Black Bay is 15 seconds fast after 24 hours

[Runnin' Rebel]

I've had it for about 3 months or so but haven't worn it until yesterday. I timed it to Time.gov. Should I give it a few weeks to work it self out ? I haven't taken it off since I put it on yesterday 40 winds to power it up.

Any input, I would appreciate it
Thank you

[Old Expat Beast]

Sure, wear it for a few weeks, and reset it every couple of days, so it knows what's what. My Milgauss went from 15 seconds per day to ten seconds per month after a while.

[samsam]

What's going on with the blackbays? Acting up around the holiday season? Is it a full moon out there?

No really, I'm starting to get a tad concerned, I'm going to check it out for the first time on Saturday and hoping I'd love it.
Good luck and keep us posted.

[Jake B]

Originally Posted by SamSam

What's going on with the blackbays? Acting up around the holiday season? Is it a full moon out there?

No really, I'm starting to get a tad concerned, I'm going to check it out for the first time on Saturday and hoping I'd love it.
Good luck and keep us posted.

Well there's several million ETA 2824 movements out there for decades now.

[Jake B]

It might settle down or it could be magnetised . First thing try giving a full wind so that the power's being distributed evenly as ETA tend to run a little fast when low on power reserve.

[U5512]

Originally Posted by JAGERVEGAS

I've had it for about 3 months or so but haven't worn it until yesterday. I timed it to Time.gov. Should I give it a few weeks to work it self out ? I haven't taken it off since I put it on yesterday 40 winds to power it up.

Any input, I would appreciate it
Thank you

That is typical ETA 2824-2 accuracy. They tend to run fast from the factory and they won't slow down either. If you want better accuracy then the caseback needs to come off for regulation.

[Rashid.bk]

Originally Posted by Jake B

It might settle down or it could be magnetised . First thing try giving a full wind so that the power's being distributed evenly as ETA tend to run a little fast when low on power reserve.

Completely agree. It's a new watch, in my opinion give it some time to settle in and wind it as Jake suggested.

[Runnin' Rebel]

Originally Posted by Jake B

It might settle down or it could be magnetised . First thing try giving a full wind so that the power's being distributed evenly as ETA tend to run a little fast when low on power reserve.

Originally Posted by Rashid.bk

Completely agree. It's a new watch, in my opinion give it some time to settle in and wind it as Jake suggested.

Yes, from the original post I did say that I did a full wind, I'll give a few weeks to calm it down

[padi56]

Originally Posted by Jake B

It might settle down or it could be magnetised . First thing try giving a full wind so that the power's being distributed evenly as ETA tend to run a little fast when low on power reserve.

Its very very doubtful the watch is magnitised although in general they do speed up,normally they run very very erratic and some stop and refuse to start.

Originally Posted by U5512

That is typical ETA 2824-2 accuracy. They tend to run fast from the factory and they won't slow down either. If you want better accuracy then the caseback needs to come off for regulation.

Well the 2824-T2 that's in the Tudor range is a chronometer spec movement there are 5 grades in most of the ETA line the two top grades are chronometer spec movements.Now nearly all new watches need time to settle in even a Rolex,and seeing this one has not been worn for 3 months since buying.It needs time to settle in and regularly worn for a month or so.Then do a accurate test over at least 5 days,then if accuracy is still say over a average of 5- 10 seconds a day have it regulated.But even 15 seconds fast out of 86400 seconds in a day is still 99.985% accurate.

Originally Posted by JAGERVEGAS

I've had it for about 3 months or so but haven't worn it until yesterday. I timed it to Time.gov. Should I give it a few weeks to work it self out ? I haven't taken it off since I put it on yesterday 40 winds to power it up.

Any input, I would appreciate it
Thank you

[Racerdj]

I hope it slows down for you.

[Mystro]

That's way out of spec. A watch might settle in a second or two but never more than that. I have personally never seen my watches "settle" in more than a second with years of time. That ETA is capable of one second a day accuracy. In fact there is nothing inferior about your ETA movement over a Rolex in-house movement.

