Hello, new to this forum. I started collectioning last year with a lot of “bad” purchases. But now Im focussing on more affordable nice watches. I bought a watch with a micro rotor ( Hangzhou 5000A ) and like to know if anybody knows the Yema CMM.2 movement. Is this a Hangzhou or a Seagull ST3621 or a true in house?
Hello, new to this forum. I started collectioning last year with a lot of “bad” purchases. But now Im focussing on more affordable nice watches. I bought a watch with a micro rotor ( Hangzhou 5000A ) and like to know if anybody knows the Yema CMM.2 movement. Is this a Hangzhou or a Seagull ST3621 or a true in house?
I'm also interested by the Hangzhou 5000A (i'm searching to buy them as ♻️ non-working ♻️ for parts or repair first ... as i do for ST19 & NH35 / NE57)
did you manage to find a single Seagull ST4020 ? this micro-rotor was announced in 2011 ... news ?
i'm a little sceptical about the no documentation - no parts politics of these chinese brands (Seagull does not provide technical documentation & Hangzhou is worse 🤔 ) : my only solution is to buy non-working ones to fix others ... but they should give technical data to help hobbyists ... otherwise ...
- seems that the ST19 could have a balance wheel (not stud) compatible with the ST25 ? is that true ?
- seems that the Hanghzou could have parts compatible with the 2824 or 2892 "architecture" (dont know what it means ?) is that true ?
Here is the caliber listing for the Yema caliber CMM.20: https://calibercorner.com/yema-caliber-cmm-20/
Baltic uses the Hangzhou 5000A too. Maybe they made a deal with the manufacturer for components and technical details? And NO, I havent seen a single Seagull ST4020. Can imagine that you find it annoying these Chinese brands do not enough for hobbyists, but Im more a researcher than a technical guy. So I like the fact that some things are not clear (yet) .Hello, new to this forum. I started collectioning last year with a lot of “bad” purchases. But now Im focussing on more affordable nice watches. I bought a watch with a micro rotor ( Hangzhou 5000A ) and like to know if anybody knows the Yema CMM.2 movement. Is this a Hangzhou or a Seagull ST3621 or a true in house?
I'm also interested by the Hangzhou 5000A (i'm searching to buy them as ♻️ non-working ♻️ for parts or repair first ... as i do for ST19 & NH35 / NE57)
did you manage to find a single Seagull ST4020 ? this micro-rotor was announced in 2011 ... news ?
i'm a little sceptical about the no documentation - no parts politics of these chinese brands (Seagull does not provide technical documentation & Hangzhou is worse 🤔 ) : my only solution is to buy non-working ones to fix others ... but they should give technical data to help hobbyists ... otherwise ...
- seems that the ST19 could have a balance wheel (not stud) compatible with the ST25 ? is that true ?
- seems that the Hanghzou could have parts compatible with the 2824 or 2892 "architecture" (dont know what it means ?) is that true ?
I found this https://www.alibaba.com/product-detail/In-stock-of-Chinese-Hangzhou-5000A_1600478419946.htmlBaltic uses the Hangzhou 5000A too. Maybe they made a deal with the manufacturer for components and technical details? And NO, I havent seen a single Seagull ST4020. Can imagine that you find it annoying these Chinese brands do not enough for hobbyists, but Im more a researcher than a technical guy. So I like the fact that some things are not clear (yet) .Hello, new to this forum. I started collectioning last year with a lot of “bad” purchases. But now Im focussing on more affordable nice watches. I bought a watch with a micro rotor ( Hangzhou 5000A ) and like to know if anybody knows the Yema CMM.2 movement. Is this a Hangzhou or a Seagull ST3621 or a true in house?
I'm also interested by the Hangzhou 5000A (i'm searching to buy them as ♻️ non-working ♻️ for parts or repair first ... as i do for ST19 & NH35 / NE57)
did you manage to find a single Seagull ST4020 ? this micro-rotor was announced in 2011 ... news ?
i'm a little sceptical about the no documentation - no parts politics of these chinese brands (Seagull does not provide technical documentation & Hangzhou is worse 🤔 ) : my only solution is to buy non-working ones to fix others ... but they should give technical data to help hobbyists ... otherwise ...
- seems that the ST19 could have a balance wheel (not stud) compatible with the ST25 ? is that true ?
- seems that the Hanghzou could have parts compatible with the 2824 or 2892 "architecture" (dont know what it means ?) is that true ?
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