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Greubel Forsey | Art of Invention – Double Balancier Convexe: A-Sculpture of Time

Greubel Forsey | Art of Invention – Double Balancier Convexe: A-Sculpture of Time

The foundations are laid and development continues. After unveiling its Balancier Convexe S2, Greubel Forsey continues to establish its new and assertive identity. The Double Balancier Convexe
is its latest expression.

FIFTEEN YEARS IN
THE MAKING

With every invention, Greubel Forsey has added a significant milestone to the history of watchmaking. The Double Balancier, patented in 2007, is one of them. It was first demonstrated in an
EWT (Experimental Watch Technology) prototype, with two superimposed regulating organs inclined at 20°. A second iteration followed soon after, this time in a six piece unique edition with the
two regulating organs positioned in different three-dimensional planes and inclined at 35°.

Finally, in 2016, Greubel Forsey presented the invention in its current, double-patented form: the two balance wheels are dissociated, inclined at 30° and separated by a constant spherical differential which calculates their average timing rate.

TOWARDS A NEW
ÆSTHETIC HORIZON

Today, Greubel Forsey unveils a new timepiece emphasizing the architectural dimension of its 6th invention that is the Double Balancier. The three regulating organs (two balance wheels, one differential) occupy more than half of the dial and provide unprecedented depth. The timepiece is contrasting, highly technical and more
contemporary than ever.

Double Balancier Convexe

AN ARCHITECTURAL
MARVEL

The timepiece gets its name from the convex profile of its 43.5 mm titanium case. It’s plunging lines that hug the curve of the wrist raised significant technical challenges, requiring the
sapphire crystal and above all the movement to adopt to this unique shape.

This new composition showcases its movement spectacularly. The gear train emerges from below the surface of the seemingly semicircular black-treated titanium bridge and extends into
the hour and minute hands which tower above it.

The semicircle itself is rendered asymmetrical by an opening for the barrel cover, central hours and minutes indication, and by an opening which provides space for the small seconds indication below it. The engraved and lacquered minute indexes are nested within the three-dimensional chapter ring, but the polished hour indexes surpass it, plunging deep into the movement.

Double Balancier Convexe

Each hand has its own geometry, finish and color, depending on the role assigned to it. The hour and minute hands take on a curved profile and are filled with Super-Luminova, complementing that of the hour indexes. The small seconds and 4-minute hand indicating the rotational speed of the spherical differential are in polished blued steel while the power reserve is indicated by a polished and openworked hand with a red tip.

A MARVEL OF
HAND FINISHING

In the lower half of the Double Balancier Convexe, each regulating organ is sculpted individually. The two balance wheels, although identical in shape and function, occupy different planes and thus offer a complementary spectacle. The center bridge is in itself a showcase of the creative excellence of Greubel Forsey: multi-level, openworked and black polished with several
interior angles, it carries the hour and minute hands above the movement. The inclined escapement platforms are straight-grained with handpolished beveling and countersinks, while the
differential bridge and balance wheel bridges are flat black polished with further hand-polished beveling.

Every single component is hand finished to Greubel Forsey criteria and thus stands out on its own, and at the same time it contributes to the striking overall æsthetic of this timepiece.

Double Balancier Convexe

A MARVEL OF
CONTEMPORARY DESIGN

The bridges and mainplate of the Double Balancier Convexe are in frosted and black treated titanium. A new font has been adopted for the power reserve and different elements throughout this timepiece. On the barrel cover, we discover relief-engraved text, circular-grained with polished chamfer, describing the properties of the two coaxial barrels in series with rapid rotation (one revolution in 3.2 hours). They drive a 374-part movement, endowed with a 72-hour chronometric power reserve materialized by an openworked hand.

The integrated and profiled lugs reinforce the compact and ergonomic character of this timepiece. They extend onto either a textured rubber strap or titanium bracelet. Last particularity: the
Double Balancier Convexe, like most of the contemporary creations of the Atelier, is now water resistant to 100 meters – a detail that does not mislead on its vocation to be worn daily, in all circumstances.

