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Is this normal? or is it exceptional?


aac58

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I've never done this test, should I? If this is what I should expect after cleaning I'm more than willing to do it, so I can have a clue of how the train is behaving before going any further. But with all gears mounted including the barrel it looks too good to me.

 

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Looks pretty normal to me. Should not expect any less. The true test is to mount the click and ratchet wheel and give it a few clicks of wind. What you want to see is the escape wheel turn backwards after the mainspring fully unwinds or even spin back and forth a few times.

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3 hours ago, CaptCalvin said:

Looks pretty normal to me. Should not expect any less. The true test is to mount the click and ratchet wheel and give it a few clicks of wind. What you want to see is the escape wheel turn backwards after the mainspring fully unwinds or even spin back and forth a few times.

This is the test I do, but not all movements turns backwards at the end, especially Seikos don't do that. I'll test the air puff and see what happens. I'm quite sceptical though.

Edited by aac58
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37 minutes ago, aac58 said:

This is the test I do, but not all movements turns backwards at the end, especially Seikos don't do that. I'll test the air puff and see what happens. I'm quite sceptical though.

Seiko's are just a bit more sensitive to cleanliness and lubrication. My recent 6r15 I serviced I made sure absolutely spotless under a microscope passed this test and gave me around 310 amplitude when some people settle with 240-250 with this particular movement. You don't need to give Seikos with 250 amplitude a free pass like so many people seem to do. They are absolutely capable of going well close to 300.

Edited by CaptCalvin
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