I thought I’d share even though many I assume have read and seen the details elsewhere.
Caliber 12.01
Powering the UR-100 SpaceTime is the automatic Caliber 12.01, with baseplates in ARCAP and a power reserve of 48 hours. The automatic winding rotor is regulated by a flat turbine, theWindfäng(Swiss German for “air trap”) that minimizes shocks to the rotor bearing and reduces over-winding and wear and tear. The rotor, which is partially supported on its periphery by the flat turbine, also has a larger diameter, resulting in a lower mass and therefore less wear.
In-house testing of the flat turbine rotor regulation system found that it provided significant and exponential protection against excessive rotor speeds (theWindfängerrotates six times for every rotation of the winding rotor).





