JB Factory Richard Mille RM52-01 Real Tourbillon Review

The Richard Mille RM 52-01 Skull Tourbillon model is one of the most radical, most provocative and micromechanically boldest designs that rewrites the rules of contemporary horology. JB Factory has created a high-end 1:1 Super Clone masterpiece that reinterprets the entire spirit and architectural balance of the watch by focusing on the heart of the model, unlike superficial imitations and fixed trim plates on the market. Every millimeter has been meticulously examined, from the working real ruby ​​bearing shining between the teeth of the skull to the real 60-second tourbillon cage produced by the Shanghai movement factory.

The Ruby Stone in the Mouth is Not an Ornament: It is a Real Mechanical Bearing of Tourbillon

The most striking element that forms the visual signature of the original Richard Mille RM 52-01 model is the red ruby that sparkles between the skull's jawbones. This stone not only creates the feeling of a sci-fi energy sphere; It is also the main functional bearing bearing the vertical center of the tourbillon axle.

Since the tourbillon axis remains low in ordinary replicas on the market, manufacturers try to imitate the image by simply placing a fake stone between the chin. JB Factory, on the other hand, placed the central shaft of the tourbillon exactly on the axis where the lower and upper jaw of the skull meet. The ruby ​​stone in the rim is a genuine synthetic corundum mechanical bearing that carries the vertical axis of the tourbillon.

Internal Case RM052 Steel Strike Stamp and Case Architecture

One of the first points that collectors and watch appraisers check is the internal architecture of the case. There is a deep "RM052" model stamp stamped with a steel mold on the left wall of the inner case of the original model. Ordinary manufacturers skip this detail completely or leave it plain for the sake of ease of installation.

JB Factory engraved an exact steel relief stamp on the inner left wall, based on the original molds in case production. When the case dimensions are examined; Compared to the original's 50 x 42.7 x 15.95 mm dimensions, JB Factory has achieved extraordinary ergonomics with 49.8 x 44.3 x 16.4 mm. The curved ergonomic case profile fits perfectly on the wrist, eliminating the discomfort caused by bulky 18.5 mm replicas.

Front and Rear Axial Mechanism Alignment

When the watch is examined from the back, the fascinating 60-second rotation of the tourbillon cage, which works coaxially with the ruby bearing under the nuchal bone of the skull, can be clearly observed. When viewed from the front, the black balance wheel disappears from view, remaining exactly behind the lower jawbone; At the bottom, only the fluid oscillation of the escapement wheel is visible.

The rough closing bridges, unbalanced gear plates and parts that try to hide the center of the tourbillon seen in commercial products have been completely eliminated in the JB model. In this way, the skeletal structure of the watch fully reflects the three-dimensional transparency and architectural depth of the original model.

Balance Wheel, Escapement Arrangement and Micromechanical Details

The mechanism components hidden behind the skull are machined to high-precision Swiss tolerances. The black balance wheel's weight screws and free-oscillating capillary spring ensure that the watch operates at a balanced frequency without being affected by gravitational forces.

The tooth profiles of the escapement wheel are smoothed by micro-milling, producing minimum friction during energy transfer. This ensures that the tourbillon cage rotates at a fluid and rhythmic pace.

Shanghai Movement Factory Special Tourbillon Caliber and QE Tests

In this model, instead of standard Asian movements, JB Factory uses a manual-wound real tourbillon caliber specially ordered from Shanghai Watch Movement Factory. This caliber is based on a well-established mechanical platform that has proven its worth in the double tourbillon and Excalibur projects previously undertaken by JB Factory.

Each watch that comes off the production line is subjected to 48 hours of operation, impact simulation and isochronism tests on high-strength simulator QE devices. The daily deviation tolerance is calibrated within the range of 2 to 6 seconds, ensuring the chronometric stability expected from a tourbillon watch.

Skull 3D Sculpture Crafting, Right Eyewheel and Forehead Ruby

The skull statue at the center of the clock is carved from solid titanium and special alloys on CNC micro-machining machines. The bone lines of the skull, teeth separation and nasal bone depth are far ahead of the flat and flat appearance of ordinary replicas.

The diameter, tooth depth and tooth angles of the mechanical gear rotating in the right eye socket of the skull exactly match the original technical plans. The domed red ruby ​​stone in the center of the forehead has a high index of refraction and exhibits deep crystal clarity under direct light.

Back Cover Deep Steel Mold Engravings in Original Standards

Superficial laser engraving method is preferred on the back covers of the models on the market; This method does not create a sense of depth in the texts and carries the risk of being erased over time. In the JB Factory RM52-01 model, the original fabrication method **deep steel die pressing** technique was used.

The model codes, registration numbers and brand typography on the back cover have micron-level depth and sharp edges. The star profile slots of the screws have been specially opened to be fully compatible with the original torque screwdriver.

Thailand Imported Natural Rubber Cord and Matte Sandblasting Buckle

Strap quality is the determinant of wearing comfort in sporty and avant-garde models such as Richard Mille. Unlike cheap silicone straps that are hard, smelly and attract dust, JB Factory used pure natural raw rubber imported directly from Thailand in this model.

The rubber cord has an extremely flexible, lightweight, odor-free and antistatic structure. The folding clasp that locks the band is equipped with matte sandblasted titanium surface workmanship and offers a safe and smooth grip on the wrist.

Crown, O-Ring Seal Insulation and Case Ergonomics

The crown of the watch is surrounded by a special serrated rubber ring that provides easy grip even with gloves. Since it is a manually wound caliber, the filling sensation of the gearbox is felt with a solid and smooth clicking sound with every winding movement.

Thanks to the double-stage O-ring seals inside the case and special insulation washers on the crown neck, full protection is provided against daily liquid contact such as sweat, rain and hand washing.

Saat Dedektifi Workshop Review

JB Factory Richard Mille RM52-01 Skull Tourbillon is one of the most assertive and mechanically honest models ever produced in the replica market. The fact that the ruby ​​in the mouth of the skull is not an ornament but a real tourbillon bearing, the real tourbillon caliber of Shanghai origin, and the case structure that exactly matches the original dimensions place the model at the top of its segment.

Detective Note: The model is shipped from the factory with a special protective JB Factory leather travel case and a warranty certificate. It is a perfect choice for skeleton watch enthusiasts and collectors who want to experience the real tourbillon complication.