RM 25-01

Manual Winding Tourbillon Chronograph Adventure
RM 25-01 watch cover
RM 25-01

TECHNICITY AT THE SERVICE OF ADVENTURE

An iconic actor of 1980s Hollywood, Sylvester Stallone is a man of many, sometimes contradictory, facets. His persona is serene and endearing, authentic and sincere. He is also an artist, whose deeply personal work is rooted in his passion for great painting and sculpture. He doesn’t cheat. Stallone assumes sole responsibility for his creations. I see that as strength, as powerful.

Developed in collaboration with him, the RM 25-01 Adventure tourbillon chronograph attests a desire on the part of Richard Mille and the artist to conquer the most thoroughly hostile of natural environnements. Truly a horological UFO, this timepiece is, as Sylvester Stallone says, ‘Ready for action’.

RM 25-01 TOURBILLON CHRONOGRAPH ADVENTURE

CALIBRE RM25-01

Manual winding tourbillon movement with 24-hour display, minutes, seconds, chronograph, 30-minute totaliser, power-reserve, torque and function indicators.

Limited edition of 20 pieces

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POWER RESERVE

Circa 72 hours (± 10%), 65 hours with the chronograph running.
Actual power-reserve results will depend on how extensively the chronograph is utilised.

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BASEPLATE AND BRIDGES IN GRADE 5 TITANIUM

Grade 5 titanium is a biocompatible, highly corrosion-resistant and remarkably rigid alloy, which enables the gear train to function effortlessly. The alloy is 90% 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 and bridges have been subjected to intensive and complete validation tests to optimise their resistance capacities.

Basepalte

COMPETITION CHRONOGRAPH MOVEMENT

Richard Mille engineers spent several months of work and research reducing the weight and optimising the calibre, especially the precision of time calculation over the long term.
This has given rise to many innovations, such as the design and manufacturing of several titanium parts, like the levers, which reduce inertia and thus lower energy consumption by 50%. This made it possible to significantly alleviate friction on the axis and eliminate jumps and twitches of the chronograph hand during start or stop of the timer.

COMPETITION CHRONOGRAPH MOVEMENT

AN ULTIMATE PIECE

The RM 25-01 development was especially slow and painstaking, and as an object it is completely in sync with the brand: extreme, designed for extreme conditions, useful, sophisticated and complex, yet unbelievably tough.

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FUNCTION INDICATOR

In a manner similar to a car’s gearbox, the function indicator makes it possible to identify the winding, neutral and hand-setting positions as the crown is pulled out. The active position is indicated via a hand at 4 o’clock that indicates the function as follows: W (Winding) – N (Neutral) – H (Hands).

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RM 25-01

TORQUE INDICATOR

This indicator supplies information about the mainspring’s tension, thus permitting an optimisation of the movement’s chronometric functioning. Below 5.3 N.mm, the spring is considered too slack, while above 6.5 N.mm, excess tension in the spring can adversely affect the mechanism’s operation, or actually endanger it.

POWER-RESERVE INDICATOR

The power-reserve indicator shows the number of hours of energy left in the mainspring before the watch must be wound again.

FREE-SPRUNG BALANCE WITH VARIABLE INERTIA

The free-sprung balance offers better reliability in the event of shocks, movement assembly or disassembly, and also guarantees better chronometric results over time. The regulator index is eliminated, and a more accurate and repeatable calibration is possible thanks to 4 small adjustable weights located directly on the balance.

Variable Geometry Balance Tourbi

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.

Fast

MOVEMENT CHARACTERISTICS

Movement dimensions: 38.95 mm
Thickness: 8.37 mm
Tourbillon diameter: 12.30 mm
Balance wheel diameter: 10.00 mm
Number of jewels: 35
Balance wheel: Glucydur®, with 2 arms and 4 setting screws
Moment of inertia: 11.50 mg.cm2, angle of lift 53°
Frequency: 21,600 vph (3 Hz)
Balance spring: elinvar by Nivarox®
Shock protection: KIF ELASTOR KE 160 B28
Central bridge in titanium
Barrel shaft: nickel-free Chronifer® (DIN x 46 Cr 13 + S), with the following characteristics: stainless – antimagnetic – suitable for tempering

MOVEMENT CHARACTERISTICS

CASE IN CARBON TPT® AND GRADE 5 TITANIUM

Carbon TPT® is an exclusive material with a unique damascene appearance. Its remarkable surface displays extremely regular striations, as Carbon TPT® is composed of many layers of parallel filaments obtained by dividing carbon fibres. These layers, with a maximum thickness of 30 microns, are impregnated with resin, 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, the Carbon TPT® is then ready to be processed on CNC machines at Richard Mille’s parts factory.

The case of the RM 25-01 is water resistant to 100 metres, ensured by two Nitrile O-ring seals. The case is assembled with spline screws in grade 5 titanium and abrasion-resistant washers in 316L stainless steel.

Case

COMPASS

The compass consists of a fixed bezel and a rotating bezel, both crafted in DLC-treated grade 5 titanium, with sapphire glass. It attaches to the case with a bayonet mount. Its cover is made of Carbon TPT®, and includes a mirror with an opening at 12 o’clock that permits greater precision when orientating with the compass needle.

Once removed, the compass can be affixed to a Carbon TPT® baseplate. Ideal for orientation, this arrangement provides a number of indications, including engraved lines showing the direction to head in when following a course with a map.

COMPASS

BIDIRECTIONAL DAYTIME BEZEL

The titanium bezel can be exchanged for a ‘daytime’ bezel should the owner so desire.
This second bezel, in Carbon TPT® and grade 5 titanium, possesses marks for the four cardinal directions in addition to a 360° graduated disk and a 24-hour scale.

BIDIRECTIONAL DAYTIME BEZEL

RM 25-01

SPIRIT LEVEL

The spirit level contained within a titanium bubble makes it possible to hold the watch exactly horizontal to improve accuracy when sighting with the compass needle.

WATER RESISTANT COMPARTMENT

This module, in grade 5 titanium, is hermetically sealed to stash water purification tablets that can make any source of water safe to drink.

TORQUE-LIMITING CROWN

This added security system prevents accidental overwinding of the watch, which can cause damage to the winding stem or place extreme pressure on the barrel spring.

Torque

Finishing

Other features