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3861 movement broken? *Update: Read First Post*

Y
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Archer Archer
There is no "gap 1" as the bushing is press fitted into the main plate and another into the barrel bridge. The bushing is of coruse fixed in palce and doesn't rotate.

Also, the way you have shown contact is not quite right. In addition to the contact with the circumference of the center wheel shaft, there is also a face (thrust) contact between the center wheel and the bushing.
I understood.
the bush on the 3861 only allows the wear of the centre wheel to stay in the bush without affecting the main plate, just like many low-speed wheels use bush, It's just that there is a deviation in the material of the bush that causes the 3861 problem
 
R
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I haven’t read through all 15 pages of this thread to see if this has been brought up already but it’s my understanding that in general chronographs shouldn’t be run past the capacity of the second subdial. So for example if the watch has a 12 hour subdial on the chrono then the chronograph shouldn’t be run for more than 12 hrs. I’ve read this in a few different places. So if a watch has a 38-42 hr power reserve (or 50 in the case of the 3861) then a low power reserve shouldn’t be an issue if you wind the watch each morning. But is this rule of thumb true about running the chrono for too long? Can @Archer comment on this.
 
Bugbait
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R rslev
I haven’t read through all 15 pages of this thread to see if this has been brought up already but it’s my understanding that in general chronographs shouldn’t be run past the capacity of the second subdial. So for example if the watch has a 12 hour subdial on the chrono then the chronograph shouldn’t be run for more than 12 hrs. I’ve read this in a few different places. So if a watch has a 38-42 hr power reserve (or 50 in the case of the 3861) then a low power reserve shouldn’t be an issue if you wind the watch each morning. But is this rule of thumb true about running the chrono for too long? Can @Archer comment on this.

That makes no sense to me. What is the reasoning behind this? There is a lot of false information on the Internet, shocking I know! Just look at all the misconceptions about WR ratings. I don't scour all the watch forums but I must say this is the first tie I've read this.
 
Archer
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R rslev
I haven’t read through all 15 pages of this thread to see if this has been brought up already but it’s my understanding that in general chronographs shouldn’t be run past the capacity of the second subdial. So for example if the watch has a 12 hour subdial on the chrono then the chronograph shouldn’t be run for more than 12 hrs. I’ve read this in a few different places. So if a watch has a 38-42 hr power reserve (or 50 in the case of the 3861) then a low power reserve shouldn’t be an issue if you wind the watch each morning. But is this rule of thumb true about running the chrono for too long? Can @Archer comment on this.

This is the first I've ever heard of this...
 
R
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Ok. Good to know! I read it recently (can’t find the article though) but it made no sense to me. But there’s a bit of debate online in other forums. Some mention that running a chronograph is like running a small seconds hand while others worry about extra wear and tear, especially because of the severe torques caused by the snap-back energy when resetting the hands on some models. I can see both points of view
 
zeiter
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Probably for Al (Archer):

With the upgrade information for the 3861 supplied by Omega, is there evidence that recent production was changed to include the changes to newly-manufactured movements -and- is it possible to determine that a new watch would have been completed with the upgraded movement based upon SN?

z
 
Archer
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Movements tend to be made in batches, so I'm sure if any have been made after the upgrade was needed, it would have been done. As far as I know, there's no way to tell.
 
zeiter
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Archer Archer
Movements tend to be made in batches, so I'm sure if any have been made after the upgrade was needed, it would have been done. As far as I know, there's no way to tell.

Thanks

z
 
B
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Got an update from the Boutique email I sent them (see below) and I ordered another one through an AD that ships fresh right from OMEGA 😀 Will give you updates once I get it and run up-down-through the paces.

From the OB manager:
We appreciate you reaching out and your concern on the 3861 movement. The two timepieces you've returned, after tests and diagnose, show no indication of manufacture defect on timekeeping or chronograph functioning. We were unable to duplicate the issues as both timepieces are within manufacture specification.

Our corporate will investigate the case further through proper channels and will keep you posted once they have updates on their end.

Thank you very much for your time. We wish you and your families good health and well-being.
 
