Ladies and Gentlemen, Boys and Girls -
the Grönefeld PARALLAX Tourbillon in Platinum.
Here's the scoop, straight from the source -
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Courtesy of Grönefeld |
Introducing:
AN UNIQUE GRÖNEFELD PARALLAX IN PLATINUM
In October 2014 the
horological brother Bart and Tim Grönefeld were laureated by the international
jury of the Grand Prix d’Horlogerie de Genève. The Parallax Tourbillon was
awarded “best tourbillon” in its class.
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Courtesy of Grönefeld |
The Grönefeld Parallax
Tourbillon features a “flying” tourbillon with a large central seconds hand,
stop seconds, a power reserve- and winding-setting mechanism indicator.
The hand finished movement
displays sophistication and craftsmanship at the very highest level.
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Courtesy of Grönefeld |
FLYING TOURBILLON
Well-designed and
impeccably executed tourbillons are particularly accurate timekeepers.
The flying tourbillon
allows full appreciation of the concentric, rhythmic “breathing” of the balance
hairspring, while ensuring high precision.
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Courtesy of Grönefeld |
Bart and Tim Grönefeld
further highlighted the tourbillon by raising it out of the movement and above
the dial.
As with the immaculately
finished movement bridges, the tourbillon cage is crafted in stainless steel.
Three days are required just for the hand finishing of the tourbillon
components.
LARGE CENTRAL SECONDS
The precision of the
Parallax Tourbillon is evidenced by the large central seconds hand. Normally a
central seconds hand requires a friction spring to prevent small fluttering
caused by play in the gear train.
For the Parallax
Tourbillon, the Grönefeld brothers developed the movement with an added pinion
and wheel so that the energy-sapping friction spring is not required: A feature
improving power transfer to the regulator and contributing to the precision and
impressive power reserve of 72-hours.
PUSH -ONLY CROWN AND FUNCTION INDICATOR
In addition to the flying
tourbillon and friction-spring-free central seconds, the Parallax Tourbillon
has yet another innovative feature: rather than pulling the crown to set the
time, which has the risk of damaging the fragile crown stem, it is pressed.
An indicator on the dial
displays the function selected: “W” for Winding or “S” for time setting. When
the time setting function is selected, both tourbillon cage bridge and the
central seconds hand automatically return to their respective 12 o’clock
positions and stop (or hack) while the time is set.
STAINLESS STEEL BRIDGES
For this unique piece Bart
and Tim Grönefeld made special blackened stainless steel bridges for this
unique movement to enhance the contrast. As well as the superior hardness and
durability of stainless steel compared to standard brass or nickel, the metal
absolutely gleams when polished to a mirror finish. And as stainless steel does
not oxidize, the gleaming finish lasts and lasts.
Technical Specifications for the Grönefeld Parallax Tourbillon
Features and indications
Flying one minute Tourbillon
Hours and minutes
Central seconds
Power reserve and Winding-Setting indicator
Innovative Winding-Setting Mechanism with Hacking
Seconds
In-house caliber G-03
Case and dial
Case material: Platinum Pt950.
Engraving: Grönefeld, Unique Piece and Platinum
Case dimensions: 43 mm x 12.5 mm
Sapphire Crystals: Top domed with anti-reflective
treatment both sides; flat display back with antireflective treatment on both
sides
Water resistance: 3atm/30m/100 feet
Crown: White gold with engraved “G” logo and push to
set/wind function
Dial: Solid Sterling Silver 925, Black ruthenium
plated frosted surface with orange print.
Hours- Minutes dial, power reserve indicator, setting-winding
indicator. Raised seconds dial to minimalize a parallax error
Hands: Polished extended steel Lancette hands. Large
counter poised seconds hand
Strap and buckle: Orange thread hand-sewn matte black
alligator leather and platinum buckle with engraved Grönefeld logo
Movement
Caliber G-03: Mechanical hand winding, flying
one-minute stainless steel tourbillon, power-reserve indicator, hacking seconds
and setting mechanism indicator.
Dimensions: 34mm (15 1/4 ’’’) x 9.5 mm
Number of parts: 278
Number of jewels: 27 jewels set in solid gold chatons
Power reserve: 72 hours
Balance wheel: 10 mm free sprung balance wheel Balance
frequency: 21’600 vph / 3Hz
Balance spring: Phillips terminal over-coil curve,
Geneva-style stud. ELINVAR spring by Nivarox®
Escapement: Straight Swiss lever escapement
Main Plate: Hand spotted rhodium-plated nickel silver
Bridges: Stainless steel and beveled an polished by
hand, micro-blasted, circular grain on the top, relief engraved on micro
blasted surface
Winding-Setting mechanism: Push function crown for selecting
winding or setting
Power reserve mechanism: Classic Breguet style by
means of a cone moving up and down on the threaded barrel arbor
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