ONE OF THE MOST COMPLICATED RICHARD MILLE WATCH
RM 039 TOURBILLON CHRONOGRAPH AVIATION
The architecture of this movement enables the coherent and rational arrangement of components. It avoids superfluous superimpositions and features technical solutions that optimise the incorporated functions.
Due to the extreme technical complexity of the RM 039, Richard Mille requested a particularly in-depth examination of its day-to-day use and evolution over time This optimisation process improved the chronograph adjustment sequences for starting, stopping and resetting to zero, as this module is subject to severe constraints due to its dual function. A flyback chronograph module – with a central display for minutes and seconds – not only makes the flyback function possible, but also means that the minute hand can be used for countdown. This also means, however, that even the slightest malfunction of the mechanism must be eliminated to avoid bringing the entire movement to a halt. Nevertheless, this quest to perfect the function sequences of the flyback chronograph has made possible greater margins of error in manipulation
OVERSIZE DATE DISPLAY
Semi-instantaneous, placed in a white-outlined horizontal aperture under 12 o'clock.
The RM 039 Aviation E6-B features the display of a second time zone by means of a red and black hand. This can be easily adjusted using the function selector.
Similar to a car’s gearbox, a push-button located at the centre of the crown makes it possible to select the winding, neutral, hand-setting and UTC-setting functions with a simple push.
A hand at 4 o'clock displays the selected function: W (Winding) – N (Neutral) – H (Hands) – U (UTC, setting the UTC hand).
The power-reserve indicator shows the number of hours of energy left in the mainspring before the watch must be wound again.
Movement diameter: 38.95 mm
Thickness: 8,05 mm
Number of jewels: 58
Balance wheel: Glucydur®, 2 arms and 4 setting screws, moment of inertia 11.50 mg•cm2, angle of lift 53º
Frequency: 21,600 vph (3 Hz)
Balance spring: elinvar by Nivarox®
Shock protection: KIF Elastor KE 160 B28
Barrel shaft: nickel-free Chronifer® (DIN x 46 Cr 13 + S), with the following characteristics: stainless - antimagnetic- suitable for tempering