RM 21-02

Manual Winding Tourbillon Aerodyne
Introduction

A FLIGHTWORTHY INSTRUMENT

Precision, lightness and resistance are intimately bound by materials and architectural constructions. We have always capitalized on engineering materials from fields way beyond watchmaking. These new and technical materials are recognized today in Haute Horlogerie for their aesthetic and their mechanical properties.
The RM 21-02 Tourbillon Aerodyne has set the highest limits for watchmaking both in terms of its design, mechanical inventiveness and use of materials.

RM 21-02

Toughness to spare

We were intent on achieving extreme lightness on the RM 21-02 and we succeeded in constructing it on a honeycomb structure. The objective was to juxtapose and laser-weld each tiny cell. This achievement on such a microscopic scale is a major technical tour-de-force.

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RM 21-02 Manual Winding Tourbillon Aerodyne

CALIBRE RM21-02

Manual winding tourbillon movement with hours, minutes, function selector, power-reserve and torque indicators.



Limited edition of 50 pieces

23calibre21021BQ

POWER RESERVE

Around 70 hours (± 10%).

23PR7021021BQ

BASEPLATE IN HONEYCOMBED ORTHORHOMBIC HAYNES®214® WITH CARBON TPT® CORE

HAYNES® 214® is a nickel-chromium-aluminium-iron alloy, designed to provide the optimum in high-temperature oxidation resistance for a wrought austenitic material, while at the same time allowing conventional forming and joining. Intended principally for use at temperatures of 955°C and above, 214® alloy exhibits resistance to oxidation that far exceeds that of virtually all conventional heat-resistant wrought alloys at these temperatures.

Combined with a Carbon TPT® core, the honeycombed geometrical pattern of HAYNES® 214® offers unparalleled stiffness, a low thermal expansion coefficient and exceptional torsion resistance.

baseplateRM21-01_Clup5_NBoon_WB

FUNCTION SELECTOR

In a manner similar to a car’s gearbox, a push-button located at the centre of the crown makes it possible to select the winding, neutral and hand-setting functions with a simple push. A hand at 4 o’clock indicates the selected function.

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MOVEMENT CHARACTERISTICS

Movement dimensions: 30.20 x 29.20 mm
Thickness: 7.14 mm
Tourbillon diameter: 12.30 mm
Balance wheel diameter: 10.00 mm
Number of jewels: 27
Balance: Glucydur®, 2 arms, 4 setting screws, moment of inertia 10 mg•cm2, angle of lift 53°
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

23RM21_02_5H-BBBQ

CASE MADE OF QUARTZ TPT®, CARBON TPT® AND TITANIUM

From the case and dial to each piece of the movement, the design and execution of the watch demonstrate a holistic approach to conception of the movement, case and dial.
As a result, everything has been constructed according to extremely rigorous specifications. The casing ring is eliminated, and the movement is fixed to the chassis with four grade 5 titanium screws and silent blocks (ISO SW).

The case is made of titanium, Carbon TPT® and Quartz TPT®, two exclusive materials with unique appearances. Their remarkable surfaces display extremely regular undulations, as they are composed of multiple layers of parallel filaments obtained by dividing carbon fiber or silica threads. These layers, with a maximum thickness of 45 microns, are impregnated with matrices then woven on a special machine that modifies the direction of the weft by 45° between layers. Heated to 120°C at a pressure of 6 bars, these materials are then ready to be processed on a CNC machine in Richard Mille’s case factory.

The tripartite case is water resistant to 50 metres, ensured by 2 Nitrile O-ring seals. The case is assembled with 20 spline screws in grade 5 titanium and abrasion-resistant washers in 316L stainless steel.

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Finishing

Movement

• Anglage and polishing by hand
• Hand-polished locking sections
• Sapphire-blasted milled sections
• Lapped and polished contact points
• Burnished pivots

Steel parts

• Sapphire-blasted surfaces
• Hand-polished anglage

Wheels

• Concave chamfering with a diamond tool
• Circular-finished faces
• Rhodium-plating (before cutting the teeth)
• Minimal corrections applied to the wheels in order to preserve geometry and performance.

Other features

FAST-ROTATING BARREL (6 hours per revolution instead of 7.5 hours)

This type of barrel provides the following advantages:
• The phenomenon of periodic internal mainspring adhesion is significantly diminished, thereby increasing performance.
• Provision of an excellent mainspring delta curve with an ideal power reserve/performance and regularity ratio.

WHEEL-BASED TIME-SETTING SYSTEM

It provides smooth time-setting functions by eliminating engaging friction, replacing it with rolling friction.

SPLINE SCREWS IN GRADE 5 TITANIUM FOR THE BRIDGES AND CASE

This permits better control of the torque applied to screws during assembly. These screws are therefore unaffected by physical manipulation during assembly or disassembly and age well.

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