Brand new BLNR watch 3186 movement running fast

[rollee1]

I just started to wear my brand new BLNR yesterday.
In the last 24 hours, it has gained 12.5s, running like a speeding bullet.

Am I too fast to be concerned of a faulty movement?
Is there a stabilization period for a brand new watch?

Suggestions and ideas are appreciated.

[Tyl3r]

That is definitely out of COSC specs. I would fully charge the watch. Then set the time using www.time.gov. Check if the watch is still having this issue for another day. If it is, bring or sent it to a RSC for warranty service.

[rollee1]

I'm using greenwichmeantime.com as my reference.
Winded 40 times before bed last night and went about my normal office daily routine.
At 24 hours I checked my reference which shows time gained.
Yesterday was the first time I used the watch, since purchase 2 weeks ago, I'm surprised to see the difference on the brand new watch from AD.

[Old Expat Beast]

That's very fast, but can be regulated under warranty.

[I-luv-Rolex]

If you wear it for a few hours every day doing normal office work, you don't need to manually wind it every night. I think you are over winding it.

I would wear it at least a few hours every day and check in a few days to see if you have a problem.

[Old Expat Beast]

Originally Posted by I-luv-Rolex

If you wear it for a few hours every day doing normal office work, you don't need to manually wind it every night. I think you are over winding it.

I would wear it at least a few hours every day and check in a few days to see if you have a problem.

You can't overwind it. And 40 winds is fine anyway. Even once a week to keep the mainspring topped up if desired.

[wolffram]

Originally Posted by I-luv-Rolex

If you wear it for a few hours every day doing normal office work, you don't need to manually wind it every night. I think you are over winding it.

I would wear it at least a few hours every day and check in a few days to see if you have a problem.

How do you over wind a Rolex?

[bdex75]

12.5 seconds per day is excessive. That is 6+ mins a month. I say wear it daily for a week or so, reset to your reference and check again. If it is still 12.5 seconds in a 24 hour period I say it needs regulated.

Isn't it a little odd that a cosc timepiece would get sent from the factory that far out of spec.?? Isn't -4/+6 the cosc spec??


Sent from my iPhone using Tapatalk

[rollee1]

I will keep monitoring on this for a few more days, if I should visit RSC on Monday.

The watch was never winded before, I wind it up the first time (40 turns) yesterday to start it off and set the time. The crown is tight brand new.

[rollee1]

Originally Posted by bdex75

12.5 seconds per day is excessive. That is 6+ mins a month. I say wear it daily for a week or so, reset to your reference and check again. If it is still 12.5 seconds in a 24 hour period I say it needs regulated.

Isn't it a little odd that a cosc timepiece would get sent from the factory that far out of spec.?? Isn't -4/+6 the cosc spec??


Sent from my iPhone using Tapatalk

Indeed.
That's my plan for now, thanks.

[Charles Ford]

That's about twice the limit for accuracy for an COSC Chronometer, I would give it another week to settle in, if it doesn't get down to at least +5 seconds a day, I would take it in to have it regulated.

I have a Sub bought in 1996, serviced once, that was over 8 years ago, and it runs +4.

[padi56]

Originally Posted by rollee1

I just started to wear my brand new BLNR yesterday.
In the last 24 hours, it has gained 12.5s, running like a speeding bullet.

Am I too fast to be concerned of a faulty movement?
Is there a stabilization period for a brand new watch?

Suggestions and ideas are appreciated.

I would give it a full manual wind first 40 full crown turns clockwise only and test over 5 -10 days setting first with a reliable time source, like say a quartz watch.Then wear as normal say for 8 hours plus a day,check time once daily with same setting source write down loss or gain.Do this for 5-10 days then average out loss or gain.If then still way out of COSC spec take it back for regulation.Even now if watch is a consistent 12 seconds fast its a very accurate watch,and all is needed is simple regulation, consistency is the main factor with any mechanical watch but remember there are 86400 seconds in a day..

[TheBluePrince]

Sometimes that's just how they are. I've had watches back from RSC service running out of COSC, sent them back for regulating and they've come back still out of COSC.

