RM 11-03 McLaren
Technical Sheet
Main features
Free sprung balance with variable inertia
This type of balance wheel represents the ultimate in innovation. It guarantees greater reliability when subjected to shocks and also during movement assembly and disassembly, hence better chronometric results over time. The regulator index is eliminated and a more accurate and repeatable calibration is possible thanks to 4 small adjustable weights located directly on the balance. Double barrel system
The double barrel system contributes to the torque stability over a longer period. This is achieved by using more rotations of the barrel, there by reducing pressure and wear on the teeth, bearings and pivots, hence an improved long-term performance. Other features
Jewels: 68 Barrel arbor: AP 20 steel Balance: Glucydur, 4 arms, moment of inertia 4.8 mg•cm2, angle of lift 53º Frequency: 28'800 vph (4 Hz) Balance spring: AK3 Shock protection: INCABLOC 908.22.211.100 (transparent) Escapement wheel jewels: Rubifix (transparent) Stem with three positions: manual winding, date, hand setting
Movement
Baseplate and bridges in titanium, wet sandblasted, PVD treated Anglage and polishing by hand Locking sections hand polished Burnished pivots Diamond polished sinks Pinions with undercuts Sandblasted and rhodium-plated, bevelled wheels Steel parts
Sapphire blasted surfaces Anglage and polishing by hand Screw slot and screws bevelled and polished with rounded and polished tip Wheels
Concave chamfering with a diamond tool Circular-decorated faces Rhodium plating (before cutting the teeth) Minimal corrections to preserve the geometry of the wheels and their performance |