[Vittorio77]

OMG!!! It wouldn't fit Mr. Ocean and his 11 friend!

[Jake B]

Originally Posted by padi56

Its very very doubtful the watch is magnitised although in general they do speed up,normally they run very very erratic and some stop and refuse to start.

Well the 2824-T2 that's in the Tudor range is a chronometer spec movement there are 5 grades in most of the ETA line the two top grades are chronometer spec movements.Now nearly all new watches need time to settle in even a Rolex,and seeing this one has not been worn for 3 months since buying.It needs time to settle in and regularly worn for a month or so.Then do a accurate test over at least 5 days,then if accuracy is still say over a average of 5- 10 seconds a day have it regulated.But even 15 seconds fast out of 86400 seconds in a day is still 99.985% accurate.

Not so doubtful, my friend. In fact, it's VERY common these days. Although a severely magnetised watch will often be erratic and will run quite fast (minutes a day, or even hour), watches that are magnetised to a lesser degree will simply show a quicker daily rate as a sympton. Magnets are everywhere, and people often will rest a watch on a speaker, a clock radio (speaker), laptops, etc etc etc. I'm certain of it, mate. I see watches in my shop quite often magnetised to some small degree, and the rate will slow right down to normal after demagnetised.

[padi56]

Originally Posted by Jake B

Not so doubtful, my friend. In fact, it's VERY common these days. Although a severely magnetised watch will often be erratic and will run quite fast (minutes a day, or even hour), watches that are magnetised to a lesser degree will simply show a quicker daily rate as a sympton. Magnets are everywhere, and people often will rest a watch on a speaker, a clock radio (speaker), laptops, etc etc etc. I'm certain of it, mate. I see watches in my shop quite often magnetised to some small degree, and the rate will slow right down to normal after demagnetised.

Would agree to a point but very doubtful if its a consistent daily gain.

[Jake B]

Originally Posted by padi56

Would agree to a point but very doubtful if its a consistent daily gain.

Hate to seem difficult, but I see it quite often, padi, in both Swiss and Japanese mechanical movements. I'm a custom dive watch maker by profession, mate. To be honest it's even seen in brand new, out of the box movements. Often, after I've done a build, and I see that a watch is running a steady +20 (for example) on the timegrapher, I'll demagnetise it, and the rate will come down to an acceptable daily rate without any regulation. (approx +5 to +10 sec/day)

[anothernewphone]

Don't forget that there's no claims for -4/+6 on the Tudor models. They're not COSC.

Does that mean something to everyone here? No, there's plenty of anecdotal evidence from people saying their Tudor is the most accurate watch they've ever owned, but facts are facts, the ETAs in the Black Bay are not always going to be "superlative."

[kilyung]

Mark,
Just check to see if it's consistently fast, then take it to get regulated.

[Tudor Fan]

Originally Posted by Old Expat Beast

Sure, wear it for a few weeks, and reset it every couple of days, so it knows what's what. My Milgauss went from 15 seconds per day to ten seconds per month after a while.

My BB was 15 sec/day off when new. After a few weeks it came down to 7sec/day and after about three month it was down to 3.5/sec/day, which is within COSC specs (−4/+6).

[Laszlo]

My new Sub-C ND was +15 for the first few weeks then settled down to spec. But honestly, I don't care that much. My DJ is insanely accurate. Spooky actually.

[Cc1966]

Had more than one new watch over 15sec fast/day...needed time to break-in (about two weeks I say +/-).

