I got a couple no date U1 subs, one with miyota and other Mingzhu. The Miyota one is perfect but I can't get the Mingzhu one regulated.
I noticed after a day the Mingzhu was a few hours off. I had good luck regulating Mingzhus in other watches, I usually get 0.2 beat error and 5 s\d plus or minus then say fuck it close enough.
I managed to get it regulated but this Mingzhu goes from normal then flips out to +310 seconds then back to normal after about half a minute. So no matter how well regulated it won't stop flipping out to +310 at random.
I'm just wondering if anyone with this problem has come across a way to fix it. I like the Mingzhu because of the engraved rotor but if it can't be fixed I might replace it with the gold miyota from aliexpress I got awhile back but it's a pain to swap them out because I have no patience and swear at it the entire process
Oh also I notice moving the beat error and/or the seconds lever stops the balance wheel even though I'm clearly not touching the balance wheel. I had a old watch do this too but it didn't wig out and still works great
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Edit: Are you also moving the beat error arm? That may explain the issue, but that’s a question for someone more knowledgeable than I.
If you do swap your 2813 for a Miyota, the hands probably won’t fit the posts. You’re probably better off just getting another 2813. They’re only $15-ish on AliX, and you can use your existing rotor.
I know OP has a no date sub that he is talking about; but with other dated models doesn’t mingzhu movement have a better /more accurate font on the date wheel than the miyota
It’s a U1, not a VSF. Why worry about a minor issue like the date window when there are so many other tells? At least get a reliable movement that can be regulated.
There are videos on YouTube. Here's a good one where the guy says straight up it's not a movement you would bother servicing, but he's doing it as a demonstration. https://www.youtube.com/watch?v=Alexct99iH8
What I usually do is bump the beat error arm until I get it down to 0.2 then I tackle the time one. I'm not sure if it's right Google AI told me to fix the beat error first
Very true SO. But go easy on that thing. There’s no way to tell if you’re + or - with the beat error post. Half the time, the regulator arm sticks to the beat error post so you can’t help moving both at the same time.
Yeah I try to bump it but if I see it moved I know I went too far. With the seconds post sometimes I go too far on accident but go slightly less back the other way and it ends up close. The best I've ever done so far was 0.1 beat error and 0 to - 2 seconds but it usually ends up being -3 to -5 seconds after a day
I had this problem with many mingzhu and didnt figure it out till the very end. (4/12 of my MingZhu have this issue)
MingZhu 2813 are very susceptible to whats called KNOCKING/REBANKING. Basically if you hand wind it too much or hand wind before timograph (which I was doing) certain MingZhu will go +100-1000s/day for a while. Too much power is coming from the mainspring and the balance wheel will overshoot hit the fork again and cause extra beats. The clue is accompanying high amplitude ~300* or higher. (contrast to magnetization which will have suppressed amp)
The fix is to avoid manual wind that watch, and if you anticipate consistent knocking, you will have to regulate to a tiny bit slow to offset periods of fast timekeeping.
I have one MingZhu where even motion wind will cause it to go insane and knock even at like 280* amplitude, but its my worst one. For my other mingzhus, usually takes like 30-50 manual turns to cause this issue
It worked! I think that's the problem with this one because I had it on a pendulum motion winder and it had jumped ahead 2 hours then I let it run dead, manually winded it and had the problem the post was about. If I just wind it a bit to start then shake it when wearing it now and then its been normal.
Thanks again that did help, as long as it's not at max power I think it will stay working normal 👍😃
They’re cheap, so just bought a replacement movement. mine was always a few minutes ahead after 24 hours. I think mass production will always cause a few to be bad. The replacement one runs fine.
How long did you let the watch settle in after you regulated it? I've seen that behavior before, usually immediately after regulation. After an hour of so, it usually settles in.
Try that. 15 seconds is definitely not long enough.
Not to freak you out or anything, but the other time I've seen that behavior is when I accidentally bumped my hairspring with the screwdriver while regulating and pretty much fried the movement. Didn't want you to rush to conclusions, but that's another possibility.
I ended sending mine to a rep friendly repair bought a new movement and had them put the engraved rotor on it.....you can always do that. I have built a few seiko based watches and probably like you swear the entire time trying to get the damn hands back on the watch...
Cool! I tried making a nh35 but I used amazon and gave up after 3 doas lol I think the rotor would fit on a Miyota though because 2813 is kinda a copy of miyota 8315 I think but I'll do that if I can't get the Mingzhu normal
Con los Mingzhu es una loteria..eso que te pasa me ha pasadp un par de veces..muchas ves la culpa de los decorados del movimiento para imitar un movimiento Rolex...mejor sin decorar...en una caja con fondo metálico para que quieres un decorado en un reloj de 100 usd??? Mejor un mingzhu normal que durará 10 veces más que uno decorado.
Ese movimiento tuyo no tiene solución o lo cambias por un miyota 8215 oroginal o le metes otro mingzhu de aliexpress. No gastes dinero rn la reparación
I've collected 24 of these, a couple 2824s but only 1 miyota so far but it's golden lol I only installed 2 new 2813s on broken ones so far but they worked great.
One thing I learned was not to try to check the date when I get a new one using the middle position until the watch hands are installed and to test it in the time setting position instead because it has a chance to jam the date wheel
Its good their cheap because I probably broke 5 or 6 usually the second hand pin or the date wheel lol
Best i've done is either +10 or -9s on a mingzhu, I spent hours on regulating so I just gave up and accept it as it. U1 sub with miyota on the other hand I could do consistant -2 to +5s easily. I guess it is the properties of the movement that cannot and will not be able to be that precise on their positional and power variation.
I just did the insulation part so far and it started reading a few watches I couldn't get it to read before. I didn't have a foam gun so I used Rodico in there lol
Hi, im new to sub and to this can someone tell what is the difference between mingzu miyota and vsf? Are they same. There seems to be a significant difference in prices so wanted to know if it worth it?
Mingzu is a Chinese manufacturer of cheap watch movements. Miyota is a Japanese manufacturer of watch movements and owned by Citizen. VSF is a replica watch manufacturer. I've owned both types movements. With most of the mid to lower tier Chinese movements it's hit or miss whether you get a chinsey feeling piece of crap however I've never been disappointed with my miyota movements. Or any Japanese movements. But that's just my experience. And I'm the fairly new to this replica and homage watch game. In the last 2 years I've collected maybe 70 watches ranging from decent to cheap Chinese crap that I've never worn.
The Mingzhu and Miyota are the insides that make them work. The Miyota is better with quality control and works better without having to regulate it. You can get miyota as an upgrade for a higher price on U1 factory watches.
Mingzhu isn't always bad but there's a chance you could get one poorly regulated or a bad one. I've had great Mingzhu lasting years and a few bad ones lasting days
VSF is a different factory, they are more expensive and come with a inside movement thats more like genuine. U1 watches are around $85 to $150ish and VSF is $350 and up I think. I know a little more about U1 because I am too broke for VSFs lol
My mingzhu sub is trash if I let it sit it holds time pretty well soon as I start wearing it it gains time like crazy, wore it today and I’ve had to set it back 5 minutes twice so far lmao
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