Project Restoration/Build - 1968 Seiko 5126-8100 70m Sports - Page 2 - Seiko & Citizen Watch Forum – Japanese Watch Reviews, Discussion & Trading
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Old 04-25-2019, 01:54 AM   #26 (permalink)
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[QUOTE=zeke441;2759793]We've been through this before with you, do what you want with your watches, but don't pass along bad advice.




It's GOOD advice


Just because you can't deny it doesn't make it bad advice.
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Old 04-25-2019, 02:53 AM   #27 (permalink)
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Hey Paul, you are beginning to PISS a lot of folks off. Me for one.
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Old 04-25-2019, 03:00 PM   #28 (permalink)
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Quote:
Originally Posted by nzwatchdoctor View Post
I use a folded handkerchief (clean-ish)
Wouldn't that be good enough?

Ahh, now i understand why you have delusions of being a watchmaker.
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Old 04-25-2019, 05:49 PM   #29 (permalink)
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Great job.

May I ask, is the cushion a Cousins Value. I must get another cos my cheap ebay Chinese one is so uneven.
Don - I am trying to remember where I purchased that cushion. I believe I purchased it from Otto Frei. Not sure who the manufacturer is but I believe it is one from Horotec.
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Old 04-25-2019, 09:12 PM   #30 (permalink)
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Really nice work on this. The steel shine looks amazing!
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Old 04-30-2019, 09:25 AM   #31 (permalink)
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Finished up the movement side last night. Getting some decent numbers with amplitudes touching 270 and mid 260s. Should be able to wrap this one up in the next few days.
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Old 04-30-2019, 11:53 AM   #32 (permalink)
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Looking good!
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Old 04-30-2019, 12:15 PM   #33 (permalink)
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The 5126 is not an easy movement to work with. I've seen it frustrate two experienced wachmakers.

One thing that annoys me about the 5126 is the seconds hand. Even after service the seconds hand drifts backwards when setting the time in reverse. The cannon pinion is the most obvious explanation, but two different wachmakers have told me that it is not.

Any ideas?
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SEIKO REVIEWS:
6119-8120: Seiko’s 1st 70m “Sports” Diver?, 5126-8090 "The Kamen Rider", 5126-6030 “The Double Hurricane!”, 6138 UFO Chronograph, Seiko’s Rally Sports Divers, 6119-6050 “The Regatta Watch”, Poor Man's 62MAS: 7005-8050, “The Gene Kranz” 6119-8460, 6106-6430 UFO Sports Diver, Seiko’s New Rally Divers, 6106-7107 “Aztec Red” , The 7019 JDM Sports Diver Family, 6619-8230 “Simple Beauty”, Sporty Seikos of the Late 60s and early 70s, 7006-8030: Last of the 70m Sports Divers

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Old 04-30-2019, 11:05 PM   #34 (permalink)
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Quote:
Originally Posted by Seiko Hoarder View Post
The 5126 is not an easy movement to work with. I've seen it frustrate two experienced wachmakers.

One thing that annoys me about the 5126 is the seconds hand. Even after service the seconds hand drifts backwards when setting the time in reverse. The cannon pinion is the most obvious explanation, but two different wachmakers have told me that it is not.

Any ideas?
I noticed the second hand tracking backward when I first receive the watch and set the time. This occurred with very little tension in the mainspring. As soon as I put additional tension on the mainspring by winding at the upper train bridge, this phenomenon stopped.
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Old 04-30-2019, 11:23 PM   #35 (permalink)
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So at the moment I am feeling a bit frustrated with this service and rebuild. I get the movement side together and throw it on the time grapher and get some good numbers. As soon as I assemble the calendar side and get everything working and put the dial and hands on and case the watch, my numbers don't look so good. It is almost as though something is binding up the movement. The time grapher has a hard time getting a good reading like the signal is weak. I was wondering if my time grapher was broken, but I threw my Omega Speedmaster on it and get a good strong reading. Very frustrating. I basically pulled the movement side apart twice today and re-assembled. Same result. I need to take a break and come back to it tomorrow. May need to start over and re-clean the train of gears and re-examine my oiling and the balance assembly diashock jewels. I was pretty meticulous with those. Weird thing is running the movement side by itself looks great.
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Old 05-01-2019, 01:46 AM   #36 (permalink)
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John, what are the numbers like before you case the fully assembled movement.

Is the movement very smooth when turning with the crown, outside and inside the case.

Does the stem locate with the movement easily outside and inside the case.

Not that it will be much help but a pic of mine cased (pre service) in the event you spot anything untoward.

DSCN0702.JPG
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Old 05-01-2019, 08:23 AM   #37 (permalink)
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Good News! Amazing what a good night sleep will do for you. I let the watch set and run in last night for about 7 hours. This morning the numbers look very good coming off a 7 hour run with no winding. Amplitude 250 with 0.0 - 0.1 BE and Rate +1 - +5 sec/d dial up. One thing I have to learn is to be patient right off a rebuild. Not all movements are going to give great numbers right out of the gate. Parts and lubrication need time to take a set and run in on some movements. I will continue to monitor and post a wrist shot on bracelet later this evening.
Attached Images
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Last edited by Vette Enthusiast; 05-01-2019 at 06:31 PM.
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Old 05-01-2019, 06:28 PM   #38 (permalink)
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Happy to say the watch is running excellent after timing in 4 positions this evening. I am concluding this project with a couple of wrist shots. The cal 5126 was a challenge but an overall amazing movement. Built like a tank. Very pleased with how this one turned out.
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File Type: jpg IMG_0172.jpg (219.4 KB, 6 views)
File Type: jpg IMG_0171.jpg (194.2 KB, 3 views)
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Old 05-02-2019, 11:56 AM   #39 (permalink)
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that is top quality work and hopefully a permanent member of your "herd". Job well done.

These are my favorite threads ....
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