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Selected tag: Unusual mechanics
Found: 3 articles
Armin Strom · Manual winding · Calibre analyses
Armin Strom ARF21: why a watch needs two balances and a spring between them
Two exposed balances work on the left of the dial, while time runs quietly on the right. We explore the hand-wound ARF21, its steel coupling spring and twin seconds using the Mirrored Force Resonance Manufacture Edition Blue, presented on February 28, 2023.
Breguet · Manual winding · Calibre analyses
Breguet 7727: why a mechanical watch uses a magnetic balance pivot
Magnets are usually seen as a threat to mechanical watches, yet in the Breguet 7727 they help support the balance staff. We examine the manually wound 10 Hz 574 DR, its 60-hour reserve and the limits of striking accuracy figures.
F.P.Journe · Manual winding · Calibre analyses
F.P.Journe 1510: a small spring with a big job
In the Chronomètre Optimum, energy passes through two barrels, a one-second remontoire and the EBHP escapement. We examine why another energy store sits between the mainspring and balance, and why 70 hours of running do not tell the whole story.