RM 74-01

VARIABLE-GEOMETRY ROTOR

The RM 74-01 uses variable geometry to optimise the rotor’s winding motion.

Rotor specifications:

• Heavy outside edge and heavy edge ring in 18K white gold
• Weight segment in platinum
• Automatic OneWay winding system in ceramic with ball bearings
• Bidirectional winding system

This variable-geometry rotor has been incorporated within the in-house CRMT6 calibre, making it possible to set the rotor according to the owner’s activity level.

MOVEMENT CHARACTERISTICS

• Movement dimensions: 30.70 x 23.70 mm
• Thickness: 6.20 mm
• Number of jewels: 23
• Balance: CuBe, 4 arms, 4 setting weights, moment of inertia of 7.5 mg.cm2. 50′ angle of lift
• Frequency: 28,800 vph (4 Hz)
• Balance spring: AK 3
• Shock protection: INCABLOC 908.22.211.100 (transparent)

The setting is modified by adjusting the two moveable weights into the correct position and fixing them in place with spline screws. The inertia of the movement is increased when the two weights are closer together; the barrel then rewinds more quickly. If the weights are positioned at the extremities of the rotor, the inertia is decreased and the barrel winds more slowly.