The Brac 2003 is a very well made swiss pin lever movement, which does not have to hide beyond better pallet lever movements.Video on YouTube
The speciality of this movement is besides its stable construction the way, the indirectly driven center second was realized.
The center second wheel, which usually consists just of a thin pinion, has got a large diameter and is additionally fixed by a friction mechanism, avoding an fluttering run. It is driven, also unusually, by the double fourth wheel below the movement bridge and a transmission wheel. Since the fourth wheel and the center second wheel contain the same number of teeth, it’s a 1:1 transmission.
The rest of the movement is very well made, contains bearing and cap wheels, just as a good quality lever movement, and even the balance with its “false” screws is beared in two rare to find Resomatic shock protections.
The length of the hairspring is adjusted by the hairspring key only, but on the balance cock, there’s a scale, where you can get an idea, at which position, the hairspring key is adjusted.
The center second mechanism is direcly integrated into the movement, into the gear bridge, so that it doesn’t add a single millimeter of height to the movement.
On the dial side, the minute wheel is ruby-beared - technically not really required, but it doesn’t harm, too. However, the winding mechanism is just a rocking bar winding mechanism, and the click mechanism is very simple constructed and consists of only of one single spring. This is a kind of predetermined breaking point, since these springs have a rather short lifetime.
To sum it up: The Brac 2003 is an upper class pin lever movement, being much better made than most other simpler pin lever movements.
In the lab
|dial up||-7 s/d|
|dial down||+5 s/d|
|crown right (12 up)||-30 s/d|
|crown up (3 up)||-80 s/d|
|crown left (6 up)||-50 s/d|
|crown down (9 up)||+-0 s/d|
|Number of jewels:||17|
Nickel screw balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Hairspring key|
|Construction type:||solid construction|
|Winding mechanism:||rocking bar winding system|
|Setting lever spring:||4 hole(s)|
|Functions:||hour, minute, second|
|Size:||10 1/2''' (measured: 23,0mm)|
Flume: 1957 41|