Probabil brandul Chrono...Swiss nu merge tocmai bine cu Made in Germany dar este un brand cu origini germane iar noul mecanism face in sfarsit dreptate.






the caliber which will be used for the 2009 chronometric contest


Lucian Marcu scrie:Cronoswiss Sauterelle ...
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Insa din ce am citit am inteles ca uneori secundarul nu cade perfect pe liniile ce desemneaza minutele de pe cadran.Technically speaking, we have not cut corners with this movement. Firstly, the pinions and wheels are very hard - around 730 Vickers. This is very difficult to produce, but I am thinking long-term. Even after ten years, there should be no abrasive damage to the load-bearing surfaces, which will remain smooth and relatively frictionless due to their hardness.
I also thought carefully about the actual shape of the pinions, and have modified and optimised them in order to further reduce friction.
Hard pinions require three separate manufacturing steps: milling, then hardening, then polishing.
The mainspring is very thin... it has two advantages. Firstly, there is less torque, which means less wear. Secondly, we can fit more windings into the barrel, which means a longer power reserve. I have also devised a system to stop the individual coils of the mainspring rubbing against each other as the spring unfurls. It's quite ingenious!
user scrie: ...
Insa din ce am citit am inteles ca uneori secundarul nu cade perfect pe liniile ce desemneaza minutele de pe cadran.