RM 30-01
RM 30-01
A true synthesis of the identity of its collections, the RM 30-01 stays true to Richard Mille’s key values: ergonomics, pure lines and exceptional finishes. The RM 30-01 Automatic with Declutchable Rotor epitomises not only the quintessence of the brand, but also the many aesthetic adventures experienced by Richard Mille for over twenty years.
CONTROLLED ENERGY
CALIBRE RMAR2
Skeletonised automatic-winding movement with hours, minutes, seconds, oversize date, clutch engagement and power-reserve indicators, function selector and declutchable variable-geometry rotor.
POWER RESERVE
Around 55 hours (± 10%)
BASEPLATE AND BRIDGES IN GRADE 5 TITANIUM
The baseplate and the bridges are crafted of grade 5 titanium, a biocompatible, highly corrosion-resistant and remarkably rigid alloy, which enables the gear train to function effortlessly.
The alloy is 90% grade 5 titanium, 6% aluminium and 4% vanadium. This combination further increases the material’s mechanical properties, which explains its frequent use in the aerospace, aeronautics and automobile industries. The baseplate of the RMAR1 calibre has been optimised to achieve an extremely low weight/resistance ratio.
The skeletonised baseplate and bridges were subjected to separate and extensive validation tests to ensure they met rigorous strength requirements.
PATENTED DECLUTCHABLE VARIABLE-GEOMETRY ROTOR
The winding of an automatic wristwatch is accomplished by a small rotor that revolves when moved. Its cyclical movement provides energy to the winding barrel, which reaches its optimal tension once it is fully wound. After this point, excess tension due to overwinding can easily occur and must be avoided.
This is traditionally achieved using a sliding flange that allows the spring to slip, preventing the movement from becoming overwound.
However, this traditional system allows harmful debris to build up inside, as the flange brakes on the winding barrel’s interior overextended periods, especially when a person is particularly active.
To avoid such adverse conditions, Richard Mille’s exclusive declutchable rotor automatically disconnects from the winding barrel at the moment when the spring is fully wound. When the power reserve reaches 55 hours, the rotor is declutched automatically thanks to a specially developed gear system. As a result, the rotor is disengaged from winding the barrel.Conversely, when the power reserve decreases to 40 hours, the rotor is automatically clutched, and the watch starts another winding phase until the indicator reaches 55 hours. This solution allows both the movement and the oscillator to operate at the best ratio of constant torque/power providing optimal chronometric performance.
It is possible to check on these phases thanks to the clutch engagement indicator located at the upper-left corner, which keeps the user informed whether the rotor is operating in winding phase (on) or is disengaged (off).
Typical of Richard Mille, the declutchable rotor is a major innovation in both its conception and miniaturisation, which represents an extraordinary technical challenge in and of itself.
ROTOR SPECIFICATIONS
• Central flange in grade 5 titanium
• Heavy metal weight segment
• 18K white gold wings with 5 possible positions adjusted by screws in grade 5 titanium
• Ceramic ball bearings
• Unidirectional anti-clockwise winding
OVERSIZE DATE DISPLAY
Semi-instantaneous, placed in a horizontal aperture at 4 o’clock.
FUNCTION SELECTOR
In a manner similar to a car’s gearbox, a push-button located at 2 o’clock allows one to select the winding, date setting and hand setting functions with a simple push. A hand at 3 o’clock displays the selected function.
MOVEMENT CHARACTERISTICS
31.25 x 29.45 mm
5.41 mm
38
AP 20 steel
Glucydur®, 4 arms, 4 setting weights, moment of inertia 4.8 mg•cm2, angle of lift 53°
28,800 vph (4 Hz)
elinvar by Nivarox®
INCABLOC 908.22.211.100 (transparent)
Rubifix (transparent)
CASE
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, in the manner of the analytical engineering methods used in the design of Formula 1 racing cars, where the chassis and the engine are developed in complete harmony. For example, a casing ring is no longer used, and the movement is mounted on chassis mounting rubbers (ISO SW) fixed by grade 5 titanium screws. Features such as these provide evidence of uncompromising workmanship.
The taut lines and complex geometry of this case make it one of the most difficult to develop and produce in the entire watchmaking industry. The RM 30-01 inherits the artistic and technical options that have been developed with such rigour by Richard Mille.
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.
VARIATIONS
RM 30-01 - Black ceramic
Other features
FINISHING
• Baseplate and bridges in hand-ground grade 5 titanium, wet sandblasted, Titalyt® treated
• Barrel bridges PVD coated
• Burnished pivots
• Pinions with undercuts
• Sapphire blasted and hand-drawn surfaces
• Screw slots and screws bevelled and polished with rounded and polished tip
• Anglage and polishing by hand
• Sandblasted and rhodium plated, bevelled wheels (before cutting the teeth)
• Minimal corrections applied to the wheels in order to preserve geometry and performance
