126710 BLRO running slow

[KeobNepo]

Hi guys,

Just a quick question. I noticed my Pepsi is running about 4 sec’s behind a day. I clocked the last 2 days and I lost about 8 sec.

I know it should run +/- 2 sec’s a day, so should I bring it for service? It’s under guarantee, but would feel bumped to ‘lose’ the watch for two months.

Thx a lot in advance for your comments.


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[aboutadog]

Give it a few weeks. Let it get used to your wearing patterns. Try resting it dial up overnight to gain a few seconds back. Keep us posted.

[Driver8]

While it’s technically out of Rolex’s +/-2 secs, it’s still within COSC which is good enough for most people. Personally I don’t think -4 secs is worth cracking the case open for, as you could end up introducing other issues and you’ll be without the watch for a while. If it was mine I’d just keep a casual eye on it for a while, and if it starts getting worse (and for me that means approaching -10 secs a day) then that’s the time to consider sending it in IMO.

[brandrea]

Originally Posted by Driver8

While it’s technically out of Rolex’s +/-2 secs, it’s still within COSC which is good enough for most people. Personally I don’t think -4 secs is worth cracking the case open for, as you could end up introducing other issues and you’ll be without the watch for a while. If it was mine I’d just keep a casual eye on it for a while, and if it starts getting worse (and for me that means approaching -10 secs a day) then that’s the time to consider sending it in IMO.

This ^^^

[Harry-57]

Originally Posted by Driver8

While it’s technically out of Rolex’s +/-2 secs, it’s still within COSC which is good enough for most people. Personally I don’t think -4 secs is worth cracking the case open for, as you could end up introducing other issues and you’ll be without the watch for a while. If it was mine I’d just keep a casual eye on it for a while, and if it starts getting worse (and for me that means approaching -10 secs a day) then that’s the time to consider sending it in IMO.

Agree.

[Porschen]

If the watch is brand new, I’d give it some time as was mentioned. If it isn’t, I’d send it in if it bothers you. My 124060 runs about 3 secs slow per day; it doesn’t bother me enough to address it at this time.

[the dark knight]

I wouldn't. -4s/day certainly wouldn't bother me. Also would suck to be without the watch, and what if another more serious issue arose during the warranty period and I have to send it in again?

So I would wait until the timekeeping gets a lot worse and/or another problem arises and then send it in. If it stays at -4s/day, I would wait until right before the warranty ends and then just send it in.

[Watcheroo]

I wouldn’t worry about it. I’ve actually never tested any of my watches to check for cosc spec.

[Mystro]

First, wind it up all the way (60 turns). It can’t be over wound even if you wind it 300 times.
Next, reset it to an atomic clock and sit the watch face up overnight when not wearing it.

[WilsonCQB1911]

When you say "all day" are you wearing it to bed? Can you be more specific about the wearing habits? Do you wear it 12 hours and then put it on a nightstand face up for 12? My new Sub loses 1-1.5 seconds on my wrist wearing 12ish hours a day and then regains that at night face up. If I wear it to bed I can expect to lose another second and "keep the loss.". It's interesting to know but maybe not that big of a deal to me.

With fall approaching I'm curious to see how the cooler temperatures change the rate. I've heard that cooler weather will causes the rate to increase.

[Easy E]

Sure enough, give it a full wind, per Mystro post. Wear it for a while - ambiguous target - maybe a month. Give this a bit of time, then check.

[WatchSmith]

My 126710BLRO was about -3 to 4spd and I adjusted it yesterday. Now it’s +1-2spd. I’m a watchmaker and have the tools and timegrapher and it’s a fairly easy procedure. If you can find a local watchmaker who can work on Rolex he might be able to increase the rate a bit for you.

[Oytun]

Originally Posted by Triplock

My 126710BLRO was about -3 to 4spd and I adjusted it yesterday. Now it’s +1-2spd. I’m a watchmaker and have the tools and timegrapher and it’s a fairly easy procedure. If you can find a local watchmaker who can work on Rolex he might be able to increase the rate a bit for you.

Opening case back of a new watch won't affect the warranty? Not sure if RSC can tell if case back is opened or not though

[PepsiBezel]

After about 1 year, my 126710 started running -4 s/d slow, and outside the Rolex superlative chronometer guarantee. I took it to an RSC and they fixed it and regulated it to +0.6 s/d. It took about a week.

It was likely a 3285 issue that was causing mine to loose time. I would take it in and get it resolved.

[KeobNepo]

Thx guys.

As for more info. I’ve had the watch for a little over a year now and wear it day and night.

Have not checked before if the watch keeps time, as I can remember it loses 1/2 minutes each time I have to adjust the date; so this is every one/two months.

As adviced I will take it off at night and let it rest face up to see if it gains a little during the night.

To have a better view of the average lose I will clock again in about a week and let you guys know.

But I understand that for the most of you this would not be a reason to send in the watch.

Thx again for the comments.


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[saxo3]

Originally Posted by KeobNepo

Thx guys.

