Omega

georgeszaslavsky
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off topic about movements

Hi Markus

There are people who owned the Blancpain Yachting Monaco series and who have known failures with the 1185 piguet based chronograph. The 1285 edition speciale de luxe  aka 33xx was never meant to be a heavy duty chrono movement. One screw retains and fixes the rotor on the 1285 whereas a screw along with a ball bearing retain the winding system on the 7750 and on the 5100 which is a certified military chronograph movement  with a jeweled pivot system retain the winding sytem. The lemania was the tallest movement 8.2mm of height and 31 mm of diameter against 7.9 mm of height and 30 mm of diameter for the 7750, it also had nylon autolubricating parts that allowed its use under extreme conditions. The 5100 was mostly found in military watches like the orfina, heuer, tutima and sinn chronographs. The 5100 was mainly innovative by its greta legibility, reliability and extreme durability which was far superior to the 7750 on all counts. But anything lemania has always been better made than anything valjoux, those are not news.Generally a bidirectionnal winding allows a winding a both directions so therefore a more regular winding and better transmission of the winding torque of the mainspring as compared to an unidirectional movement where the rotor can be stuck.  

Now about the 2892 and the 2824, well they are affordable good quality movements but they remain what they are, just others run of the mill eta which are aboslutely nothing comparable in terms of quality and reliability to vintage Omega or even vintage/modern Rolex. A manufactured movement has more merits than something subcontracted and available in hundred thousands of units, quality of construction, reliability, quality control and finish aren't the same.    

We agree to disagree

Respectfully and have a great evening

best regards

georges