Unless it's really out like a minute a day or something I wouldn't worry about it unless you have nothing else in life to worry about and really want something to bother you and fret about.

[travisb]

I'd give it a week or so of normal wear to see if things settle in on their own. If not, it's an easy adjustment.

[rokosh]

FWIW: all my Rolexes give me +/- 1~1.5 secs straight off the bat; my Omegas on the other hand need time to settle down. My Speedmaster triple date needed nearly a month to reach COSC standards- I very nearly developed multiple ulcers during this time!
Ditto with my PO2500; now my new Seamaster is in it's settling-in phase- runs something like +10secs over 24 hours.
Doesn't the Rolex manual say something about a three month settling in period to give enough time for the lubricants to reach all elements of the time-keeping mechanism?

[padi56]

Originally Posted by bdex75

12.5 seconds per day is excessive. That is 6+ mins a month. I say wear it daily for a week or so, reset to your reference and check again. If it is still 12.5 seconds in a 24 hour period I say it needs regulated.

Isn't it a little odd that a cosc timepiece would get sent from the factory that far out of spec.?? Isn't -4/+6 the cosc spec??


Sent from my iPhone using Tapatalk

With so many today on forum with accuracy OCD its most important to remember that a "COSC certified chronometer" is not the Holy Grail of watchmaking. With the high quality of modern day robotised manufacturing, this test is not that important in reality. As today most decent modern watches from all countries even some from China like the Seagull movements, when adequately adjusted, should be able to match the performance specified by the now quite antiquated Swiss COSC test.

A chronometer certificate is not a guarantee of future accuracy for life only a certification that the bare uncased movement was tested at the COSC and passed at time of testing. Watch movements that have been certified can get out of adjustment and still perform quite poorly outside the COSC spec. Movements that are not certified could still exceed the COSC standards with just simple regulation.Many of todays manufacturers may have simply chosen to bypass the expense of the certification process its quite expensive to test every single movement. But today IMHO the COSC is little more than a pure marketing tool and means little in actual performance only the fact its been tested at that time.

Now when the thousands of movements that get tested and then shipped back to the manufactures those that have passed plus the ones that fail yes some do fail even ones from Rolex.The failed movements are perhaps re-oiled tested then shipped back to the COSC to test again.Now a lot could happen to any movement on its way from being certified shipped back then stored then finally cased.In the case of Rolex they must have many thousands in store waiting to be cased then shipped around the world to the various ADs

The term "Superlative Chronometer" is a now trademark of Rolex. The addition of the word "Superlative" in front of the official designation of Chronometer is merely a Rolex marketing angle to give a more distinguished sound to the chronometer status of their products . As all watches that have earned the privilege of bearing the official Swiss designation of "Chronometer" have to meet the exact same C.O.S.C. standards for movements of Rolex size. Any words added before or after the official designation of "Chronometer" are merely more marketing which Rolex is very good at.There are not any different grades or levels of chronometer certification,for movements of Rolex size but Rolex would like you to think there are.


When thinking of accuracy its very important to remember that even when a mechanical watch is allowed to vary by COSC standards +6/-4 seconds per day, that does not mean it will consistently vary by that high or low amount each day. Mechanical movements that self regulate say by resting in different positions over night its very very rare for this to happen 100%.All Mechanical watches are noticeably affected by the gravitational pull of the Earth. It only takes a performance distortion of 1/1000th of a percent for a mechanical watch movement to be one second less accurate in a day. So to get any mechanical watch to self regulate with zero tolerance is IMHO something that's very very rare maybe one it quite a few thousand or even million

Likewise, "Certified Chronometer" also means nothing different than just "Chronometer." It is a redundant phrase--since Chronometer status is the certification the certified is just more pure marketing, and you know what they say about marketing well it often baffles brains.Now of course Rolex will do there best to keep the movements in COSC spec with regular service.

[watchwatcher]

Originally Posted by travisb

I'd give it a week or so of normal wear to see if things settle in on their own. If not, it's an easy adjustment.

x2.

