Trident gaining 10 to 12 seconds....

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Tomo1971
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Trident gaining 10 to 12 seconds....

Post by Tomo1971 » Sun Jun 23, 2019 10:00 am

For my first foray into 'proper' watches, I chose to purchase a C60 Trident Pro 600 in September last year. The watch is worn maybe 12 days out the month and on some months not at all - alternate with a smart watch, mood depending.

I have noticed that the watch will gain about 10 to 12 seconds overnight while been left unworn - is this such an acceptable variation - I have no issue resetting the time every few days so it doesn't wander into been minutes out but concerned that this will wear the mechanism if I am having to do it more often than intended.

Is this variation acceptable or possibly be due to an issue?

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Laird
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Re: Trident gaining 10 to 12 seconds....

Post by Laird » Sun Jun 23, 2019 10:42 am

Sellita Movement quoted in the C60 h/book with 'accuracy' tolerances of +/- 20 secs ...
Rolex Oyster BubbleBack | Most C70s Except DBR1 COSC/AM100 | C7 'BlueBird' | C7 IRR COSC | C7 Mk2 BRG LE | C7 Rapide Mk2 COSC | C4 Phoenix |C8 Pilots M1&2 | C60 316L Yellow |C8 UTC|C60 Trident GMT|C60 Trident Chrono Valjoux | C65 Classic Rose |

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Amor Vincit Omnia
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Re: Trident gaining 10 to 12 seconds....

Post by Amor Vincit Omnia » Sun Jun 23, 2019 10:50 am

It might be an idea to wear the watch for a longer period (several days to a couple of weeks) and observe how the timekeeping is then. Also, experiment with leaving the watch in different positions overnight (dial up, dial down, crown up, crown down) to see if there's any difference.
Steve
The half minute which we daily devote to the winding-up of our watches is an exertion of labour almost insensible; yet, by the aid of a few wheels, its effect is spread over the whole twenty-four hours.
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H0rati0
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Re: Trident gaining 10 to 12 seconds....

Post by H0rati0 » Sun Jun 23, 2019 5:13 pm

Amor Vincit Omnia wrote:
Sun Jun 23, 2019 10:50 am
It might be an idea to wear the watch for a longer period (several days to a couple of weeks) and observe how the timekeeping is then. Also, experiment with leaving the watch in different positions overnight (dial up, dial down, crown up, crown down) to see if there's any difference.
They do prefer to be worn I find, but 10s a day is acceptable for a Trident, though even non COSC can do much better.

Also, all things being equal, a watch will run a tad faster as it winds down so depending on whether yours runs fast or slow you have to factor state of wind into the equation. On the wrist (ie fully wound for an auto) it should run "slowest".
"There is no beginning to enlightenment and no end to training" - Dogen Zenji (1200-1253)

Jcalder68
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Re: Trident gaining 10 to 12 seconds....

Post by Jcalder68 » Sun Jun 23, 2019 6:50 pm

The Sellita movement is specified as to be accurate to +/-20sec a day, as mentioned above. Also, as mentioned above, they usually do way better than this.

Mine runs to a net of about +3sec whenever I wear it regularly. By “regularly” I mean for 14-16hr a day and that is for either a work day or a weekend. Thankfully, my movement and activity levels are pretty much the same for both.

When I don’t wear it I tend to keep it on my winder. I have this set to constant winding, but I have it plugged into a timer plug so it winds for an hour or so, rests for 20mins, winds again, rests again etc and then rests from 22:00 to 06:00 each day. This pretty much replicates my daily wearing habits.

You will also notice that it’s orientation during its nighttime rest is important. Mine loses roughly 3sec if I leave it crown up overnight (this partially off-sets its +6sec gain a day while wearing during an average day and is how I get a net +3sec gain) but gains about 8sec overnight if I leave it dial down. Other orientations have similar variations.

