Buy Automatic Watch, The Menu Is Up-chain Or Two-way Up?

When a mechanical watch is running, it will continuously consume energy. In order to maintain it, it needs to be replenished. There are two supplementary methods, one is manual winding and the other is automatic winding. The manual winding requires the wearer to actively rotate the crown, while the automatic winding is to use the change of the wrist position of the wearer in daily life to promote the automatic rotor rotation in the movement, thereby replenishing energy. The automatic rotor will rotate to the left and right. If it rotates in one direction, the movement will be supplemented with energy. We call it ‘single upward’, and if it can be in both directions, it is ‘two-way winding’. . According to our understanding, a ‘two-way winding’ watch will be better than a ‘single-winding’ watch. After all, no matter how it rotates, it will add energy to the mainspring. But in fact, sometimes ‘two-way up’ is sometimes not as good as ‘single up’. In two-way winding watches, the most commonly used method is the ‘reversing wheel’ structure. It utilizes two ‘reversing wheels’ to convert the movement of the automatic rotor to the left and right into one direction. But there is an interesting phenomenon, that is, when the left-to-right amplitude of the automatic swing is less than 30 °, although the two reversing wheels are running, in fact, the gear in the upper right corner does not receive energy, and the natural watch also Can’t get energy. This phenomenon is called ‘idle’, which means that although the automatic rotor is spinning, it is an invalid blank mileage. Of course, there is also an “idle” in a single upward chain. From a probabilistic perspective, the probability of its idling is 50%. After all, there is only one direction to replenish energy during rotation. But the advantage of a single upward chain is that it will wind up no matter how low the automatic swinging amplitude is. The two-way winding, once the wearer’s activity is small, then it is actually not effectively replenishing the movement with energy. At the same time, because of the simple mechanical structure, the probability of failure in the later use will be reduced. So, buy an automatic watch, the menu is up-chain or two-way up? The answer is ‘it doesn’t matter, you can.’ It is not ‘scientific’ to judge the quality of a watch simply by single or double winding. Because the winding efficiency of a mechanical watch is not only related to the way it is wound, it is also affected by various factors such as materials, wheel design, and wearer use. In the strict sense, this is a ‘science’, but because there are too many uncontrollable factors, there is no way to make scientific comparisons, and it finally becomes ‘metaphysics’. Since it is ‘metaphysics’, it depends on who is more fooled. —END —