Cyma 471
Mechanical
c. 1953
Self-winding (rotor)
No photos yet
Notes
1953-
patented double-excenter winding with jewelled rollers (for low height)
double jewel-bearing rotor
rotor retained by a locking bar (inside the arbor) between both jewels
An intermediate wheel between minute pinion and the rest of the train allows big balance and low profile without reducing the sturdiness (cf. Cyma 10 Pleiade).
Moreover this layout allows to place the seconds wheel either in the center or for a sub second, without further modifications
Dimensions
| Width | 18 lignes (40.6 mm) |
|---|---|
| Height | 4.9 mm |
| Stem height | — |
| Hands (H × M × S) | 0.95 × 0.65 × ? mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 35 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 6 mm |
| Thickness | 0.07 mm |
| Length | — |
| Barrel diameter | 1.3 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Cyma |
| Year | c. 1953 |
| Family | — |
| Clone of | — |
Related calibers
Documents
None
Updated 7 days ago · 0 revisions