THE RM 50-03 McLAREN F1

THE WORLD’S LIGHTEST TOURBILLON
SPLIT-SECONDS CHRONOGRAPH

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A technical masterpiece offering exceptional mechanical performance, such is the new Richard Mille calibre.

The RM 50-03 Tourbillon Split Seconds Chronograph Ultralight McLaren F1 weighs merely 38 grams, strap included, making it the world’s lightest split-seconds tourbillon chronograph. This achievement is attributable to the use of highly technical materials: not only do titanium and TPT™ Carbon make for an extremely open design, but an entirely new material has been introduced for the case, namely Graph TPT™.

The hollow pushers of the chronograph are recalling the air vents of the Formula 1, while the shape of the crown takes its cue from the wheel rims designed by McLaren.

CASE IN GRAPH TPT™

Drawing on research by the National Graphene Institute of The University of Manchester, our engineers, together with North Thin Ply Technology, were able to sketch out the practical applications on paper and study how they could incorporate Graphene into TPT™ Carbon.
Striking for the undulating striations of its surface, TPT™ Carbon is comprised of parallel filaments—600 layers of them. These layers, whose maximum thickness is 30 microns,
are impregnated with a supercharged resin containing graphene.
They are then compiled by a CNC machine that shifts the orientation of the fibres by 45° between layers.

Technical innovation,
the quest for precision, and perpetual progress comprise the common denominator that links McLaren-Honda F1 and Richard Mille.

EXPLORE THE ANATOMY OF THE RM50-03

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  • CASE MADE OF GRAPH TPT™

    The bezel and caseback feature Graph TPT™, a TPT™ Carbon whose physical properties have been considerably improved by the injection of graphene, a revolutionary nanomaterial six times lighter than steel but 200 times more resistant.

  • TORQUE INDICATOR

    This function indicates the tension of the mainspring and makes it possible to optimise the winding of the watch. Under 53 dNmm, the spring is too slack. At over 65 dNmm, however, the excessive tension could affect the operation of the mechanism, or even damage it.

  • TORQUE-LIMITING CROWN

    This added security system prevents accidental overwinding of the watch, which could result in damage such as snapping the winding stem or putting too much pressure on the barrel spring.

  • FUNCTION INDICATOR

    In a manner similar to a car’s gearbox, the function indicator allows one to identify the winding, neutral and hand setting positions as the crown is pulled out.

  • ULTRALIGHT TOURBILLON CALIBRE MADE OF TITANIUM AND TPT™ CARBON

    The use of highly technical materials such as titanium and TPT™ Carbon combined with highly skeletonised components have resulted in the creation of a calibre weighing only 7 grams that is nonetheless resistant to shocks of up to 5,000 g.

  • A NEW SPLIT-SECONDS SYSTEM

    Studies focused on the work of the split-seconds clamp and the six-column wheel that controls the various rockers of the mechanism have perfected its simultaneity of movement —essential to absolute accuracy—, function lock, and the stability of its settings over time.

MAIN FEATURES

  • Limited edition of 75 pieces in Graph TPT™
  • Calibre RM50-03
  • Manual winding tourbillon movement
  • Power reserve: circa 70 hours (+ 10%)
  • Ultralight tourbillon calibre in titanium and TPT™ carbon
  • New split-seconds system
  • Torque indicator
  • Function indicator
  • Free sprung balance with variable inertia
  • Fast rotating barrel (6 hours per revolution instead of 7.5 hours)
  • Barrel pawl with progressive recoil
  • Teeth of barrel and third wheel pinion with central involute profile
  • Modular hand setting mechanism fitted against the caseback
  • Spline screws for the bridges and case
  • Torque limiting crown
  • Rubber strap injected whit graphene

FINISHING

MOVEMENT

  • Hand-polished bevelling
  • Hand-polished locking-sections
  • Sapphire-microblasted milled sections
  • Lapped and polished contact points
  • Burnished pivots

STEEL PARTS

  • Wire-drawn and microblasted surfaces
  • Hand-polished bevelling

WHEELS

  • Concave chamfering with a diamond tool
  • Circular-decorated front surfaces
  • Gilding (before cutting the teeth)
  • Minimal corrections made to the wheels to preserve their geometry and overall performance

OTHER FEATURES

  • Dimensions of the movement: 31.10 x 32.15 mm
  • Thickness: 9.92 mm
  • Diameter of the tourbillon: 12.40 mm
  • Diameter of the balance: 10 mm
  • Number of jewels: 43
  • Balance wheel: Glucydur, 2 arms and 4 setting screws
  • Moment of inertia 10 mg•cm2, lift angle 53°
  • Frequency: 21,600 vph (3 Hz)
  • Balance spring: elinvar by Nivarox®
  • Shock protection: KIF Elastor KE 160 B28
  • Barrel shaft in nickel-free Chronifer (DIN x 46 Cr 13 + S), with the following properties: stainless - antimagnetic - suitable for tempering

NEW SPLIT-SECONDS CHRONOGRAPH

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