[Z-Sub]

Originally Posted by Jake B

Hate to seem difficult, but I see it quite often, padi, in both Swiss and Japanese mechanical movements. I'm a custom dive watch maker by profession, mate. To be honest it's even seen in brand new, out of the box movements. Often, after I've done a build, and I see that a watch is running a steady +20 (for example) on the timegrapher, I'll demagnetise it, and the rate will come down to an acceptable daily rate without any regulation. (approx +5 to +10 sec/day)

Had to agree. I bought a demagnetizer for this exact reason. My wife's watches gets magnetized several times a year. rarely but mine too. wonder why? She uses hairdryer all the time maybe that was the cause? When I timed them, they actually did run pretty consistently with same deviation daily until I demagnetize them then they ran accurately again. Probably not magnetized strong enough to cause erratic timing. This happened to her DJ and SS Daytona and my Submariner in the past. It was much easier for me to spend a few dollars for the demagnetizer than to drive to watchmaker or send to Rolex to have one checked out.

[Chainring]

I got mine this past July and it was +10. Now it is closer to +6 or better. Maybe it will settle in.

[Runnin' Rebel]

Originally Posted by kilyung

Mark,
Just check to see if it's consistently fast, then take it to get regulated.

Thank you Mike
Now it's 27 seconds fast, I did a full wind again last night.

I just reset it and I'll check it everyday at this same time for 5 days, fully wind again. I'll leave it alone until next Thursday.

EDIT: I'll wear it for 5 days without winding it and re check it then

[TimeOnMyHands]

We almost need a category to repeatedly discuss actual accuracy vs. expected accuracy. On and on we go...

It it meets the COSC it is guaranteed to, enjoy it. If not - take it back and get it fixed.

If your new Z06 Vette doesn't run the manufacturer/dealer advertised time - you take it back and have it tuned until it does. No special break in. That is now really just a fallacy. Either it meets factory specs or it is replaced/repaired at their expense until it does.

I have never read the page in a Rolex manual where it discussed Movement Break In...

[Old Expat Beast]

Originally Posted by TimeOnMyHands

We almost need a category to repeatedly discuss actual accuracy vs. expected accuracy. On and on we go...

It it meets the COSC it is guaranteed to, enjoy it. If not - take it back and get it fixed.

If your new Z06 Vette doesn't run the manufacturer/dealer advertised time - you take it back and have it tuned until it does. No special break in. That is now really just a fallacy. Either it meets factory specs or it is replaced/repaired at their expense until it does.

I have never read the page in a Rolex manual where it discussed Movement Break In...

Does the BB come with any kind if timekeeping guarantee? I doubt it. And since it is not COSC certified, you can't return it if it runs outside those specs.

[Jake B]

Originally Posted by TimeOnMyHands

We almost need a category to repeatedly discuss actual accuracy vs. expected accuracy. On and on we go...

It it meets the COSC it is guaranteed to, enjoy it. If not - take it back and get it fixed.

If your new Z06 Vette doesn't run the manufacturer/dealer advertised time - you take it back and have it tuned until it does. No special break in. That is now really just a fallacy. Either it meets factory specs or it is replaced/repaired at their expense until it does.

I have never read the page in a Rolex manual where it discussed Movement Break In...

Well, it's not a Rolex, and it's not COSC certified.

[DJJon]

Funny how there are regular posts about how non-important COSC is with Rolexes, but then when a Tudor doesn't carry the COSC certification there's all sort of agreement undergoing COSC makes Rolexes better for having it.

I like the definition of expected performance that a COSC cert brings to the owner. Now we all realize that meeting COSC is not particularly hard for a watch movement manufacturer to achieve in today's world, which is not the point. The point is the OP is dissatisfied at +15 sec/day and really has no direct manufacturer's claim that his watch is failing to meet.

[Tudor Fan]

Originally Posted by TimeOnMyHands

I have never read the page in a Rolex manual where it discussed Movement Break In...

But you did read about movement-break-in on this forum over and over again.
At least I have. And then I experienced it on my BB.

[Cc1966]

Originally Posted by Tudor Fan

But you did read about movement-break-in on this forum over and over again.
At least I have. And then I experienced it on my BB.

Concur, break-in is a fact with many mechanical watches, not a theory.

[Singslinger]

My BB has kept excellent time from day 1, which was about 4 months ago.