Forsey Double Balancier Convex Launches Two Hearts in One
A dual-balanced super cheap replica watches for outdoor activities.
Stephen Forsey and Robert Greubel first met in the 1990s at complication specialists Renaud & Papi (now Audemars Piguet Renaud & Papi) and found like-minded people in each other (though if you expect to find a lot of like-minded people at APRP, if you are interested in complications). The pair founded their own complications brand, Complitime, in 2001 and 2004, respectively, and launched Greubel Forsey in 2004. The company is known for making incredibly ingenious complications – often variations of the tourbillon, though not the only ones, and other complications – which are also hand-finished to an almost unbelievable degree. Their watches aren't usually anything you'd want to take out for a hike or (God forbid) swimming, but in recent years, the Greubel Forsey Balancier S launched in August 2020, and this year, the company introduced a new version of the Balancier S with a curved case , equipped with double balance wheels, inclined 30º.
The Double Balancier Convex measures 43.50mm x 13.75mm (bezel diameter 46.50mm) like Greubel Forsey's case, but the titanium case and its pronounced curvature should make it more wear-resistant. You'll think from the huge size. It's also water resistant to 100 meters, which means you can actually dive with it if you want (I bet someone will do that sometime in the next few years). The dial side of the cheap watches for sale is where most of the horological action takes place, and if you love fringe mad scientist horological experiments with top haute horlogerie finishing, you'll love the Double Balancier Convex.
Despite its heavy use of ol' razzle-dazzle, the watch is fairly simple in function - there are two hands for the hours and minutes, a subdial for the running seconds display, and a differential for powering The speedometer's four-minute indicator to two balances. There is also a linear power display at the two o'clock position. Two stacked mainspring barrels provide a running time of 72 hours, located under the engraved cover at 11:00, and the differential is located between the two balance wheels.
The basic idea behind the tilted balance is the same as that behind the tourbillon - if the balance is not in a horizontal or vertical plane, the change between positions tends to be smaller because the balance is never in one extreme position or the other Extreme position (one of the earliest uses I know of for a tilted balance was American watchmaker AH Potter, who made a tourbillon with a tilted balance around 1860, surprisingly). Greubel Forsey has also created tilting tourbillons, including the quadruple tourbillon GMT (which, like Potter's design, sets the balance at a 25º angle) but also does interesting work on tilting balances. The ideal angle to eliminate rate changes might be 45º, but this creates a very thick motion. You can work around this to some extent by using a smaller diameter balance, but beyond a certain point this has a detrimental effect on accuracy, so such watches are usually designed around compromises - in the case of the Double Balancier Convex , 30º. Greubel Forsey Double Balancier Convexe SHH Edition
The idea behind using two balances is that even if one is in a perfectly flat or perfectly vertical position, the other will not, and the sum of their ratios will be more precise than using either one alone. The differential transmits energy to the two balances, but since the hands of the watch are driven by the running gear train, it also averages the rates of the two balances and produces a single rate that is displayed by the hands. The balance is free-spring (i.e. no regulator, as it is done via a gold averaging time screw on the balance rim) with a Phillips supercoiled hairspring.
Every surface is finished and very finely finished - for example, screws have chamfered heads and grooves and are polished on top, sides, chamfers and grooves (for individual screws this is Lots of polishing operations) parts). In general, Greubel Forsey combines very traditional finishing techniques with more modern finishes, the classic luster of polished steel and brass complementing the anthracite color of the titanium main plate.Jacob & Co ASTRONOMIA CASINO
It's a very specific approach to fine watchmaking, and price aside, even if you take home a scratch, it's not going to be everyone's favorite. However, I happen to love Greubel Forsey's work, and despite the fact that I'll never have one (barring strange accidents, and extremely unlikely good luck), I'm still glad they're there. Full disclosure, the company loaned me a double tourbillon 30º to wear to SIHH for a year, a few years later, a quad balancer GMT for Baselworld, and besides having a lot of fun wearing them, it's pretty decent They were pleased to see the reaction of the exhausted, well-informed brand president when they spotted my wrist at the meeting.
In recent years (I first met Stephen Forsey at a collectors dinner in New York in 2006), the company has expanded from its origins as a multi-axis tourbillon manufacturer, but they make almost everything It's all still an exploration of the art of fine watchmaking and the science of timekeeping. I'll never forget my conversation with Forsey in 2006 - we sat together and he gave me a two-hour tourbillon masterclass. Finally, when I asked him if it was really worth building such a sophisticated machine to gain a relatively tiny advantage in precision, he smiled and said, "Well, Jack, you know, it's always going to be hard to get these things. Than you There is more to lose." The struggle, Devon Tread 2 Ghost
Greubel Forsey convex double balance: case, 43.50 mm x 13.75 mm (bezel diameter 46.50 mm), titanium, sapphire front and back, engraved, variable geometry bezel, hand-finished; water-resistant to 10 atm/100 m . Titanium Crown
Dial, variable geometry hour circle, lacquered minute circle; variable geometry hour markers and hands, all treated with Super-LumiNova. Engraved and lacquered power reserve indicator.
Movement, 38.70mm x 9.46mm, 374 components, 50 jewels running at 21,600 vph; train jewels olive dome, in golden chatons. Two Philips terminal (overturn) curved balances, variable inertia, gold averaging time screw. The escapement platform is inclined at a 30-degree angle. Two fast-rotating barrels (one revolution in 3.2 hours). Flat black polished steel differential bridge; limited-numbered gold plate engraved. Hours, minutes, small seconds, four-minute spherical constant-difference rotating indicator; one sector of power reserve. discount replica watches