Now we all know, and winder instruction manuals tell us clearly, that each watch has a required daily minimum of rotor turns (meaning also watch turns on the winder) in order to keep the watch from eventually running down. Still – and this is significant – the watch's gear train will be subjected to greater-than-normal torque for any periods during which the watch is actually rotating on the winder.
#Automatic watch winder rolex full
We will program our winder by suitable means to wind the watch just short of its full wind condition. Recall that this is hardly noticed on a watch that is being worn on the wrist.īut let us assume that we will not allow the watch to run on the winder beyond the point where slippage of the mainspring begins to take place. Once the mainspring reaches the slippage point, the added torque could increase significantly, particularly if the slippage threshold has moved up as a result of poor lubrication inside the mainspring barrel. This could explain many owners' puzzlement with the fact that their watches run at a different rate (usually faster) on a winder than they do on the wrist or on the dresser top…not to mention running differently on one winder compared to another winder. The isochronism adjustment built into the watch, if any, could minimize the net effect, but the effect will definitely be there. So for better or for worse, we can assert that the watch's balance wheel's amplitude of oscillation will at best increase ever so slightly while the watch is turning compared to the amplitude when the watch is resting. To be sure, the increment is not large but it is felt. Naturally, the extra torque is passed on to the watch's gear train and the escapement. In other words, the winding system must produce a torque greater than that to which it is adding energy and a winder does this in a steady and continuous fashion while it is turning the watch. Well, nothing comes without its price so one unavoidable requirement for winding the watch in this way is that we must establish a torque differential between the rotor's gear train and the resting torque already built up in the mainspring, much as we need a level difference, however small, in order to be able to pour water from one container to another. To wind a watch, the winder has to turn it, using the force of gravity to keep the rotor stationary while the watch rotates about it. But as with all things, what you get is not always wholly and uniquely what you want. Having placed a watch on a winder, we expect it to do only one thing: Wind the watch's mainspring and keep it wound in such a way that the watch will always be ready to wear at a moment's notice and be showing the right time. Watches and Winders: It's Not Only About Turns per Day
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