RM 65-01 AUTOMATIC
AUTOMATIC WINDING SPLIT-SECONDS CHRONOGRAPH
OUR MOST COMPLICATED AUTOMATIC CALIBRE
the new RM 65-01.
The culmination of some five years of development, this automatic split-seconds chronograph is the most complex timepiece ever to leave the Richard Mille workshops. This model fully embodies the brand’s technical approach thanks to the combination of several additional functions, a very specific architecture and an extremely high-end aesthetic. All in all, a fabulous challenge of mechanical watchmaking that called for patience, technicity and utter perseverance.
Skeletonised automatic winding movement with hours, minutes, seconds at 6 o’clock, date, split-seconds chronograph with 30-minute counter at 3 o’clock, 12-hour counter at 9 o’clock, function selector, rapid winding and variable-geometry rotor.
Actual power reserve results will depend on how much the chronograph features are utilised.
BASEPLATE AND BRIDGES MADE OF GRADE 5 TITANIUM
The skeletonised baseplate and the bridges were subjected to intensive and complete validation tests to optimise their resistance capacities.
The RMAC4 calibre is equipped with the latest-generation split-seconds mechanism developed by the engineers at Richard Mille. The 6-column wheel ensures optimised simultaneous movement, maximal function locking, and greater adjustment durability.
The chronograph was also subject to a battery of merciless tests to demonstrate its correct function in any situation, from shock and drop simulations to accelerated 10-year ageing phases for all its functions, to waterproof tests and magnetic field resistance trials.
RAPID WINDING MECHNISM
This highly practical function, described as ‘very playful’ by Richard Mille’s engineers, was particularly difficult to develop because of its high levels of torque transfer. During the ageing tests, the function was activated thousands of times.
HIGH FREQUENCY BALANCE WITH VARIABLE INTERTIA
The regulator index is eliminated, and a more accurate and repeatable adjustment is possible thanks to 4 small, adjustable weights located directly on the balance.
This exclusive Richard Mille design makes it possible to effectively adapt rewinding of the mainspring to the user’s activity level, in sporting or non-sporting environments.
By adjusting the 3-position weight, the rotor’s inertia is modified to either speed up the winding process in the case of leisurely arm movements, or to slow it down during sporting activities. This invention allows the movement’s winding mechanism to be optimised and personalised to the owner’s lifestyle.
Thickness: 8.69 mm
Balance: Glucydur®, 4 arms, moment of inertia 7.5 mg•cm2, angle of lift 53°
Frequency: 36,000 vph (5 Hz)
Balance spring: AK3
Index assembly: Triovis n° 2
CASE IN CARBON TPT ® AND ORANGE QUARTZ TPT ®
Carbon TPT® is almost indestructible and possesses exceptional physical properties that make possible a lighter case offering ideal shock protection.
Carbon TPT® consists of over 600 layers of parallel filaments obtained by separating carbon threads. With a maximum thickness of 30 microns, the Carbon TPT® layers are saturated with matrix, then compiled on a special machine that modifies the orientation of the fibres between each layer by 45°. Once it has been heated to 120°C and subjected to a pressure of 6 bars, the Carbon TPT® is machined at Richard Mille’s factory.
Carbon TPT® is renowned for its excellent resistance to micro-cracks and splits.
The complete case construction is water-resistant to 50 metres thanks to two Nitrile O-ring seals and is assembled using 20 spline screws in grade 5 titanium and 316L stainless steel washers.
• Anglage and polishing by hand
• Hand-polished locking sections
• Burnished pivots
• Diamond-polished sinks
• Pinions with undercuts
• Sandblasted and rhodium-plated, bevelled wheels
• Anglage and polishing by hand
• Screw slot and screws bevelled and polished with rounded and polished tip
• Circular-decorated faces
• Rhodium plating (before cutting the teeth)
• Minimal corrections applied to the wheels in order to preserve geometry and performance
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.
- Bezel side: In sapphire (1,800 Vickers) with anti-glare treatment (both sides).
- Thickness: 1.50 mm
- Caseback: In sapphire with anti-glare treatment (both sides).
- Thickness: 1.20 mm at the centre; outer edges 2.04 mm
- This permits better control of the torque applied to screws during assembly. These screws are unaffected by physical manipulation during assembly or disassembly and age well