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Servicing a Yuki 3135 (How & Why)

occb2

Rest Well. EOW 01/19/2024
Staff member
In Loving Memory
10/6/14
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I'll reach out to him. Thanks.
 

mech500

Mythical Poster
6/4/12
8,253
3,601
113
UK
Well im in talks with Phongs son on making a 16710 case. He wants me to send him my real 16710 and he will use that case as a mold. It's just he want a lot of money for the cases and I have to order 5 min and he wants 1/2 the cash now. Myself and another member are splitting the 5 cases. I just feel like I am giving him my real case and the 1/2 the money will most likely cover all his charges. So I feel like I am paying for something to be made that he will make a lot of money on. Now I have asked him to lower the price to under $1000 a case. Still waiting to hear back. I think that might be my calling. To do it myself. Just need the know how. He wants to charge $1450 a case. That is nuts.

Have a word with NY Metal works and C&W (both supporting vendors) - I read that they have access to laser scanning and CNC'ing to 1:1 copy your existing gen case.

Does Phong's $1450 quote include copying the bezel assembly and caseback?
 

Tickleshoes

Renowned Member
19/8/15
932
302
63
45th Parallel
Soooo... as I eluded to earlier in the post, I have been working on some things and while I'm not over the finish line yet, I think it's time to share my progress. New post incoming :)


EDIT: It's up!
 

unreformed66

Known Member
7/11/15
165
19
18
United States, Ohio
@unreformed66, have you worked on a Yuki? Prior to the hike in price. It was $340. I spent $300 to $500 in parts. I clean it myself. I have them running +/- 2 sec. Reliable calendar and winding. I have one that My friend converted to a 3185 and it's running amazingly. So much that I have a brand new 3185 with the antimagnetic spring and balance and I haven't swapped it over. I have a Rolex 16710 that is all real minus the movement which is that Yuki/Rolex 3185 hybrid. So yea I can defeantly disagree with you on the quality. Rolex 3135 is a better movement than a Yuki. Undoubletlly but a well serviced and modified Yuki will run as well and give you a lifetime of service if taken care of.

Also so I don't know if you know but Yuki is the $ man. He doesn't "make" the movements. I was the first one to tell him that the balance of a Rolex won't work. The only reason I knew was because my friend Mike replaced every part using a Yuki main plate and the Rolex balance would only work for 20 -30,seconds. I have the email Between Yuki and I talking about it and he said he didn't know and that I was the first one to tell him that. He knows he has a great product and that with the right watchmaker or hobbiest is just amazing.

Yes if if you take a Yuki that comes from the factory and throw it in a movement it will work. I've seen them working amazingly from the factory. But you look at them with a loop and they are dirty as hell. Dry as hell. I've seen reversing wheels already wearing. I've seen hand pinions bent. I had a person here send me his brand new Yuki and wanted me to just throw it in a v6s. I alway check the calander work prior to installing a new date wheel because you WILL destroy it. Well the brand new Yuki calander wheel was slipping. I have the gear at home and you can see the teeth are destroyed. That is from the factory. I ended up feeling so bad for the guy I brought everything from him because he didn't want to or didn't have the money to put the gen Rolex parts.

Point being. If you are a hobbiest who wants a good sub that will pass with 99.9% of people go with a TC and a gen 2824. That watch will last you a long time. You want to be a hobbiest like me. Buy that TC and make it yours. Wether it be with a watchmaker or yourself. Upgrade the crap out of it. Slowly, quickly, what ever speed you want. But make it your watch. The Yuki is a upgrade IMO to the ETA. Works identically to a 3135. If I had it in my hands and adjusted the time I would think its a 3135.

Again in this whole thing is for a modern Rolex. If your looking to make a 16800 or prior then a ETA would be the way to go. Everything adjust the same from a 3035 and a 2824. I hope this helps. And sorry for typos. I'm on a iPad.

Cant wait to to be home with my laptop. Lol.

More power to you if that's what you like. No, I haven't worked on one of Yuki's movements but you're describing the same problems I've seen in the other 3135 clone movements that I have worked on. Dirty, dry, poor quality control and etc. All the ones I've handled had "issues" in both the quality of the manufacturing process AND the obvious crap conditions that they're assembled in. You say you've got both Yuki parts and genuine Rolex parts. Compare them side by side and they look like they came from different planets instead of different factories. Yes, I get that you can use your rep 3135 with genuine cases, dials, and etc. That to me is the only selling point. If I'm going to have $1000 in a movement to make it reliable I'm just going to go ahead and pony up the rest of the cash for a genuine movement. It's all in what you want I suppose. Like I said before it's your money and you can spend it however you want. And hey, wouldn't it be a boring world if we all wanted exactly the same thing?
 

occb2

Rest Well. EOW 01/19/2024
Staff member
In Loving Memory
10/6/14
14,018
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More power to you if that's what you like. No, I haven't worked on one of Yuki's movements but you're describing the same problems I've seen in the other 3135 clone movements that I have worked on. Dirty, dry, poor quality control and etc. All the ones I've handled had "issues" in both the quality of the manufacturing process AND the obvious crap conditions that they're assembled in. You say you've got both Yuki parts and genuine Rolex parts. Compare them side by side and they look like they came from different planets instead of different factories. Yes, I get that you can use your rep 3135 with genuine cases, dials, and etc. That to me is the only selling point. If I'm going to have $1000 in a movement to make it reliable I'm just going to go ahead and pony up the rest of the cash for a genuine movement. It's all in what you want I suppose. Like I said before it's your money and you can spend it however you want. And hey, wouldn't it be a boring world if we all wanted exactly the same thing?