What is important though is that it loses/gains consistently. I would, like others, suggest you wear it consistently for a week or more and note it’s gains/losses each day and each night. If it always gains when you wear it and always loses a set amount when you let it rest in a particular orientation overnight than that is fine; it can be regulated easily if it worries you. However, if it gains one day while you wear it and loses another, or if it loses one night when left say crown up and gains the next, than that is a sign of something more sinister and time to invoke the 60/60 warranty.

Hope this helps,

C
CW Watches (To Date): Trident M3 40mm, C60 Pro 300, C60 Pro 600 Vintage, C65 GMT, C65 Diver Auto, C65 Diver Manual
Others (To Date): Sinn 104, Seiko SNA411, G-Shock

Tomo1971
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Re: Trident gaining 10 to 12 seconds....

Post by Tomo1971 » Sat Jul 06, 2019 10:04 pm

Thanks all, I have been monitoring it over longer periods and noted that it does seem to be better when placed crown up, rather than face up.

Think that my next watch will be a COSC one though for that better accuracy - although do like a couple of the CW range with the orange bezels, and although quartz, which would be OK, they are not ceramic bezels.

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Re: Trident gaining 10 to 12 seconds....

Post by Craig64 » Sat Jul 06, 2019 10:58 pm

Hi Tomo
The non COSC movements in the 4 CW Trident watches that I purchased during this last year, have proved to be well within the stated accuracy tolerances, and indeed in three out of four of my watches, within the COSC tolerances. That is probably down to pure good luck.

If you are thinking of COSC for your next automatic watch, I would suggest bearing in mind two key aspects:
1) The extra purchase price/premium to be paid for COSC... is it worth it?
2) The extra cost of servicing of the watch, with extra time and processing needed to test and certify the accuracy of the time keeping.

Having said that, of course a quartz movement will be the natural choice for accuracy alone, if moving away from the magic of mechanical movements.

Craig
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Craig

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Re: Trident gaining 10 to 12 seconds....

Post by nauf » Sun Jul 07, 2019 3:54 am

I can say it’s within tolerance (oppss!! Sounds familiar). But you need to observe the time keeping. If it’s going faster, like +2mins/day then you should think of demagnetised your watch. All CW watches are not equipped with the anti-magnetic feature hence putting them together with any smart devices for quite a long period of time, say a night, might magnetise your watch.

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Re: Trident gaining 10 to 12 seconds....

Post by ScofieldReturns » Mon Jul 08, 2019 6:29 am

I feel like a lot of people didn't read the post and only read the topic title. He says it gains 10-12 seconds OVERNIGHT. Meaning it could very well gain over 20 seconds a day

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richtel
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Re: Trident gaining 10 to 12 seconds....

Post by richtel » Mon Jul 08, 2019 7:55 am

ScofieldReturns wrote:
Mon Jul 08, 2019 6:29 am
I feel like a lot of people didn't read the post and only read the topic title. He says it gains 10-12 seconds OVERNIGHT. Meaning it could very well gain over 20 seconds a day
Actually, when the OP said "the watch will gain about 10 to 12 seconds overnight while been left unworn", I took that to mean that the watch will gain about 10 to 12 seconds overnight while been left unworn.

He has specifically said that his concerns are about overnight when it is not being worn, suggesting that he is less concerned about when the watch is in use so presumably has timed it over daylight hours when worn and all's good in that department.

Tomo1971
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Re: Trident gaining 10 to 12 seconds....

Post by Tomo1971 » Mon Jul 08, 2019 11:24 pm

Sorry, to clarify, I had noticed that the watch does mainly gain overnight, not so much if crown up but especially so when face up.

When worn, it is a mix of gaining and losing time but generally around 5 to 10 seconds - need to monitor it more closely, not been wearing it all day this last few days as been working from home.

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Re: Trident gaining 10 to 12 seconds....

Post by Craig64 » Sat Jul 27, 2019 7:14 pm

Hi Tomo
Out of interest did you get chance to monitor the time keeping more closely?
If so, have you ended up feeling happy with its accuracy?
Regards
Craig

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