The screw/cam flex the origin of the hair spring and physically move the tail around to get the last few seconds of regulation. I think what's happening is that the balance screws get the timing >90% of the way to in beat. The author states that the spring is made more or less stiff by this adjustment, but I think that's part of the telephony, and a red herring. The flexure of the flexible frame at the origin on the hairspring is not quite defogging for me. Then the "0.1s/d" cam acts on the mounting point through the lever terminating in the "+/-" screw point (obviously not directly on the tail as the author states) for the fine adjustment. Then you have the "+/-" screw for sort of a medium adjustment. I think what's happening is the balance screws are a coarse adjustment as in a free sprung balance. To wit as an example, he states that the adjustment tail of the hairspring goes 270° all the way around to the "0.1s/d" cam screw, when one can clearly see that leg of the spring only goes 180° to the "+/-" adjustment screw. Need a manual for your Diesel DZ5570 Watch Below you can view and download the PDF manual for free. Clearly a game of telephone, as he admits to not being a watchmaker, and only having talked to one who is not actually involved in the engineering of the system, so it's possible some things are lost in translation.
0 Comments
Leave a Reply. |