O
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Hi ! New to the forum.

I bought a new 3861 and I suspect I have this issue but just want to confirm with this crowd, specifically because I know there are watchmakers here.

This happened two times but with different outcomes.

In the first one, I pressed the chrono and the watch automatically stopped. I wounded it a little bit and then pressed the chrono, the seconds time began running again. I pressed it again and the chrono resumed.

On the second one, I pressed the chrono and the watch again immediately stopped. However this time I gave it a wound and not the seconds and chrono seconds hands resumed.

Is either of these normal for the movement? I know in the second time that the watch was with very little power reserve.

thanks !!
 
Pazzo
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O OmegaBorder
Hi ! New to the forum.


...... I know in the second time that the watch was with very little power reserve.

thanks !!

Hi and welcome on board.

I would wind the watch properly and do what you did again and see what the outcome is.
 
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Thank you Archer for answering my question, and thank you everyone in this thread, I finally bought 1863 from my ad. Maybe I’m a traditional person, I don’t really like silicon balance spring and omega co-axial😉
 
WechatIMG18.jpeg
B
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I was notified that the Sapphire on Steel did not ship from the SwatchGroup and it was delayed. Not sure why but when I checked OMEGA site the only one the that looked ready to purchase was the Hesalite on Steel, the rest said:

Sorry, but this product is currently not available. Make sure you join the waiting list.

😕
 
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B Bry
I was notified that the Sapphire on Steel did not ship from the SwatchGroup and it was delayed. Not sure why but when I checked OMEGA site the only one the that looked ready to purchase was the Hesalite on Steel, the rest said:

Sorry, but this product is currently not available. Make sure you join the waiting list.

😕
Yes, When I ask some AD, They tell me the 3861 is new version, if I want to buy 186X, they will put me on waiting list(I think there is no reply)
I found last one stock from Sydney AD.
I try to buy from Chrono24, but they have some over price, and many dealer in USA, I need pay GST.
 
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Y yyau
Yes, When I ask some AD, They tell me the 3861 is new version, if I want to buy 186X, they will put me on waiting list(I think there is no reply)
I found last one stock from Sydney AD.
I try to buy from Chrono24, but they have some over price, and many dealer in USA, I need pay GST.
The USA process that I've previously used through my AD for my SMP, 1861 Hesalite and most recently a Hamilton. With those purchases (not waiting list) they process, sent to fulfiller SwatchGroup who normally has it out FEDEx next day within 24-48 business hours and a tracking number to me through the site/email.
So, it was strange to me to see it had "hung" at sent to fulfiller on my end. Then I got an email yesterday about a delay and they would let me know when there is an update.
 
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B Bry
The USA process that I've previously used through my AD for my SMP, 1861 Hesalite and most recently a Hamilton. With those purchases (not waiting list) they process, sent to fulfiller SwatchGroup who normally has it out FEDEx next day within 24-48 business hours and a tracking number to me through the site/email.
So, it was strange to me to see it had "hung" at sent to fulfiller on my end. Then I got an email yesterday about a delay and they would let me know when there is an update.
maybe the 186X is out of stock?
 
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Y yyau
maybe the 186X is out of stock?
Sorry for the confusion, ordered a 3861 last weekend. The 1861 was about a year ago.
 
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B Bry
Sorry for the confusion, ordered a 3861 last weekend. The 1861 was about a year ago.
B Bry
Sorry for the confusion, ordered a 3861 last weekend. The 1861 was about a year ago.
oh sorry about that, it should be COVID 19
many dealers have 3861 in stock in Australia
 
R
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So my AD let me return mine about a month ago. He contacted me that he got some more in. He said he will fully wind and run the chronograph on one to see if it makes it the full 60 hours without stopping. Im still torn if I should try it again. Knowing how backlogged the service centers are with these issues id hate for it to pop up down the road and have to send it off for 6 weeks etc.
 
Pazzo
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R richard371
......

... He contacted me that he got some more in. .....

I suppose that the ones he received have been seen to as regards the bushing "issue". .. but I understand your concerns.
 
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