Double Balancier Convexe

Only 22 Double Balancier Convexe timepieces will be made per year between 2022 and 2024

MOVEMENT
NUMBER OF PARTS
• Movement: 374
NUMBER OF JEWELS
• 50
• Olived-domed jewels in gold chatons
CHRONOMETRIC POWER RESERVE
• 72 hours
FREQUENCY
• 21’600 vibrations/hour
PATENTS PENDING
• Double Balancier
• Hours and minutes
• Small seconds
• 4-minutes spherical constant
differential rotation
• Power-reserve
Double Balancier Convexe
In titanium
Limited edition
Hand-wound movement with 2 patents
Double Balancier • hours and minutes • small seconds
• 4-minutes spherical constant differential rotation • power-reserve

EXTERIOR
CASE
• Titanium with curved synthetic sapphire crystal
• Three-dimensional, variable geometry-shaped bezel,
hand-polished with hand-finished straight graining
• Raised engraving “Double Balancier” and “Greubel Forsey”

CASE DIMENSIONS
• Diameter: 43,50mm (caseband) and 46,50mm (bezel)
• Height: 13,75mm (case) and 14,35mm (synthetic sapphire crystals)
WATER RESISTANCE OF THE CASE
• Water-resistant 10atm – 100m – 328ft

DIAL SIDE
• Three-dimensional, variable geometry hour-ring with engraved
and lacquered minute-circle, black treatment
• Power-reserve indicator, engraved and lacquered

STRAP AND CLASP
• Non-animal material, rubber with texture in relief, titanium
folding clasp, engraved GF logo
• On demand:
3-row metal bracelet in titanium, folding clasp with
integrated fine adjustment, engraved GF logo
Tfor a total of 66 pieces overall.

 

 

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Greubel Forsey – Balancier Contemporain con nueva caja de oro rojo

Nueva caja de oro rojo para el Balancier Contemporain

Greubel Forsey abrió un nuevo capítulo en su historia con la presentación en 2019 del Balancier Contemporain, con unas dimensiones particularmente modestas: 39,6mm de diámetro, algo innovador para un reloj Greubel Forsey.

En un volumen reducido, el Balancier Contemporain encarna todos los códigos del universo de Greubel Forsey y explora con enorme detalle las tres dimensiones, sin comprometer nunca el rendimiento cronométrico: una verdadera proeza. Tras la versión en oro blanco, se presenta ahora con una nueva caja de oro rojo 5N y una esfera multinivel llena de contrastes que destaca la singularidad de cada una de estas estructuras.

Compuesto por 255 piezas, todas ellas fabricadas y acabadas con el espíritu artesanal de Greubel Forsey, el Balancier Contemporain representa un verdadero desafío arquitectónico. La construcción del movimiento se ha rediseñado completamente para reducir sus dimensiones, con la dificultad no solo de albergar el gran volante en un volumen compacto, sino también principalmente de lograr una creación armoniosa de proporciones óptimas, realizada prestando extrema atención a cada detalle. El Balancier Contemporain de oro rojo 5N juega así con las diferencias de niveles, materiales, volúmenes y acabados, y plasma a la perfección el universo de Greubel Forsey.

Un volante majestuoso, garantía de estabilidad y rendimiento

A las 06:00, captura la atención el gran volante, completamente desarrollado y fabricado en los talleres de Greubel Forsey. Su impresionante diámetro de 12,6mm le proporciona una estabilidad óptima. Se refleja en el telón de fondo de un puente negro pulido que da una impresión de gran profundidad del movimiento. El órgano regulador está equipado con una función de «freno del volante» que puede activarse tirando de la corona. Los seis tornillos de ajuste de oro se han colocado dentro de la parte lisa del volante para permitir un ajuste fino y limitar de este modo la fricción con el aire y las alteraciones que de ella derivan. El resultado es un mejor rendimiento cronométrico y un fácil ajuste.

