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Gli Orologi => Orologi e Co... => Topic aperto da: sergino - Aprile 17, 2007, 17:04:52 pm
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Allego come letto:
Double Tourbillon 30 Degree Secret
A well-guarded secret
When introducing their Double Tourbillon 30° at BaselWorld 2004, Inventor Watchmakers Robert Greubel and Stephen Forsey had defined an architectural approach focusing on the visibility of their invention, so as to ensure complete visual access to the double cage and its incredible mechanical choreography.
Dedicated to connoisseurs of Haute Horlogerie with a preference for discretion and for whom observing the mechanism is an intensely personal pleasure, the Double Tourbillon 30° now appears in a less extrovert and one might almost say secretive style, even though such a splendid dial naturally hints at the treasure it is guarding.
This exquisitely crafted matt-finished gold dial suggests the presence of an exceptional mechanism, thanks to its unusual and particularly wide subdial at 6 oclock with a slender blued steel hand testifying to the four-minute rotation of the outer cage of the Double Tourbillon 30°.
The power-reserve is displayed on a sector indicating the full 72 hours of perfect operation provided by rapid-rotating twin barrels. Issued in a strictly limited edition of 11, the Double Tourbillon 30° Secret comes in a white gold case that is entirely polished, apart from the centre band of the case which is delicately straight-grained by hand.
Fortunately however, the secret of this Double Tourbillon 30° is not impenetrable and, although hidden from view on the wrist, the choreographic performance of the cages may nonetheless be admired through the case-back protected by a domed sapphire crystal. The 128 parts making up the first fundamental Greubel Forsey invention weigh a total of 1.17 grams, enabling the variable-inertia balance to oscillate to and fro three times a second, whereas its rotation axis shifts constantly due to the relative speeds of the cages and the 30° angle that links them together.
Technical Specifications
Double Tourbillon 30° Secret
Mechanical hand-wound movement, GF Calibre 02j
Double Tourbillon 30°, Outer Tourbillon 4-minute rotation indicator, Inner Tourbillon 60-second rotation indicator,
power-reserve indicator. Patented DT30° mechanism
Limited edition of 11 pieces
Movement
Movement dimensions
Diameter: 36.4 mm
Thickness: 9.65 mm
Number of parts
Complete movement: 304 parts
Tourbillon cage: 128 parts
Weight of the cage: 1.17 g
Number of jewels 39
Olive-domed jewels in gold chatons
Power reserve 72 hours
Barrels Rapid rotating twin barrels (1 Turn in 3.2 hours) one of which equipped with a slipping spring so as to avoid excess tension
Balance wheel Free sprung balance with white gold mean-time screws (10mm diameter)
Frequency 21600 vibrations/hour
Balance spring
Phillips terminal curve
Geneva-style stud
Main Plates: In nickel silver with fine circular graining centred around the Tourbillon, finished in jade gold
Bridges Hand-Frosted nickel silver, finished in «jade gold»
Gearing Involute circle profile
Conical gearing with corrected profile
Inner Tourbillon
Inclined at a 30° angle, 1 rotation per minute
Outer Tourbillon
1 rotation in 4 minutes
Hand-bevelled and openworked cage pillars
Solid gold counterweight
Displays
Hours and minutes
Small second
4-minute Outer Tourbillon rotation indicator
72-hour power reserve on a sector
Habillage
Case
Gold with convex sapphire crystal. Limited edition of 11 pieces
Transparent back with convex sapphire crystal
Raised engraving of the name of the invention on a hand-punched background
Gold security screws
Polished bezel, centre band with hand-finished straight graining
3 dimensional, variable geometry-shaped lugs
Hand-engraved individual number
Case dimensions
Diameter: 43.5 mm
Thickness: 15.84 mm
Water resistance of the case 3 ATM 30 m 100 ft
Crown Gold with engraved and black lacquered GF logo
Dial Two-part gold dial
Silvered finish
Gold appliques
Gold small seconds and power-reserve sectors
Gold Plate with individual number
Applied gold logo
Hands Hours and minutes, small seconds, power-reserve and 4-minute indicator in flame-blued polished steel
Strap Hand-sewn black or brown alligator leather with gold folding clasp, hand-embossed with the Greubel Forsey initials
Source: Official Greubel Forsey press materials
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data la mia enciclopedica ignoranza ignoravo perfino l'esistenza dei due signori e delle loro creazioni ma devo dire che ne sono favorevolmente impressionato...
li distribuisce barozzi a brescia...ma immagino che non siano prezzi esattamente popolari
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applaus a valanga....dopo la merdate rolex e GP finalmente qualcosa di serio!