‘We in Finland are known for our “guts” and determination. We even have a word for it – "sisu". We have it in our stomachs. It’s what gets us past the finishing line, despite the odds. In my sport, however, sisu is not enough. I have to rely on high-performance technology and team-work – the kind I’ve come to appreciate since joining the Alfa Romeo Racing Team. Most of all, though, there has to be sheer passion! Richard Mille has powered his own engine for years with all three of these,– guts, technological prowess and above all fun. That’s why I am more than happy to be at the wheel with the ground-breaking RM 50-04 on my wrist.’
RM 50-04 TOURBILLON CHRONOGRAPH KIMI RÄIKKÖNEN
The power-reserve indicator shows the number of hours of energy left in the mainspring before the watch must be wound again.
This indicator supplies information about the mainspring’s tension, 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.
WINDING-BARREL TEETH AND THIRD-WHEEL PINION WITH CENTRAL INVOLUTE PROFILE
The central involute profile of the winding-barrel teeth provides an optimal pressure angle of 20°, which promotes effective rotary motion and compensates for possible variations in the operation of the going train. This, in turn, ensures excellent torque transmission and a distinct improvement in performance.
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.
Movement dimensions: 31.10 x 32.15 mm
Thickness: 10.02 mm
Tourbillon diameter: 12.40 mm
Balance wheel diameter: 10.00 mm
Number of jewels: 43
Balance wheel: Glucydur®, 2 arms, 4 setting screws, moment of inertia 10 mg•cm2, angle of lift 53°
Frequency: 21,600 vph (3 Hz)
Balance spring: elinvar by Nivarox®
Shock protection: KIF Elastor KE 160 B28
Barrel shaft: nickel-free Chronifer® (DIN x 46 Cr 13 + S) with the following characteristics: stainless – antimagnetic - suitable for tempering