Wostok 2414A

 
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Wostok 2414A

Description

The Wostok 2414A, the first revision of the Wostok 2414, belongs as the whole caliber familiy to the most often built and used manual wind movements from Russia.

base plate

base plate

On the base place you can see, that all bearings, except those for the mainspring barrel, are equipped with synthetic rubies.

base place with click mechanism

base place with click mechanism

It uses a directly driven minute wheel, which is beared below the mainspring barrel bridge.

The crown wheel is located half-way to the center. This position is typical for the whole caliber series.

gear train

gear train

The gear train with its directly driven center minute wheel and indirectly driven center second represents state of the art of the 1950ies and 1960ies.

side view of the gear train

side view of the gear train

A technical clever solution is, that the third wheel drives both, the minute wheel and the center second wheel. The latter is effected by way of the outer rim of the third wheel, which is at the same time in engagement with the fourth wheel drive and with the drive of the indirect central second. Both have only the same number of teeth. The center seconds wheel is held in position by a leaf spring and is prevented from fluttering by its minimal friction.

Spacer for the balance wheel cock

Spacer for the balance wheel cock

The way, the height of the balance wheel cock is adjusted, is a bit odd: Below the cock, there’s a flat brass stripe, which enlarges the height for the balance wheel cock a fraction of a millimeter.

The screwless balance is beared in two inhouse shock protections and has got three slightly waisted arms. It beats with 19800 A/h and regulates a conventional pallet lever movement.

Imprint "Russia"

Imprint "Russia"

What exactly are the revision changes to the caliber 2414 is yet unknown.

empty dial side

empty dial side

On the yet empty dial side, you can spot the yoke winding system half way to the center. There’s no setting lever screw any more, just a spring. Its pusher on the movement side has great flying abilities :-)

Date mechanism with switching cams

Date mechanism with switching cams

The date indication mechanism works with a switching wheel (at 8 o’clock), which has got a moveable cam. It is responsible for the instant date change ad midnight and the half-fast correction by turning the hands back and forth.

date indication mechanism

date indication mechanism

A spring loaded jack at 6 o’clock ensures, that the date remains in position and is not switched back when you turn back the hands. After mounting the cover plate, the spring is inserted.

Wostok 2414A dial side

Wostok 2414A dial side

In the lab

The tested specimen was well working, when it came into the lab and hence was not serviced, but only adjusted a bit.

Timegrapher result

The rates are pretty well, nevertheless on a serviced or brand new specimen, they will be much better:<br/> The perfect adjustment of the beat error in all positions is noteable! The rate differences between vertical and horizontal positions a pretty large, nevertheless on daily wear, they will more or less neutralize each other.

horizontal positions
dial up +7 s/d 222° 0.0ms
dial down -1 s/d 205° 0.0ms
vertical positions
crown right (12 up) -70 s/d 172° 0.1ms
crown up (3 up) +25 s/d 192° 0.1ms
crown left (6 up) +10 s/d 188° 0.1ms
crown down (9 up) -90 s/d 171° 0.1ms

Technical data

Manufacturer:Wostok
Caliber:2414A
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): 3 arms, russian
Balance bearing / direction hairspring:Clockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel, mainspring barrel, center second pinion
Winding mechanism:yoke winding system
Setting lever spring:5 hole(s)
Features:SCI, QG, RDR
Functions:hour, minute, second, day
A/h:19800
Size:11 1/2 (10 1/2)''' (measured: 26,4 (23,5)mm)
Inventory number:16020

Usage gallery

Wostok Kommandirski gents watch

Wostok Kommandirski gents watch

Wostok Kommandirski gents watch

Wostok Kommandirski gents watch

Wostok Kommandirski gents watch with original bracelet

Wostok Kommandirski gents watch with original bracelet

This movement and the three shown watches are a kind donation of the Mr. and Mrs. Ditte. Thank you very much for the support of the movement archive!