As for more info. I’ve had the watch for a little over a year now and wear it day and night.

Have not checked before if the watch keeps time, as I can remember it loses 1/2 minutes each time I have to adjust the date; so this is every one/two months.

As adviced I will take it off at night and let it rest face up to see if it gains a little during the night.

To have a better view of the average lose I will clock again in about a week and let you guys know.

But I understand that for the most of you this would not be a reason to send in the watch.

Thx again for the comments.

Sent from my iPhone using Tapatalk

A loss of 30 s in one or two months is quite accurate for a mechanical movement.

Dial up overnight is a very good test to compensate for the small loss.

For complete 32xx winding you need 35-40 full crown turns, 360 degrees each; measurements you find here:
https://www.rolexforums.com/showpost...postcount=1704

[padi56]

Originally Posted by KeobNepo

Hi guys,

Just a quick question. I noticed my Pepsi is running about 4 sec’s behind a day. I clocked the last 2 days and I lost about 8 sec.

I know it should run +/- 2 sec’s a day, so should I bring it for service? It’s under guarantee, but would feel bumped to ‘lose’ the watch for two months.

Thx a lot in advance for your comments.


Sent from my iPhone using Tapatalk

No its been tested by Rolex on a machine to this precision -2+2 a day this dont mean it will perform exactly the same every day for life.As on the wrist wearing or off wrist resting there are many variables.Try different resting positions when off the wrist, and try giving your watch a full manual wind then perhaps you might gain back a few seconds out of 86400 in a day.

[JacksonRain]

Originally Posted by padi56

No its been tested by Rolex on a machine to this precision -2+2 a day this dont mean it will perform exactly the same every day for life.As on the wrist wearing or off wrist resting there are many variables.Try different resting positions when off the wrist, and try giving your watch a full manual wind then perhaps you might gain back a few seconds out of 86400 in a day.

OP the dial up and dial down does not really apply each time for every watch. Like Padi mentions, you would have to test it. Crown up may be where it gains. Try dial down at night, dial up and crown up - see what if any makes the gain, and you should be fine.

Good luck

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[karnex]

If the watch is brand new, I'd wait a bit, as was suggested. If it's not new, and it bothers you, consider sending it in.

[travisb]

I'd keep an eye on it and give it some time.
Personally, 4 seconds a day wouldn't bother me.

[Dirt]

I wouldn't be too concerned as it's possible it's a feature of the model.
If statistics are anything to go by it may be a 75%er or a 25%er.
Keep an eye on it every few months and if it gets worse I would send it in to Rolex to be fixed.
Just don't let the warranty expire before you send it in though

[amh]

I wouldn't take it in for a 4s deviation. Too many variables to consider.
- How much are you wearing it?
- What activities? (Sitting at a computer? Running?)
- What position for overnight storage?
- Ever wind it?

I find that a fully wound watch actually doesn't keep the best time. The full wind is often recommended as the first step when diagnosing timing and I believe it's most useful when tracking the "start to finish" performance. However most watches will be in a state of "partial wind" most of the time and this will provide the most meaningful metric for most people. Since there's no power meter we don't know, but for various people it could be 30%, 40%, 50%... whatever. But it will very seldom be 90-100%. If you do the full wind test let it run down and track the time each day during that period. This will capture the natural variation as well and allow you to properly average the performance.

[WilsonCQB1911]

Originally Posted by amh

I wouldn't take it in for a 4s deviation. Too many variables to consider.
- How much are you wearing it?
- What activities? (Sitting at a computer? Running?)
- What position for overnight storage?
- Ever wind it?

I find that a fully wound watch actually doesn't keep the best time. The full wind is often recommended as the first step when diagnosing timing and I believe it's most useful when tracking the "start to finish" performance. However most watches will be in a state of "partial wind" most of the time and this will provide the most meaningful metric for most people. Since there's no power meter we don't know, but for various people it could be 30%, 40%, 50%... whatever. But it will very seldom be 90-100%. If you do the full wind test let it run down and track the time each day during that period. This will capture the natural variation as well and allow you to properly average the performance.

Good point. Also, wouldn't it presumably run faster with a lower wind? Lower amplitude generally runs faster right?

[saxo3]

Originally Posted by WilsonCQB1911

Lower amplitude generally runs faster right?

No.

[Gebbeth]

Uh oh.....35XX problems again?

[JacksonRain]

Originally Posted by Gebbeth

Uh oh.....35XX problems again?

What's that?

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[fmc000]

Originally Posted by JacksonRain

What's that?

Not again, please. If your answer is not provocative, please search in the Technical forum for the specific thread, thank you.

[padi56]

Originally Posted by fmc000

Not again, please. If your answer is not provocative, please search in the Technical forum for the specific thread, thank you.

Well there is no such thing as 35 movement problems as they have not made any 35 movements yet .

[worldofoyster]

just wear the watch, it's within spec

[LC23]

get a smart watch, never lose a second