[Robert Cross]

W Datejust, serviced just before purchase 4 weeks ago, +5/d, took 10 daze to settle at + 1 to 2 S/D. Give it a little time, it's a watch after all.

Bob

[2106]

I'd give it a few months. Mine gained accuracy after about 3 or 4 months. Try different resting when your not wearing it as well to self regulate.

If you are worried you can always ring the ad and ask for their opinion but I'm assuming it's fine to send back as long as it's within the warranty period.

[brandrea]

What Padi said

[jthop]

I am going through the same situation with my new BLNR as well. It's about 10 sec/day fast. I took it to RSC Dallas and it tests great on their machines. They say it is .5s/day fast. I tell them when on my wrist it's about 10 sec/day fast.

They asked my permission to do a wrist test, where their techs use another bracelet and wear the watch during the day to see the watch in a real world setting. I'm waiting on the results now, they said probably 1 or 2 weeks to test it.

[mike]

The important thing is that it runs a consistent 12.5 a day. If so it's indeed very accurate, just needs a simple regulation.

[joli160]

Originally Posted by travisb

I'd give it a week or so of normal wear to see if things settle in on their own. If not, it's an easy adjustment.

Even a bit longer, kinda like a running in program for an engine

[smellychips]

mechanical watches eh! ...who'd have thought back in the 70's & 80's when quartz where the new big thing, that by the end of the century well educated men would pay ten's of thousands of dollars/pounds for unreliable and not very accurate time pieces? ..... (waiting to get flamed ;-)

[Robert Cross]

I'm in the process of doing a wire transfer for a 70's Seamaster...the young man at the bank couldn't fathom why I was 'going thru' so much trouble to get a watch you had to wind. I could explain it to him, I couldn't understand it for him.

I tried....but I don't think he was convinced.

Bob

[Tools]

Originally Posted by mike

The important thing is that it runs a consistent 12.5 a day. If so it's indeed very accurate, just needs a simple regulation.

exactly.

nothing "faulty" with a watch that is ticking bit fast. it's a simple operation to set it right..

[stefanv]

This idea of watch movements "settling in" makes sense to me, and I've seen it myself in non-Rolex movements (sorry, don't own a Rolex). What I don't get is how this could be the case of COSC certified movements. Surely, any break-in that a movement requires would have had to have happened before the COSC testing, otherwise the testing would be worthless.

Perhaps Rolex adjusts the newly built movements to run within COSC specs, and since the COSC test is short (less than a week?), it remains within specs for that period. Then, since they know they movement still requires some break-in and will slow down, they readjust it after the testing is complete to speed it up by about 10s/d?

[brucewayne1959]

Originally Posted by travisb

I'd give it a week or so of normal wear to see if things settle in on their own. If not, it's an easy adjustment.

That's the ticket! Wear it for a time and then check and see. If its still off after a month of solid wear then maybe send it back for regulation.

[Rags]

Give it 40 turns & wear it normally for the day then check it the next day..

[Tools]

Originally Posted by stefanv

This idea of watch movements "settling in" makes sense to me, and I've seen it myself in non-Rolex movements (sorry, don't own a Rolex). What I don't get is how this could be the case of COSC certified movements. Surely, any break-in that a movement requires would have had to have happened before the COSC testing, otherwise the testing would be worthless.

Perhaps Rolex adjusts the newly built movements to run within COSC specs, and since the COSC test is short (less than a week?), it remains within specs for that period. Then, since they know they movement still requires some break-in and will slow down, they readjust it after the testing is complete to speed it up by about 10s/d?

Movements are tested in bulk. They are not in a watch, they do not have dials or hands or the auto-wind modules, they are bare movements. After passing the test they are simply warehoused. They are never tested again, ever. COSC uses standard ISO 3159; each uncased movement is individually tested for fifteen days, in five positions, at three different temperatures. It is the test that allows for a daily variation of -4/+6 (a 10 second swing) during testing; it is not what you should expect your watch to operate at regardless of how many Forum members seem to think that.

When they come out of warehouse, perhaps months later, they are "serviced" and fitted with the parts needed for the intended use, Sub, DJ, etc.