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Description
YSF Roger Dubuis Excalibur Double Flying Tourbillon RDDBEX0471
An ambitious technical achievement that successfully integrates twin functioning tourbillons into a highly accurate DLC titanium skeleton framework.
Powered by Clone RD001 Manual Machinery
The core of this reference is the highly complex YSF Clone RD001 manual-winding movement. Unlike standard replicas that utilize a single balance wheel disguised as a tourbillon, this caliber drives two independent, continuously rotating flying tourbillon cages. The movement undergoes extensive simulated QE testing to ensure the dual-escapement architecture maintains stability under tension. Because the gear train must distribute power to two separate regulating organs, the mainspring is exceptionally heavy, requiring deliberate and slow manual winding to prevent component fatigue.
Due to the complex nature of the dual-tourbillon regulation, accuracy typically falls within ±10–15 s/day. While the twin tourbillons theoretically average out positional errors, the clone manufacturing tolerances mean it performs adequately rather than at chronometer certification levels.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Double flying tourbillon
- ✅ Winding Direction: Manual winding (crown operation only)
Technical Specifications
Measuring 45mm in diameter and 13mm thick, the case utilizes genuine titanium to offset the weight of the complex movement. The DLC coating provides a tactical, matte finish that resists superficial scratches.
The dial is stripped back to reveal the star-shaped bridges, accented with precise dark green text detailing. Bridge finishing features distinct brushing that mimics the genuine haute horlogerie aesthetic.
The signature Excalibur fluted bezel is machined with sharp, uniform indentations. The DLC application is consistent inside the notches, showing no pooling or thin spots.
Fitted with a high-grade crocodile strap that integrates flush against the triple lugs. The titanium DLC folding clasp operates with crisp, secure tolerances.
Why YSF for This Reference?
Many collectors ask: “Why not BBR Factory?”
While BBR has produced notable skeleton tourbillons, YSF achieved a superior reliability threshold for the RD001 double tourbillon mechanism. YSF’s decision to use a genuine titanium base rather than PVD-coated steel ensures the 45mm case remains wearable, while their geartrain tolerances drastically reduce the immediate failure rate seen in earlier dual-escapement clones.
Full Disclosure: The manual winding action is exceptionally stiff; forcing the crown once resistance is felt will immediately break the heavy mainspring required to power both tourbillons.
Data Sheet
| MODEL REFERENCE | RDDBEX0471 |
| FACTORY / VERSION | YSF Edition |
| MOVEMENT | Clone RD001 Manual Machinery |
| CASE MATERIAL | DLC-Coated Titanium |
| WEIGHT & THICKNESS | [unconfirmed] g | 13.0 mm |
| CRYSTAL & LUME | Scratch-Proof Sapphire | Standard Super-LumiNova |
| DIMENSIONS | 45.0 mm × [unconfirmed] mm × 13.0 mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 30m stated rating — professional pressure test recommended before swimming |
Collector Q&A
Q: Do both tourbillons actually function on this YSF clone?
A: Yes, the YSF RD001 clone movement features two independent, fully operational flying tourbillons that rotate continuously, unlike cheaper replicas that use faux exposed balance wheels.
Q: How should I wind the YSF RD001 movement safely?
A: Because this caliber drives two tourbillon cages, the mainspring is heavy. Wind slowly and stop immediately if you feel significant resistance. Forcing the crown will break the mainspring.
Q: Is the case genuinely titanium or just coated steel?
A: The YSF version uses a genuine titanium base case with a DLC (Diamond-Like Carbon) coating, keeping the large 45mm profile surprisingly lightweight on the wrist.
Q: What is the primary known flaw of this specific YSF double tourbillon?
A: The manual winding feedback is noticeably stiffer than the genuine caliber, and the power reserve is practically limited to approximately 36 hours, requiring daily winding for continuous operation.