Timex M24

Description

Around 1963, the new Timex caliber M24 replaced the outdated Timex M22. It was a little bit larger and had a much more modern appearance.

It was probably made until the early 1980s, and in the 1970s, it was used in parallel with the at least function-wise similar calibers Timex M78 and Timex M100.

Fun fact, around 1963, the UMF, too, released their base caliber, with the number M24.

Older versions had fewer holes in the gear train bridge, compared to later ones.

An oddity of the Timex M24 is, that it is assembled head-over, meaning, the gear train bridge acts as base plate. It also contains the three pillars, which are screwed on the dial side.

Servicing this movement is possible, but it’s difficult and makes not much fun.

The gear train is special, with mainspring barrel, second wheel, third wheel, center seconds wheel and escape wheel and reminds a bit of a Roskopf movement.

The center seconds pinion is optionally prolonged for attaching the second hand.

On the dial side, the hands are driven by the mainspring barrel and a double cannon pinion, where the lower side is connected with the mainspring barrel, and the inner/upper side is mounted wth a slipping clutch.

The M24 uses a simple two-leg anular balance, whose hairspring is attached to the base plate at the dial side.

It beats with 18000 A/h and can be adjusted with a regulator arm.

Since Timex uses their V-Conic bearings with a massive balance staff, no further shock protection is required.

On the dial side, there’s the rocking bar winding system and a simple, but effective ratchet. The ratchet wheel is secured with a copper plate spring on the axle.

On position 6 o’clock, you see the balance screw, with which the height play of the balance staff is adjusted.

Technical data

Usage gallery

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