Raketa 2614.H
Description
Probably around 1980, the caliber Raketa 2614.H was launched, a reworked version of the predecessor caliber Raketa 2614.
The main difference is the use of three additional jewels, used for bearing the calendar ring.
base plate
The diameter of this windup movement is 26mm, or 11 1/2 lignes.
As you can see, all bearings, except that of the mainspring barrel, contain rubies, more, you cannot really expect.
base plate with minute wheel and bridge
The classical construction of this movement uses a directly driven center minute wheel, which is beared under its own bridge. Both bearings contain rubies.
gear train
The remaining gear train is classical, too: Third wheeel, directly driven center seconds wheel and escape wheel, which is controlled by swiss pallet lever.
It is typical for Raketa movements of that time, that the third wheel, minute whell and center seconds wheel all have the same (large) diameter.
For the escape wheel bearings on both sides, a cap jewel plus shock protection is used.
side view of the gear train
The four-leg anular balance is beared in a pair of russian shock protections of type Poljot. Its beating rate is 18000 A/h, and it can be adjusted at the hairspring key only.
typical russian - the balance cock spacer
Like on almost all russian movements, here, a flat brass plate is used too to adjust the height of the balance wheel cock for adjusting it to the different shock protection systems. A simple low-tech solution, which is very effective.
dial side without calendar mechanism
On the dial side, there’s the oddity of using three standard bearing rubies at positions 0:30, 5 and 9 o’clock for bearing the date ring. Maybe it was cheaper to use standard rubies instead of special, convex cap jewels.
The Raketa 2614.H uses a calendar mechanism, which instantly ad midnights advances the date and also allows a quick-set correction just by pulling the crown beyond the time setting position.
To avoid damage by the quickset mechanism, when its is used around midnight, the date switching wheel has got a moveable cam on its lower side. A pin engages with one of the legs, but it can also stay without moving for a while. During the full day, a spring ensures, that tension is generated, which can unload at midnight.
date switching wheel, lower side
At 2 o’clock, you can see the quickset mechanism with its two levers, which advance the date ring one step by each pull of the crown.
visible calendar mechanism
The calendar mechanism is covered with a plate and houses the spring loaded locking mechanism.
cover plate
Apart from all this, there’s only the detail to be said, that the Raketa 2614.H of course uses a yoke winding mechanism.
Raketa 2614.H: Dial side
In the lab
Timegrapher result
The timegrapher results are OK, but the amplitudes are too low, although a simple revision was made.| horizontal positions | |||
|---|---|---|---|
| dial up | +10 s/d | 224° | 0.0ms |
| dial down | +1 s/d | 223° | 0.1ms |
| vertical positions | |||
| crown right (12 up) | +2 s/d | 205° | 0.4ms |
| crown up (3 up) | +28 s/d | 201° | 0.0ms |
| crown left (6 up) | +33 s/d | 195° | 0.0ms |
| crown down (9 up) | +20 s/d | 212° | 0.3ms |
Technical data
| Manufacturer: | Raketa |
| Caliber: | 2614.H |
| Caliber base: | Raketa 2601.H |
| Size: | 11 1/2''' (measured: 26,0mm) |
| A/h: | 18000 |
| Number of jewels: | 21 |
| Escapement: | Pallet lever |
| Balance types: |
monometallic anular balance (four legs) |
| Shock protection(s): |
Poljot |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | yes |
| Adjust mechanism: | Hairspring key |
| Construction: |
|
| Construction type: | solid construction |
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 4 hole(s) |
| Attachment of setting lever: | plugged |
| Features: |
|
| Mentioning in literature (years): | 1983 |
| Inventory number: | 23051 |
Usage gallery
Raketa gents watch