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Selected tag: Manual winding
Found: 5 articles
Armin Strom · Manual winding · Calibre analyses
Armin Strom Tribute³ Au750: why the AMW21 barrel works in reverse
The new Tribute³ Au750 puts its barrel on display from the dial side. Inside is the hand-wound AMW21 with a stated 100-hour reserve. Here is how the mechanism works and what that number means.
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.
Grand Seiko · Manual winding · Calibre analyses
Grand Seiko 9SA4: why a wagtail lives inside the calibre
A hand-wound 5 Hz calibre with around 80 hours of reserve. Grand Seiko rethought the winding assembly and shaped one component like a bird, whose movement is visible as the crown turns.