Slava 5498
Description
The probably cheapest way to get a mechanical chronograph movement with a split seconds complication is to get hold of a Slava 5498.
Its diameter is nominally 54mm (23 1/2 lignes) and thus optimal to fully fill the stopwatch case.
size comparison with a Movado 6
Functionally, everything is alright with this movement, it has got 20 jewels, a pallet lever escapement and uses even a Breguet overcoil hairspring for its three-leg anular balance.
The capaticy of this movement is in the range of 1/10 seconds until 30 minutes.
Start, stop and reset are realized with a lever, the split-seconds mechanism with a column wheel.
You can see in slow motion, how the split seconds resets:
This time, no further disassembly was made, because it is a NOS stopwatch, which should not be harmed.
Technical data
| Manufacturer: | Slava |
| Caliber: | 5498 |
| Size: | 23 1/2''' (measured: 52,9mm) |
| A/h: | 36000 |
| lift angle: | 47° |
| Number of jewels: | 20 |
| Escapement: | Pallet lever |
| Balance types: | monometallic anular balance (three legs) |
| Shock protection(s): | none |
| Balance bearing / direction hairspring: | Counterclockwise |
| Moveable stud: | no |
| Adjust mechanism: | Long regulator arm |
| Construction: |
|
| Construction type: | solid construction |
| Features: |
|
| Inventory number: | 22037 |
Usage gallery
Slava stopwatch