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ETA 2824 clone low frequency and other differences?

andrewmayer
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andrewmayer Member

andrewmayer

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As a newbie, I have purchased a cheap chinese clone ETA 2824-2 from Ebay to practice disassembly/assembly without risking ruining a proper Swiss movement.

Original ebay listing: https://ebay.us/nsi2hB

On my timegrapher, I notice that it's running at 21,600 bph as opposed to the expected 28,800 bph (4Hz). I realise that is probably because it's a clone, and so I was wondering which parts of the movement are likely to be different to a proper 2824? And which parts make the frequency lower than an authentic movement? What differences should I look out for? 

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jdm Distinguished Member

jdm

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Not all Chinese "2824" have a lower frequency, not all are made to the same standards, not all have the same differences to the original, of for that matter are made at the same factory. In short, unless one is very familiar about the provenience and grading, there is no way to know before you get into your hands. That is the same point Mark is making in his videos

 

 

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