El universo de Greubel Forsey en una caja de modestas dimensiones

Con un diámetro de tan solo 39,6mm y un grosor de 12,21mm, el Balancier Contemporain se caracteriza por su tamaño, ya que Greubel Forsey suele producir relojes de mayor diámetro. La emblemática caja de oro rojo se prolonga gracias a las asas de perfil tridimensional que forman sutiles y elegantes curvas sesgadas. Estos volúmenes originales destacan gracias a la alternancia de acabados : bisel y asas totalmente pulidos, lado de la carrura y fondo satinado. Sobre el bisel, el cristal de zafiro abovedado proporciona profundidad al movimiento. Por debajo, la arquitectura tridimensional de la esfera multinivel, realizada en los talleres, destaca cada una de las indicaciones.

Un viaje arquitectónico

Con tan solo mirarlo, el Balancier Contemporain nos transporta en un viaje arquitectónico escenificado en varios niveles. En primer lugar, con un largo puente pulido a mano sobre el que reina el volante majestuosamente a las 06:00. Por encima, un segundo puente graneado y biselado muestra el barrilete dorado con el grabado de Greubel Forsey. A las 08:30, en un plano ligeramente más elevado, gira el pequeño segundero y, dos niveles más arriba, se encuentra un puente de grano fino sobre el que se sitúa la indicación de reserva de energía de 72 horas, movida por una delgada aguja de acero azulado. Más a la derecha, a las 02:00, el contraste de colores resalta las indicaciones horarias, mientras que la presencia descentrada del disco horario/minutero destaca gracias al color gris antracita del contorno. Las horas y los minutos están posicionadas en un puente elevado en forma de trípode y están indicados por dos agujas de acero azulado con molduras y un plato pulidos a mano. El viaje por la superficie de la esfera termina con una abertura en la cima que revela el gran volante más abajo, fijado a la parte superior por un puente delgado, cuidadosamente biselado y «pulido en negro».

Una obra de arte oculta a la vista

En el dorso de esta creación subyace una obra de arte realizada con la maestría de los acabados artesanales de los relojes de Greubel Forsey. En la parte central aparece una placa circular de oro rojo grabada. A su alrededor se sitúa un puente de oro blanco en el que es posible descubrir los valores de los fundadores en palabras grabadas en relieve y posteriormente pulidas en negro, así como rubíes engastados en chatones de oro.

El Balancier Contemporain de oro rojo 5N nos sumerge en un emocionante viaje arquitectónico en el que podemos encontrar el enfoque tridimensional en todos los niveles. Todas estas excepcionales arquitecturas están realizadas cuidando al máximo los detalles y con una magistral artesanía en los acabados. El Balancier Contemporain, único por sus dimensiones, es un concentrado de conocimientos que ilustra todo el universo de Greubel Forsey.

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GREUBEL FORSEY – BALANCIER S

GREUBEL FORSEY – BALANCIER S

Timepiece with four hands • hours and minutes • small seconds • power-reserve • 30° inclined GREUBEL FORSEY balance wheel system

This creation combines fully – and visibly –sport and chronometry. Circular from above, its case reveals the unique arched ovoid shape from other angles, and its slim profile reinforces its dynamic new momentum

The oval, arched sapphire crystal follows the curvature of the case. The perfect osmosis between the case and the movement is emphasized, technically and visually, by a daring double suspended arched bridge holding an inclined gear train and curved central hour and minute hands. These striking elements integrate and extend over the inclined balance wheel giving the timepiece its powerful identity, but also assuring its outstanding chronometric performance

The large inclined balance wheel at 7 o’clock stands out. Entirely developed and made within the Greubel Forsey Atelier, this balance wheel is distinguished by its oversized 12.6 mm diameter, ensuring excellent timekeeping performance. Its 30° angle provides this timepiece with excellent chronometric performance and is prominently visible in action thanks to the unique movement architecture

Balancier S

The exceptional chronometry of this creation is combined with an unequivocally sporty case. Made of titanium and water resistant to 100 metres, its powerful case shape is distinguished by its lightness and comfort on the wrist. Its robustness protects the movement’s reliability and chronometric performance at all times