Timex M105

 
Timex M105

Timex M105

Description

The caliber M105 bases on caliber M24, but has got the dial mounted onto the date plate and not on the main plate. Because of this, the diameter increased to 13 lignes, this is pretty much, but also allows a larger date ring.

It’s interesting, that even on the same caliber M105, there are differences in the number of holes, on a taiwanese sample, there are fewer holes on the top plate:

taiwanese version

taiwanese version

The ruby-less pin lever movement has got a two leg anular balance with a rugges v-conic staff, so no shock protection is needed. It beats slowly with 18000 A/h.

dial side without date mechanism plate

dial side without date mechanism plate

The bare dial side shows the rocking bar winding system and the depth-adjustable balance wheel bearing. It also shows the three screws for mounting the movement plate. This means, that this movement is generally serviceable, but it’s not much fun to put the balance wheel, the lever, four gears and the mainspring barrel at the same time under just one plate and fix everything with screws on the dial side!

Unfortunately, the Timex M105 uses just a simple spring as ratchet mechanism - but this spring is not really durable and so, you’ll often find this kind of movement with a broken winding mechanism. If this is the case on the whole M104 series has to be evaluated.

date mechanism plate

date mechanism plate

The date indication mechanism is an own module, which is mounted onto the dial plate. The hour wheel drives the switching wheel, which advances date (and day on caliber M106) at the same time, the date can be corrected semi-fast by turning the hands back and forth.

Timex M105 dial side

Timex M105 dial side

Technical data

Manufacturer:Timex
Caliber:M105
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Balance bearing / direction hairspring:Bridge
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever, escape wheel, seconds wheel, third wheel, large driving wheel, mainspring barrel
Winding mechanism:rocking bar winding system
Setting lever spring:2 hole(s)
Features:SCD,QG
Functions:hour, minute, second, day
A/h:18000
Size:13''' (measured: 29,5mm)
Inventory number:16017

Usage gallery

Timex gents watch model 25418

Timex gents watch model 25418

Timex diver model 27671

Timex diver model 27671

Timex gents watch model 27729

Timex gents watch model 27729

The taiwanese M105 including watch were kindly donated by R.Ludwig. Thank you very much!