Sudden time gain on my new Rolex and silent rotor

[PhilipJI]

I got a brand new Oyster Perpetual on Wednesday. It was given a good wind when it was purchased. Over the first two days when I checked, it had gained a second each day. Just checked it this evening and the gain had gone up to six seconds. Meaning it had gained 4 seconds in the last 24 hours.

The watch is being worn around 18 hours a a day.

Wondering if it's gained because it's not wound enough I've tried to listen if I can hear the rotor arm move. But can't hear a thing. Are they normally silent in a Rolex?

Just given it a another wind so I can check the accuracy tomorrow evening, but maybe I should have just left it so see if it gained more and then just stopped.

With not being able to hear the rotor, I wonder if its turning or not

Any ideas?

[Tools]

What makes you believe that it is the watch that suddenly gained the extra seconds; we need more information.

[PhilipJI]

Originally Posted by Tools

What makes you believe that it is the watch that suddenly gained the extra seconds; we need more information.

It was set against the stopwatch on my Iphone. So I could see how accurate it is.

On Wednesday evening when the second hand was at 12, I started the stopwatch. Thursday evening 24 hours later I could see it had gained one second, Friday evening another second, but tonight it had gone to a total of 6 seconds, so in the last 24 hours gained four seconds. I know from previous watches that they can gain if not wound enough.

[Nikrnic]

I wouldn't wind it anymore. I'd wear it and give it a week and see. I've had my new Milgauss for 4 days and after 40 winds at the AD I've been wearing it 24/7 it's been at +0- for 3 days today it's +2. so I'd say have patience.

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[PhilipJI]

Originally Posted by Nikrnic

I wouldn't wind it anymore. I'd wear it and give it a week and see. I've had my new Milgauss for 4 days and after 40 winds at the AD I've been wearing it 24/7 it's been at +0- for 3 days today it's +2. so I'd say have patience.

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I am going to leave it now and see what happens. But wishing I hadn't wound it today as I'd have seen how much more it gains, and if it stops.

But not being able to hear the rotor move, I'm wondering if it is moving.

[Dirt]

The current design of the movement in your watch has a silent type of Rotor bearing.
Some newer Rolex movement designs have a noisy type of Rotor bearing.

[PhilipJI]

Originally Posted by Dirt

The current design of the movement in your watch has a silent type of Rotor bearing.
Some newer Rolex movement designs have a noisy type of Rotor bearing.

Thanks for the info.

[Devildog]

Originally Posted by PhilipJI

Thanks for the info.

Also, don’t use your phones internal clock. They can change depending in which cell they pic up the signal from.

Use something like time.is

If you’re relatively active ho shouldn’t need to wind it manually. Just wear it normally and check it’s time at the same time every day for a week or so of normal use and see how it performs

[SearChart]

Originally Posted by Dirt

The current design of the movement in your watch has a silent type of Rotor bearing.
Some newer Rolex movement designs have a noisy type of Rotor bearing.

Yep.
31×× has the good old rotor axle
32×× has a ball bearing

Pictures: my own OP34 (yes I opened it) with 3130 and a new DateJust 41 with 3235

[PhilipJI]

Originally Posted by Devildog

Also, don’t use your phones internal clock. They can change depending in which cell they pic up the signal from.

Use something like time.is

If you’re relatively active ho shouldn’t need to wind it manually. Just wear it normally and check it’s time at the same time every day for a week or so of normal use and see how it performs

I know my iphone hasn't changed as it reads exactly the same time as my ipad that just stays at home.

I'll not wind it any more and wait and see what happens, will check it again this evening, to see what gain there is.

[PhilipJI]

Originally Posted by SearChart

Yep.
31×× has the good old rotor axle
32×× has a ball bearing

Pictures: my own OP34 (yes I opened it) with 3130 and a new DateJust 41 with 3235

Opening it is something I'd never dare do.

[Andad]

Originally Posted by PhilipJI

It was set against the stopwatch on my Iphone. So I could see how accurate it is.

On Wednesday evening when the second hand was at 12, I started the stopwatch. Thursday evening 24 hours later I could see it had gained one second, Friday evening another second, but tonight it had gone to a total of 6 seconds, so in the last 24 hours gained four seconds. I know from previous watches that they can gain if not wound enough.

Philip,

The stopwatch on your iPhone is not good enough to check your timing.

Log on to a time server and set your watch.

Wear it in your normal pattern for a few weeks and check it again with the server.

This will give you a more accurate daily average.

[PhilipJI]

Originally Posted by directioneng

Philip,

The stopwatch on your iPhone is not good enough to check your timing.

Log on to a time server and set your watch.

Wear it in your normal pattern for a few weeks and check it again with the server.

This will give you a more accurate daily average.

I'm now going to check it at time.is as recommended to me in a previous reply.

[SearChart]

Originally Posted by PhilipJI

Opening it is something I'd never dare do.

I'm an RSC watchmaker I opened it to apply some extra lubricant on the rotor axle and the reversers.

[PhilipJI]

Originally Posted by SearChart

I'm an RSC watchmaker I opened it to apply some extra lubricant on the rotor axle and the reversers.

That's the difference, you know what you're doing.

[PhilipJI]

Update. Just checked it as it's 24 hours later. Gained about half a second, since the wind yesterday.

[fskywalker]

Watch is doing just fine; stop worring and just enjoy your watch!


Sent from my iPhone using Tapatalk Pro

[Psijason]

Originally Posted by PhilipJI

Update. Just checked it as it's 24 hours later. Gained about half a second, since the wind yesterday.

That's GREAT timing!!! Nothing to worry about!!

[jpcwon]

I think you're fine truthfully. Sometimes watches speed up a lot when the mainspring winds down. This is due to the fact that not enough torque is being applied to the gear train from the mainspring, and this causes the balance wheel to oscillate faster than it normally. A lot of my mech. watches keep perfect time, but when the power reserve gets near the end they speed up like crazy. Not sure if that's happening here, but something to keep an eye out for. Even +4 a day is still within COSC, but I do agree that your OP should be able to do better than that. My Datejust 41 runs at +1 sec/week which kind of freaks me out a bit haha

[DantonIzzo]

Originally Posted by fskywalker

Watch is doing just fine; stop worring and just enjoy your watch!


Sent from my iPhone using Tapatalk Pro

This. Let the watch settle and just enjoy it.