Spring Drive – a technological phenomenon
Spring Drive – a technological phenomenon
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PJ S

Original Poster:

10,842 posts

258 months

Wednesday 25th September 2013
quotequote all
http://forum.tz-uk.com/showthread.php?272856-When-...


Just realised it's been just over a month since the watch arrived, and I should finally be able to wear it shortly once the links Seiko US have graciously provided FOC to Arizona Fine Time (who're forwarding them on).
During this period, the watch has been constantly kept wound and therefore only had the time set once (the first night), against the computer's clock, which is sync'd with Apple's time server in Europe.
As of now, the Seiko stands at ±0 seconds accuracy (in reality, it's probably less than 1/2 a second) as I switch my attention from the seconds hand to the seconds in the top right corner of the iMac's display.
At no point over the past month, when checking the time, have I noticed any gross deviation from ±0 seconds – there's been no speeding up or slowing down to create a mean average, it's been a consistent ±0 every time I've looked.

Of course, it'll be interesting to see if my body heat affects this supreme accuracy state – I'm hoping not, but we'll see, especially as I tend not to remove my watch overnight.
Love or loath the technology, you can't argue with the result – since the temperature of the rooms it is in have had a dramatic temperature shift during that timeframe in line with the recent weather of the same period.
I won't get all anal about keeping a daily log, but I suspect as it'll be on the wrist whilst using the computer, then there will be a cursory check most days – just out of sheer curiosity rather than geekery.

Whatever prejudices you may have about Grand Seikos, or Spring Drive being the worst of both quartz and mechanical combined, I recommend you put all that to one side and just embrace a Japanese "vorsprung durch technik" (advancement through technology).


Suu~ito· dorimu!

tertius

6,914 posts

261 months

Thursday 26th September 2013
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I have one from the same range:



I love it, one of my favourite watches, and although it can hardly be described as elegant the design just works.

PJ S

Original Poster:

10,842 posts

258 months

Thursday 26th September 2013
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Ooh.....an SNR009 – good call, sir!

richwig83

15,837 posts

169 months

Saturday 28th September 2013
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Isn't it a 100% fluid second hand movement?

tertius

6,914 posts

261 months

Saturday 28th September 2013
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richwig83 said:
Isn't it a 100% fluid second hand movement?
It doesn't tick if that is what you mean? It just moves smoothly and continuously. There is no mechanical escapement, my rather crude understanding is it uses an electro-magnet to brake the unwinding of the main spring.

PJ S

Original Poster:

10,842 posts

258 months

Saturday 28th September 2013
quotequote all

SVS

3,824 posts

302 months

Sunday 29th September 2013
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No prejudice here. I'd certainly have a Grand Seiko if I could afford one.

Nice one thumbup

richwig83

15,837 posts

169 months

Sunday 29th September 2013
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NeMiSiS said:
richwig83 said:
Isn't it a 100% fluid second hand movement?
Indeed, no BPH, no incremental jumps, just a smooth sweep - just like the electric clock in my Sons classroom.
Yeah I thought so... I looked at getting one a few years ago now, but couldnt get hold of one.

PJ S

Original Poster:

10,842 posts

258 months

Sunday 29th September 2013
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If you're still interested in one, speak to Appleby.ie in Dublin, they have a couple.

tickious

1,401 posts

205 months

Monday 30th September 2013
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£?

PJ S

Original Poster:

10,842 posts

258 months

Monday 30th September 2013
quotequote all
I asked if what I'd been told was the case – that they had stock of the same model I have.
They replied that they did, and prices were €3300-3900 – I suspect the higher price is the GMT version.
They said they would be happy to discuss options and negotiate the price.
It was suggested they were looking to shift these, and adding a Grand Seiko string to their bow.
They really could do with improving their website to reflect the level of luxury watches they carry.

Give them a call or email to see what price they'll go to.

PJ S

Original Poster:

10,842 posts

258 months

Tuesday 22nd October 2013
quotequote all
Well, nearly another month has elapsed since starting this thread – the links finally arrived (detour via Canada, according to the tracking system!) and have been fitted.
So now that I've been able to wear it for the best part of a week, how's the accuracy?
Still spot on – not seen any deviation, irrespective of power reserve level.

Of course, come next weekend's end of BST, it'll be reset – but for three and a half months, it's been rock steady at ±0.25-0.5 sec, which is more accurate than a very accurate thing, and certainly more than I would've ever expected.

PJ S

Original Poster:

10,842 posts

258 months

Friday 31st January 2014
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michael gould

5,698 posts

272 months

Saturday 1st February 2014
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Amazing movement .......would love to see one in the " flesh"

Vvroom

1,170 posts

221 months

Saturday 1st February 2014
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Is it just me or does that 2 part recessed dial remind anyone of the Rolex Oysterquartz and the rarer than a rare thing, the Rolex 1530 DJ?

Anyway, well done OP, looks lovely.

andy tims

5,606 posts

277 months

Saturday 1st February 2014
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Love mine



CardShark

4,264 posts

210 months

Saturday 1st February 2014
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May be another couple of weeks before I get my GS SD back, looking forward to its new refinished look though... and getting it on my wrist, I haven't even flippin' worn it yet frown

Here's a pic knicked off the 'net


Debaser

8,648 posts

292 months

Sunday 2nd February 2014
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Here's my old one...


glazbagun

15,380 posts

228 months

Sunday 2nd February 2014
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I really like these. It should be virtually impervious to positional and temperature errors compared to a purely mechanical wristwatch, as there's no balance or hairspring to be upset by poising, heat and magnetism. I think they're an amazing idea from a technology, if not strictly watchmaking, point of view. I expected the rate to be really good, but that really is brilliant.

Do you know what the service intervals are? Without a fast-running escapement, I'd imagine them to go a long time between services. Is it possible to buy a little stockpile of the quartz bits as futureproofing against obsolescence? If it is, you could have the longevity of a mechanical with the accuracy of a quartz watch

theotherJamie

544 posts

257 months

Monday 3rd February 2014
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"gapping wound on the dial" wink