RESISTING SHOCKS OF UP TO 10,000 G'S
The RM 27-03 reconciles innovations at the level of materials with a testament to horological architecture. The striking red and yellow hues of its Quartz TPT® case pay homage to Rafa’s native Spain, while the upper skeletonised bridge evokes the forward-facing head of a bull. A symbol of Spain, this animal is also Nadal’s chosen emblem.
The main innovation of this extraordinary watch lies in the capacity of its tourbillon calibre to withstand shocks up to 10,000 g’s. This new threshold has been attained thanks to years of R&D and countless hours of tests, particularly ‘pendulum impact testing’ which simulates the linear acceleration that occurs due to sudden movements or shock to the wearer.
RM 27-03 TOURBILLON RAFAEL NADAL
BRIDGES MADE OF 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.
Like the baseplate, the bridges of the calibre RM27-03 were subjected to intensive and comprehensive testing in order to optimise their resistance properties.
FAST-ROTATING BARREL (6 hours per revolution instead of 7.5 hours)
This type of barrel has 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.
FREE-SPRUNG BALANCE WITH VARIABLE INERTIA
A free-sprung balance with variable inertia and a terminal-curve spring better reliability in the event of shocks, movement assembly or disassembly, and guarantees better chronometric results over time.
Movement dimensions: 29.30 x 29.60 mm
Thickness: 7.10 mm
Tourbillon diameter: 12.30 mm
Balance diameter: 10.00 mm
Number of jewels: 19
Balance: Glucydur®, with 2 arms and 4 setting screws, moment of inertia: 11.50 mg•cm2, angle of lift 53°
Frequency: 3 Hz (21,600 vph)
Balance spring: elinvar by Nivarox®
Shock absorbers: Kif Elastor KE 160 B28
Barrel shafts: nickel-free Chronifer® (DIN x 46 Cr13 + S), with the following characteristics: stainless – non-magnetic – suitable for tempering.
The bezel and caseback of the RM 27-03 are made from Quartz TPT®, a groundbreaking material designed and developed by Richard Mille in partnership with North Thin Ply Technology (NTPT®) and made according to the same technique as Carbon TPT® but from silica threads.
The intense burst of colour is achieved by impregnating fine layers of silica just 45 microns thick with tinted resin according to a proprietary process developed in Switzerland that stacks the filaments in layers before heating them. When it comes to releasing a new shade of Quartz TPT®, achieving colour stability compliant with REACH standards while resolving issues of biocompatibility and durability represents a tremendous display of prowess on the part of the engineers at Richard Mille and NTPT®.
The case, which is water-resistant to 50 metres thanks to two Nitrile O-rings, is assembled using 12 spline screws in grade 5 titanium and 316L stainless steel washers.