Table 1 Gear ratio
From: Attiny85 controlled watch winder for self-winding mechanical watches
Gear ratio | Driver gear | Driven gear | Ratio |
|---|---|---|---|
\(\Re_{1}\) | \({\mathcal{O}\mathcal{W}}\) | \({\mathcal{F}\mathcal{R}\mathcal{W}}\) | 1:1 |
\(\Re_{2}\) | \({\mathcal{F}\mathcal{R}\mathcal{W}}\) | \({\mathcal{S}\mathcal{R}\mathcal{W} }\& { \mathcal{P}}{\text{L }}\) | 30:1 |
\(\Re_{3}\) | \({\mathcal{S}\mathcal{R}\mathcal{W}}\) | \({\mathcal{R}\mathcal{W}}\) | 5.16:1 |
\(\Re_{4}\) | \({\mathcal{O}\mathcal{W}}\) | \({\mathcal{R}\mathcal{W}}\) | 154.8:1 |