I believe your not getting the point. A yuki cost me $340, or did. I would spend around $300 to get it to run well. That is $640. Yes I can put $300 more in parts and make it $1000. I can put $3000 in parts and make it not cost effective. So I don't get it.

Also. I have put rolex parts next to yuki parts. About 60% are great maybe even higher than 60%. The crap are the pinions and a lot of the gears and wheels.

Also what rep 3135 have you worked on? I have worked on a bunch and the Yuki is the only one that will take all rolex parts 1 on 1. I have a A3135 which is a joke. Its a bad asian rep of a 2836 made to look nothing like a 3135 but it has writing on it. Not one part of a rolex fits that. I have seen the first SA3135 and same. No parts fit from Rolex. The new SA3135. I have 2 here. Same thing. No ROLEX parts fit. So I don't believe there were any JUST LIKE yuki's out there.

Final break down on a yuki.
it was $340, $100 on a date disk, about $200 to 250 in two small reversing wheels, hand pinions only if Yuki ones are bent. Most of the money is the calendar changing. They used a jewel and it is so hard that it can skip a day when flipping over and also if you change the date between 10 PM and 2 AM you can destroy your date wheel or jam your main gear for the calendar function and have to change all that.

EVERY watch I had a yuki in I have a real rolex in now. I am not saying that they are better than a real rolex 3135. I still would love to see a $1000 dollar 3135. I buy them all the time. I buy them between $1400 and $1900. Now service them and you are at $2300. So now I do the math a service yuki with ALL the problems handled is about $1100 maybe $1200. Its a $1000 difference for a real 3135. Now put that you can just do the basics to the yuki and it will work fine as long as you don't mess with the day during those hours your looking at $1500 difference. So To each their own opinion. You can put an asian 2824 clone in a TC holder for all I care. The watch will tic and as long as you are happy with it god bless you. That is the best thing about this hobby.
 

occb2

Rest Well. EOW 01/19/2024
Staff member
In Loving Memory
10/6/14
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Also we can go back and forth with who has done what or just show who has a bigger junk. What is good for one person is not always good for the other. I know people who wont do a build that cost $200 dollars. They are happy with it. I have no problems with that. They are doing what THEY want.

What I DO know is that the Yuki has changed this hobby. I believe he might be getting greedy and I sent him a long letter stating that. If you go to his site you will see he knows me well. A lot of my watches are up there and we communicate through email. There is NO other movement that fits all the rolex movement parts and will work amazingly. Hands fit, dial fits, date wheel fits, It winds in the proper direction. It adjust just like a real 3135. Again this is a replica site. Yuki is the only TRUE replica of a rolex 3135. Put that into a replica rolex spec case with real parts and you have one breath taking, life long, replica.

LONG LIVE YUKI!!!!! LMAO. LONG LIVE RWI. This is a great hobby.
 

papajetta

Getting To Know The Place
18/3/07
47
1
0
Resurrecting this thread as i am about to attempt servicing my newly obtained sh3135. I went through the entire thread in search of some background info.... no one mentioned if the yuki requires some of the exotic rolex oils and grease used on the gen 3135.

9010 , no.problem
Pml 163? OK to Substitute?
Rolex MR1, Oylt. . Seems like no problem
K22
Lubrifar???
G25


Are yuki being serviced with this list ? Or are substitutes being used? Thank you for the info
 

occb2

Rest Well. EOW 01/19/2024
Staff member
In Loving Memory
10/6/14
14,018
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I have always used the Rolex oils because my buddy gave them to me. But I would say use what you feel.


Sent from my iPhone using Tapatalk
 

occb2

Rest Well. EOW 01/19/2024
Staff member
In Loving Memory
10/6/14
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I can tell you that there have been a lot of issues with balances on last few batches of yuki's he sold.


Sent from my iPhone using Tapatalk
 

occb2

Rest Well. EOW 01/19/2024
Staff member
In Loving Memory
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Running perfect till installed. A buddy is going through this now. Sent it to 3 different people. Replaces almost every part. Dies when installed in a case. Crazy.


Sent from my iPhone using Tapatalk
 

papajetta

Getting To Know The Place
18/3/07
47
1
0
More than likely tolerance on 1 plate being off will compress when locked in?... I'm tempted in using substitute oils on this as some are very hard to get. Any suggestions or experiences with substitute oils
 

Tickleshoes

Renowned Member
19/8/15
932
302
63
45th Parallel
Here is what I used to use before I got real Rolex oils (the proprietary ones):

-Epilame
-9010 - escape wheel, autowind
-HP1000 - train wheels, minute pinion
-9415 - pallet stones
-9501 - keyless, winding system
-8200 - mainspring
-8217 - barrel wall.
 

Hinclimincli

I'm Pretty Popular
Certified
18/12/09
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. If you can see it move, you've moved it WAY too much. If you can feel it move you've still moved it too much :)

This!I learned the hard way, with my SA 3135. Took me ages but I finally got my DJ at +5s/d. Just push that lever, just press it, but do not try to "move" it, that's the trick.

My only concern now is that beat error is all over the place (around 2.1). But every time I touch that lever, I lose/win seconds so I think I'll leave it there until I get it serviced.
 

papajetta

Getting To Know The Place
18/3/07
47
1
0
Here is what I used to use before I got real Rolex oils (the proprietary ones):

-Epilame
-9010 - escape wheel, autowind
-HP100 - train wheels, minute pinion
-9415 - pallet stones
-9501 - keyless, winding system
-8200 - mainspring
-8217 - barrel wall.

Thank you