Richard Mille RM 030 : CALIBRE RMAR1 - Skeletonised automatic-winding movement with hours, minutes, seconds, date, winding indicator, power-reserve indicator and declutchable variable-geometry rotor.
The RM 030 represents real progress in terms of performance. To develop a declutching rotor system – a dynamic continuation of the torque sensor already used in our tourbillon watches – had long been a dream of the brand.
The technical concept, here applied to an automatic watch, is closely linked to automotive mechanics. The innovation we hoped to achieve was to combine automatic clutching and declutching control of the winding system with a torque sensor, thus ensuring an ideal degree of spring tension for the perfect supply of torque to the movement.
The winding of an automatic wristwatch is accomplished by a small turning rotor, silently driven as a result of the physical movements of the wearer. These rotations of the rotor provide energy to the winding barrel, which reaches its optimal point once it is fully wound. After this point, overwinding can easily occur and needs to be avoided. This is traditionally achieved through the use of a sliding flange that allows the spring to slip, thus avoiding the movement becoming overwound. However, this traditional system allows the build-up of harmful debris inside the winding barrel as the flange releases the excess energy of overwinding during longer periods, especially when a person is particularly active. This in turn can severely affect chronometric results.
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