ROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEXROLEX
18 May 2020, 12:33 PM | #1 |
"TRF" Member
Join Date: Aug 2009
Location: richmond, va
Posts: 541
|
How long before you guys consider a Seiko
broken in? ie, for starting to watch the time accuracy in terms of seonds per day
My new Sumo, with a 6R15, has been running for 3 or 4 days now at 10 seconds + per day, but i don't want to regulate it and find myself chasing a constantly shifting target. |
18 May 2020, 08:28 PM | #2 |
2024 ROLEX DATEJUST41 Pledge Member
Join Date: Nov 2010
Location: North Carolina
Watch: Rolex/Others
Posts: 44,749
|
That is pretty good timing but not COSC, of course. I would set the watch and wear for five or six days without checking the timing and resetting it. Depending on when and how you are wearing and resetting the watch you may not be getting a true reading on the time. At the end of that time see where you are. Might be better than what you are getting now.
|
18 May 2020, 09:45 PM | #3 |
2024 ROLEX DATEJUST41 Pledge Member
Join Date: Dec 2010
Real Name: PaulG
Location: Georgia
Posts: 40,725
|
As for the movement reaching its peak performance, I’d give it a few months before checking it for a potential regulation.
That should give the staff time to settle as well as the going train to mesh consistently without undue friction. Then restart your observations daily and aggregate a moth of data without resetting it. That is your new average accuracy. Don’t just do a day here and a day there. Sent from my iPhone using Tapatalk Pro
__________________
Does anyone really know what time it is? |
18 May 2020, 09:52 PM | #4 | |
2024 ROLEX DATEJUST41 Pledge Member
Join Date: Dec 2010
Real Name: PaulG
Location: Georgia
Posts: 40,725
|
Quote:
I agree it’s not COSC - but Seiko only claims an accuracy rating of -15/+25 seconds per day for the base movement. Also agree long term observation without resetting is best method. Sent from my iPhone using Tapatalk Pro
__________________
Does anyone really know what time it is? |
|
18 May 2020, 11:01 PM | #5 |
"TRF" Member
Join Date: Aug 2009
Location: richmond, va
Posts: 541
|
Thanks - i was guessing 4-6 weeks but i'll let it go a couple months.
I misspoke earlier, it's now at 12 seconds over 4.5 days, which isn't bad, but what's probably representative of the fact it's still breaking in, the 10 seconds + showed up in the first day or so of operating. |
19 May 2020, 10:47 AM | #6 |
"TRF" Member
Join Date: Feb 2010
Location: Colorado Springs
Watch: Seiko's
Posts: 2,563
|
I honestly don't care until I notice the time is minutes off a day.
|
25 May 2020, 12:57 PM | #7 |
"TRF" Member
Join Date: Nov 2013
Location: UK/PH/USA/JP
Posts: 47
|
Doesn't really bother me at all as long as it's within the stated specs.
I have too many Seikos than my fingers and other watch brands that I barely notice the time variance since they only get used for one day each |
25 May 2020, 02:58 PM | #8 |
"TRF" Member
Join Date: Aug 2009
Location: richmond, va
Posts: 541
|
At the 17 day mark, my 2017 SUMO (new) showed just under 2 spd averaged over the 17 day window.
I reset it the other day, and 1.5 days later it's less than 1 to 1.5 seconds fast. I was about to pull the trigger on a SLA025 with the 8L55 movement but held back - worried it wouldn't show me the accuracy this SUMO is, and i'd be pissed. Think i'm going to refocus my interest on a SLA033 for a couple of reasons 1) case is a lot shorter than the 15.7mm height of the SLA025, so wearing comfort will be enhanced and 2) the caseback is removeable on the SLA033 so if i need to regulate the 8L35, it'll be a simpler chore. But i've definitely fallen into the Seiko rabbit hole - just pulled the trigger on a 2019 Green Sumo with the 6R35 mvmt - curious to see what different the shorter case height means, and the looks of the sapphire crystal |
25 May 2020, 03:26 PM | #9 |
"TRF" Member
Join Date: Jun 2013
Real Name: Dave
Location: NYC
Posts: 7,180
|
|
25 May 2020, 05:57 PM | #10 |
"TRF" Member
Join Date: Dec 2016
Location: Marikina
Posts: 2,561
|
|
26 May 2020, 02:48 AM | #11 |
"TRF" Member
Join Date: Aug 2009
Location: richmond, va
Posts: 541
|
IF knowing how accurate your timepiece is doesn't interest you, why not just wear a sundial?
|
27 May 2020, 05:13 AM | #12 |
"TRF" Member
Join Date: Feb 2010
Location: Colorado Springs
Watch: Seiko's
Posts: 2,563
|
|
27 May 2020, 05:18 AM | #13 |
"TRF" Member
Join Date: May 2012
Real Name: Rob
Location: Virginia
Watch: Sub/Polar/OP/BB
Posts: 4,510
|
My 009 is shockingly accurate and has an aligned chapter ring. I’m not usually that lucky.
Sent from my iPhone using Tapatalk |
27 May 2020, 11:49 AM | #14 |
2024 ROLEX DATEJUST41 X2 Pledge Member
Join Date: Nov 2009
Real Name: Ronnie
Location: Southeastern USA
Watch: Omega Seamaster PO
Posts: 3,853
|
If I need precision, I would opt for quartz. But in my opinion, a quartz watch doesn't have a soul like a mechanical watch. But I do have some Swiss timepieces that achieve about minus 1 second a day, which is phenomenal for a mechanical watch.
__________________
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|
*Banners
Of The Month*
This space is provided to horological resources.