Corum Ti-Bridge Automatic Dual Winder
by Kyle Stults on March 06, 2013
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Baselworld 2013 preview…

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Corum Ti Bridge Dual Winder

Next month at Baselworld Corum will officially unveil the Ti Bridge Automatic, shown here.  The watch is in tune with the Corum Bridge collection‘s linear architecture (barrel, gear train and escapement) as well as its tonneau-shaped case.  The new Dual Winder system of the automatic CO 207 caliber, held in place by four titanium cross-bars (as you can see above), is designed, developed and patented by Corum.  It derives its energy from two interconnected inline oscillating weights.

Corum Ti Bridge Dual Winder Closeup

The case is titanium, 42mm x 52mm, though Corum indicates that it is slimmer than predecessors.  The Ti-Bridge Automatic Dual Winder will also be issued in a red gold, 25-piece limited series.

Corum Ti Bridge Dual Winder Caseback

A bit more on the movement, according to Corum.

The Dual Winder system features two in-line mounted circular oscillating weights, interconnected via a transmission arbor that makes them move in parallel, whatever the rotation direction.  There are three integrated stacked mechanisms at 9 o’clock – a ball bearing device and two unidirectional ball bearings clutches – made in ceramics and thus requiring no lubrication – the winding is efficient in both directions of the oscillating weights’ rotations.  Two steel disks top each of the oscillating weights, while two 1.32-gram tungsten semi-cylinders ensure smooth winding. A single barrel placed at 3 o’clock stores up the CO 207 caliber’s 72-hour power reserve.

More details to come.