WatchProSite|Market|Digest
WatchProSite|Market|Digest

Horological Meandering

So, a watchfool and the the god of adjustment went to the restaurant :-)

 

He brought some of his nice collection of his (which of course he has done adjusting himself or he will in time)....  I would want any of what he has adjusted..... smile

Please read also the interview of this "god" here:
interviews.watchprosite.com

Sorry for the not-so-good pic quality as the room was so dark!


Grand Seiko the second - 5722B - his daily wear these days.
More accurate than those sold today for sure smile









NOS 4420 GS - he is about to start servicing and adjusting.



The 61GS VFA which he adjusted - he says that this is the best result he could bring to the vintage GS.  Thanks to the very good base design of the movement itself.  "More accurate than the normal quartz watch" according to him smile



The next to VFA is also very little known gem - the ONLY Chronometer of non-GS brand.  As I mentioned in my interview with him, this is what he did before he officially started to work on the accuracy of the modern GS mechanical watches in 98.  YG/WD version was sold as LE of 500 in 97 and this WG/BD was made for a particular watch retailer with LE of 30 or so.....  And there is COSC paper!  I am sure he re-adjusted it to the much higher standard - but he admitted he couldn't do it as good as for VFA.  VFA seems that good, even today's GS standard.








A bit boring back side - too much bridge covering almost everything.  SEIKO does this because they simply can.  Their parts precision is that high....




Very unique hair spring structure: a small weight glued to the hair spring to control the position difference.  More on this later (hopefully...).  Street watchmakers tend to take it away thinking it is just a dust and create a mess for this wonderful rare chronometer movement.... sigh....






Watches of the night....


Wonderful line-up by the adjustemnt proficient.  Fun time passes so quick.  Hope to meet again when he got a new "toy" to play with.

Thank you, Mr. Ohira!  Hope to see you again soon.

Best,
Ken


This message has been edited by KIH on 2013-03-11 18:56:50

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27 Comments view entire thread 

Weighted hairsprings...

 
By: Ophiuchus : March 11th, 2013-20:10
Would very much like to hear a conversation with Mr. Ohira on the principle of weighting a hairspring. I assume it is to function much like an overcoil in its intended effect- controling poising errors from the hairspring's expansion and contraction in a ... 

I am guessing the same thing about the weight on the hair spring...

 
By: KIH : March 11th, 2013-20:33
.. and will get back to you hopefully soon. As for the accuracy, the VFA is right now less than 1 second per day in any position as well as daily wearing usage. Ken

Very very impressive!

 
By: Ophiuchus : March 12th, 2013-14:50
I feel that is a feat well beyond the skills of most watchmakers in the world, in fact this is the first I have ever heard of such level of timing between 6 positions. I had no idea that level of timing was possible with a normal mechanical watch! Of cour... 

Actually...

 
By: KIH : March 12th, 2013-16:21
.... he is now the senior trainer at the training center for GS global customer service facilities and therefore he has to visit CS centers around the world to train the servicing watchmakers for GS.... :-) Also, I think that the design of the VFA movemen... 

The question I would like to ask . . .

 
By: Dr No : March 11th, 2013-22:59
. . . of Mr Ohira is how long a tuned movement will retain its timing before drifting off. Understandably, there isn't a hard and fast answer, but one wonders how long adjustments last on average before he has to take screwdrivers in hand again. Sorta lik... 

Very reasonable question.

 
By: KIH : March 12th, 2013-08:25
I am interested, too. My VFA has been doing great for several months already. He has done more than several for his own and I will ask him next time I meet him. But my guess is that is the matter of the parts life. If the main spring is dead, it would be ... 

Hahaha... I know, I know..

 
By: KIH : March 12th, 2013-08:28
.. but all current GS can be adjusted to that level - but it would need time. It's just that they cannot take such a long time for adjustment but have to ship as soon as the new watches accuracy get within the GS standard (6 positions, NOT 5 positions, mi... 

Fantastic Post..

 
By: SALMANPK : March 12th, 2013-05:38
I love to see these Vintage beauties and your Credor...I am in Deep Serious Love with it :-) Do you have more pics of the NOS 4420 GS? Thanks for Sharing :-) S

Thanks...

 
By: KIH : March 12th, 2013-08:29
... I will probably see it again once he finishes the adjustment and servicing on it. May take months, though :-) Ken

I have asked the photo...

 
By: KIH : March 12th, 2013-08:29
.. and hopefully I can show you here soon.... Ken

Thanks for the efforts Ken...

 
By: tick tock doctor : March 12th, 2013-09:56
I think an image would answer a lot of questions, at least for myself. Kind regards Anthony

Ah!...

 
By: KIH : March 12th, 2013-16:22
.. now the appearance has not changed, but the movement sharpness has dramatically gone up :-) Hope to see you again soon! Ken

Great read

 
By: takashi78 : March 12th, 2013-23:10
I am curious if there are other people in the world who comes close to him in terms of adjusting. You must show me your VFA when i visit you Ken.

Terrific! You know, I love all these watches

 
By: SteveG : March 12th, 2013-18:02
the Credor is really gorgeous! Don't know if this qualifies, but maybe there is another Seiko non-GS chronometer: ...  

Yes, it does!

 
By: KIH : March 12th, 2013-23:06
... my tongue slipped. Yes, including yours, there are several Chronometre models non-GS.... in vintage world. This one, I only mentioned as it is one of the modern non-GS.. :-) And no need to worry about being sued or complained by COSC, hehehe. Thanks, ... 

The Credo is beautiful...

 
By: elliot55 : March 12th, 2013-18:34
... it looks like a nice size, easy to read. But I also agree about the view of the movement. It would be nice to see under that plate! - Scott

Oh, yes....

 
By: KIH : March 12th, 2013-23:07
... this is a real hidden gem. Not known to many - who would imagine Chronometer from Cr brand? Interesting "experiment" indeed. Ken

Yes!

 
By: KIH : March 13th, 2013-23:49
Hi Aaron, Exactly my thought... Wish it were mine.... :-) Ken