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Posted

I bought a couple years ago this watch as a original one and I guess it is not. Trouble started when trying to set time at some point by turning the stem it feels like if something inside whas jumping and then easy again...deceided to open it up and found a broken teeth as seen on picture...Does anybody know where or how I may get a new one ?..Please.

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Posted

There are plenty of Ricohs for sale by indian sellers on e-bay. Maybe a crap one could be a donor. The hour wheel should be identical. But who knows, there are many different Ricoh movements. I would give it a try.

Posted
Unfortunately that model is probably the most faked of the Ricoh range [emoji22]
Good luck

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Hahahaha....I searched parts for the movement for this watch yesterday and yes you are correct , tons of fakes and tons of tips to look out before buy one...
I bought it 3 yrs ago from a gay from UK...but I will keep it , it is a good fake looking watch haha ...
I already bought a movement , this time I made sure I buy the right fake one .
Thank you very much
Moises

thank you much



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Posted

Hello again...Donor movement arrived and everything went ok...well some safety locks and little screws deceided to go flying but I found them...just one question...Why is it that the day seems not to be alligned with the date ?...It's been like this for a while ...Can I fix it ?...IMG_2583.thumb.JPG.7be64fc123bfcb0a93920
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Pictures are of the donor...


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  • 4 years later...
Posted

A week ago, I was introduced the exact same watch and I almost purchased (dirt cheap compared to ebay ones). What stopped me was the date wheel not aligned properly. The seller told me that "a gear" was taken from a donor movement, not a big issue bla bla, so I gave up on it. I think I was lucky not involved cause I'm kinda obsessed and I'd spend more than watch itself to fix it. Phew...

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    • Hello and welcome to the fo4um. Enjoy
    • Welcome to the forum, enjoy.
    • You're asking a pretty broad question and you didn't specify the machine but yes it's simple especially if you have the right machine. The question has problems but I'll take it as it is. Is it really that simple yes especially if you have the right machine. So in the video below he's making a screw and yes it really is that simple but pay attention to the machine it is not simple at all probably wasn't cheap but it is small it will probably fit in your garage. Unfortunately wouldn't fit in my garage as it's far too cluttered up with things. In the video he talks about making a screw and pay attention to the machine. The machine has lots and lots and lots of cutters and lots of things to do lots of machining all-in-one machine conceivably one step after another all programmable. If you look at his channel lots of CNC's stuff and there are several other videos related to this machine. He goes to the factory where they talk about it and show all the other machines they make in Switzerland.  I did look up the specifications the machine I don't recall the price it's not going to cut wheels I think it has a maximum diameter around 11 mm basically it's really good for making small diameter watch parts. Then in one of the other videos he goes to a factory that used to make parts with waterpowered machinery been in business for 100 years and everything they now make is made with CNC machines including this one. What was interesting with the factory photo was that when they make some parts they can put them on a optical comparator comparator compares with whatever the reference is and the machine can be programmed to adjust its cutting to make sure everything is actually being made to specifications. Oh and then somewhere in all of this there was at least one picture of a balance staff can't have a CNC Swiss machine without making balance staffs.   It would be really nice if we had pictures of the machine. Then yes if you look at the page for wheel cutting you can enter parameters and it will generate a G code but he left out things? Notice he has a picture of a complete wheel but the G code isn't making a complete wheel it's only cutting the gear teeth I don't see whereas the program for crossing out the spokes? Typically when you see people cutting gears once the teeth are cut most the time the spokes are cut by hand. Occasionally someone will mill them out but typically not with the program which seems strange if you have CNC capability for instance one of my friends fill it used to design assembly line equipment or things to make things. So his hobby was to continue to make tools to make things like clocks. Very interesting and clever clocks but his true fund was making the machines to make the clocks. Then machine is not controlled by G code like we would typically find today as the stepping motor controller he has was made a long time ago and the individual controllers used a textbased program. So the company had a editor you could write a program to cause each the stepping motors to do something. So basically once you figure out how to cut a gear he would just change the parameters for different size gears so here's an example of a gear as you can see we have the teeth and the spokes. Then we have a picture the machine which sucks because it would've been so much nicer if I could've taken a picture when it was cutting a gears so we can see things better. Then yes there is a worm gear stepping motor indexing this is a mini lathe and the indexing is at the end of the lathe head hiding. The basic operation of this machine would be brass sheet not cut to a specific diameter size not even round mounted on the machine. Then it turns and a milling cutter will cut the diameter. Then the gear would be cut with a gear cutter. The same mill cutter for the diameter although conceivably change the size I don't know but basically the same milling for cutting the outer diameter would be used to cut the spokes. I really can't remember how he did the center hole but whatever it was was very precise.          
    • Yeah I know the site and the creator of it.  the two video clips are good examples of the quicker method and a full tear down.  the quick method will work in many cases. But not always and not for all the different movements.  I strongly suggest to not bend the four tabs as was done in the first clip.  Instead there are three tabs that insert into the top plate, Much saver way as to not break a tab.
    • I found a motor that is 3/4 hp and another that is 1.2hp. They come with speed controller. So I don’t think I would need a wiring diagram. But I sure appreciate you offering your help! Do you think 1.2 hp would be too much for a watchmaker’s lathe?
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