Based on the form of a teardrop, the most aerodynamically efficient shape found in nature, the Speedtail is the apotheosis of the streamlined hypercar, a three-seat grand tourer that became the third car in McLaren's Utimate line-up.
With its 1,070-horsepower hybrid powertrain, the Speedtail covers 112 metres per second when travelling at its top speed of 250mph/402kph, making it the fastest McLaren road car to date. McLaren's relentless pursuit of aerodynamic efficiency provided the starting point for the design of the RM 40-01 Automatic Tourbillon McLaren Speedtail.
RM 40-01 AUTOMATIC TOURBILLON McLAREN SPEEDTAIL
A BESPOKE AND UNPRECEDENTED MOVEMENT
Despite the extraordinary anatomy of the case, Salvador Arbona, Richard Mille's Movement Technical Director, created a horological 'engine' that seamlessly occupies all the available space and introduces a level of mechanical sophistication that makes the RM 40-01 an appropriately extraordinary companion to the Speedtail.
Grade 5 titanium has been used for key components such as the bridges, the bridge screws, the baseplate and the rotor core. The CRMT4 calibre that drives the RM 40-01 introduces the first in-house development for a power reserve display as well as the oversize date and function selector complications. All of which are firsts at Richard Mille on an in-house tourbillon.
The entirely new movement architecture demanded a remarkable 8,600 hours of development, much of which went into finalising the extreme level of detail. The complexity of the components, the multitude of details and, above all, the attention applied to the finishes place the RM 40-01 firmly at the peak of Swiss-made watches.
OVERSIZE DATE DISPLAY
Semi-instantaneous, horizontally placed under 12 o’clock, functioning via two skeletonised calendar discs over a white field.
The date can be easily corrected via the pusher located at 8 o’clock.
A pusher situated at 4 o’clock allows one to select the neutral, winding and hand-setting functions with a simple push in a manner similar to a car’s gearbox.
An aperture located at 3 o’clock shows the function selected:
N (Neutral) - W (Winding) - H (Hand Setting).
FREE-SPRUNG BALANCE WITH VARIABLE INERTIA
This type of balance wheel represents the ultimate in innovation. It guarantees greater reliability when subjected to shocks and during movement assembly or disassembly, hence better chronometric results over time. The regulator index is eliminated, and a more accurate and repeatable calibration is possible thanks to four small, adjustable weights located directly on the balance.
- Movement dimensions: 30.48mm x 35.35 mm
- Thickness: 6.81 mm
- Number of jewels: 37
- Balance: CuBe, 4 arms, 4 adjustable weights, moment of inertia of 7.5 mg.cm2, 50° angle of lift
- Frequency: 28,800 vph (4 Hz)
- Balance spring: AK 3
- Shock protection: INCABLOC 908.22.211.100 (transparent)
FROM HYPERCAR TO HYPER WATCH
It took Richard Mille's casing department, led by Technical Director Julien Boillat, an unprecedented 2,800 hours spread over 18 months to perfect the lines. Like the Speedtail on which its based, the watch’s lines mimic the form of a water droplet while bezel indentations evoke the bonnet openings, and pushers that recall the air outlets behind the front wheels.
The RM 40-01 has one of the highest levels of finishing ever executed at Richard Mille. There has been a lot of development with our anglers and polishers. The attention to detail is extreme, with mirror polished, plain and satinised effects in different areas and the combined use of titanium and Carbon TPT®. The case itself is made from 69 individual parts.
Due to the unprecedented complexity of the design, five prototypes were created before the optimum shape was achieved. The challenge lay in the fact that the case is significantly wider at 12 o'clock than at 6 o'clock, with a further taper between the titanium bezel and case back, which are separated by a caseband made from Carbon TPT® and unequal length titanium pillars.