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"Well, yes," says Salvador Arbona. Omega Seamaster Replica's technical director, who oversees the development of the in-house movements program. "But a chronograph can be a very parasitic device." The chronograph consumes an enormous amount of power, and it also intensifies the variable torque within the mainspring when the power reserve begins to decrease. If you keep your chronograph running indefinitely, it will compromise the timekeeping functions of the watch. "There are solutions, such as the vertical gear clutch, that have been developed, but these are for large-scale industrial applications."
During servicing of vertical-clutch movement, the clutch section is usually removed and replaced. Arbona continues: "We decided to use a different solution,Replica Watches the oscillating-pinion, that has three major advantages. It is simpler and more direct. The energy is fed directly from a geared wheel from the seconds to the chronograph. It is also smaller, and because it's simpler, you can make it smaller. Third, it doesn't affect the timekeeping. "I say this with a caveat because our movement was the first in the world to have two oscillating gears for this purpose."
The oscillating gear is the component in question; the calibre of the CRMC1 was the first in the world to incorporate two oscillating gears.
The calibre CRMC1 is operated as follows. When in rest, the seconds wheel drives a pinion oscillating slightly to one side. It shifts when activated to engage the wheel of the chronograph. Arbona confirms that chronographs are also affected by the second wheel driving the minute counter. To solve this problem, Arbona designed a reduction gear which drives a pinion to power the minute counter.
He says, "This is how the torque from the barrel is split into three parts: the chronograph second counter, the timekeeping function that also powers it,Sinn Replica and the reduction gearing to drive the hour counter. It is not necessary to have an oscillating gear because the hour counter rotates so slowly. The end result will be a system which is less parasitic and doesn't affect the chronometric performance underlying the movement."
The calibre CRMC1 divides the torque among the various counters of the chronograph. The lower teeth of both oscillating pinions and the seconds and minutes wheels (A) of the movement are permanently locked to the lower teeth. The upper teeth of the rockers (C), which are linked to the seconds and minutes wheels (D) of the chronograph (E), will engage or disengage when the rockers move.