RM 004
RM 004
RM 004

Men's collection

RM 004

SPLIT SECONDS CHRONOGRAPH - FELIPE MASSA

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MORE THAN FIVE YEARS OF DEVELOPMENT PERFECTION

One of the most complicated timepieces ever released in the watchmaking industry. Our aim was to tackle the drawbacks of traditional chronographs, reducing the jump of the hand at the start of timing, for example. We achieved this by reworking the entire gear train to reduce inertia. Instant locking of the split-seconds hand was obtained by achieving extreme precision of clearance in the pincers, thus stopping the wheel on both sides simultaneously. We also concentrated on ensuring the ease of operation of this complex model, and on optimising its performance in various ways. We incorporated a torque sensor to guarantee optimum winding, with a hand showing the zone of ideal spring tension, like the revolutions counter on a sports car. We also added a function indicator to show whether the watch is in Winding, Handsetting or Neutral mode. The complexity of this model is the consequence of perfecting all these functions simultaneously.

Main characteristics

The RM 004 Felipe Massa has a baseplate in carbon nanofibre, split second chronograph and bears the colours of the Brazilian flag on its inner bezel and a red crown.
Limited edition of 25 pieces in red gold, 10 in white gold and 5 in titanium.

01
CALIBER RM 004-V2
Manual winding movement with hours, minutes, chronograph, split seconds, power reserve, torque indicator, function indicator.

TORQUE INDICATOR Shows the mainspring’s tension: below 53 dNmm, the spring is too slack; at the other extreme, above 65 dNmm, excessive tension can adversely affect the running of the movement and may even cause damage.

02
CALIBER RM 004-V2
Manual winding movement with hours, minutes, chronograph, split seconds, power reserve, torque indicator, function indicator.

POWER RESERVE Circa 50 hours Numerical indications to the left of the barrel.

03
CALIBER RM 004-V2
Manual winding movement with hours, minutes, chronograph, split seconds, power reserve, torque indicator, function indicator.

FUNCTION INDICATOR In a manner similar to a car's gearbox, the function indicator allows one to see the winding, neutral and hand setting positions as the crown is pulled out. Each position is indicated via a hand at 4 o’clock displaying the following functions: W(Winding) – N(Neutral) – H(Hands).

04
CALIBER RM 004-V2
Manual winding movement with hours, minutes, chronograph, split seconds, power reserve, torque indicator, function indicator.

CALIBER RM 004-V2 Manual winding movement with hours, minutes, chronograph, split seconds, power reserve, torque indicator, function indicator.

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Approximate scale 1 : 1

Main characteristics

The RM 004 Felipe Massa has a baseplate in carbon nanofibre, split second chronograph and bears the colours of the Brazilian flag on its inner bezel and a red crown.
Limited edition of 25 pieces in red gold, 10 in white gold and 5 in titanium.

CHRONOGRAPH (Column wheel in titanium)

The modern architecture of this movement has allowed for the consistent and rational arrangement of its constituent parts, avoiding unnecessary superimpositions and permitting the best possible use of the functions with technical solutions. For example, research was conducted into the geometric design of the column wheel that controls the different levers to ensure perfect, long-term, stable and simultaneous functioning of the chronograph mechanism, a feature that is essential for a high performance chronometer. Operation: the chronograph function is stopped and started via the pusher located on the lower left at 8 o’clock. The hands are reset by pressing another pusher located on the upper left at 10 o’clock.

CHRONOGRAPH (Column wheel in titanium)

The modern architecture of this movement has allowed for the consistent and rational arrangement of its constituent parts, avoiding unnecessary superimpositions and permitting the best possible use of the functions with technical solutions. For example, research was conducted into the geometric design of the column wheel that controls the different levers to ensure perfect, long-term, stable and simultaneous functioning of the chronograph mechanism, a feature that is essential for a high performance chronometer. Operation: the chronograph function is stopped and started via the pusher located on the lower left at 8 o’clock. The hands are reset by pressing another pusher located on the upper left at 10 o’clock.

SPLIT SECONDS MECHANISM WITH IMPROVED PERFORMANCE

One of the new characteristics developed for the RM 004-V2 Felipe Massa is the virtually complete elimination of initial jumping in the chronograph seconds hand. A great number of studies led to the design and manufacture of gear wheels and levers in titanium, thus reducing inertia. Moreover, the development of a new generation of split seconds components meant that energy consumption of this function could be lowered by approximately 50 % through the reduction of friction on the spindle, and the chronograph hands jumping when stopping is virtually eliminated. This was achieved by research that focused on the working of the split seconds’ arms. Operation: By depressing the pusher on the right (at 4 o’clock), the user can stop the split second hand in order to read an intermediate time while the chronograph is engaged. Pressing the pusher again allows the split seconds hand to rejoin the chronograph, ready for the next measurement.

MODULAR TIME-SETTING MECHANISM FITTED AGAINST THE CASEBACK

Provides the following advantages for longevity and maintenance:
 - Since the component is mounted outside of the movement, the time setting assembly can be changed without affecting the integrity of the bottom plate in the event of a possible defect or during maintenance, 
- The mounting and dismantling of this module from the back will not require the removal of the hands and the dial.

MODULAR TIME-SETTING MECHANISM FITTED AGAINST THE CASEBACK

Provides the following advantages for longevity and maintenance:
 - Since the component is mounted outside of the movement, the time setting assembly can be changed without affecting the integrity of the bottom plate in the event of a possible defect or during maintenance, 
- The mounting and dismantling of this module from the back will not require the removal of the hands and the dial.

FAST ROTATING BARREL

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.

Characteristics

TORQUE LIMITING CROWN
This added security system prevents accidental overwinding of the watch, the result of which can cause damage such as breaking the winding stem or putting too much pressure on the barrel spring.

BARREL PAWL WITH PROGRESSIVE RECOIL
This device permits an appreciable winding gain (circa 20%), especially during the start of winding. It also aids in the even distribution of the mainspring’s internal tension.

WINDING BARREL TEETH AND THIRD-WHEEL PINION WITH CENTRAL INVOLUTE PROFILE
The central involute profile of the winding barrel teeth and pinion provides an optimal pressure angle of 20°. This promotes effective rotary motion and allows for compensation of possible variations in the engagement of the going train, thus insuring excellent torque transmission with a distinct improvement in performance.

OTHER FEATURES
- Movement dimensions: 30.20 x 28.60 mm • Thickness: 7.67 mm
- Balance wheel diameter: 10.00 mm
- Jewels: 31
- Balance wheel: Glucydur, 2 arms, 4 setting screws
- Moment of Inertia: 11.50 mg•cm2, lever angle 53°
- Frequency: 21,600 vph (3 Hz)
- Center bridge: in grade 5 titanium
- Balance spring: ELINVAR by Nivarox®
- Shock protection: KIF ELASTOR KE 160 B28 • Barrel shaft: Steel sandwich, 20 AP

FINISHING

Movement
- Anglage and polishing by hand
- Locking sections hand polished
- Sapphire blasted milled sections
- Lapped and polished contact points • Burnished pivots

Steel parts
- Sapphire blasted surfaces
- Anglage and polishing by hand

Wheels
- Concave chamfering with a diamond tool
- Circular finished faces
- Gilded (before cutting the teeth)
- Minimal corrections applied to the wheels in order to preserve geometry and performance.

DIMENSIONS
Length 48 mm x 39.70 mm x 14.95 mm