Jump to content

Recommended Posts

Posted

Hello all just want to make a quick introduction. My name is David and I am an avid watch collector mainly divers and chronographs from the late 50's to mid 80's being my preferred vintage. I have always tinkered with all things mechanical and after rebuilding a 1982 Porsche 911 engine with nothing more than a book and some online help I figured I can tackle most any job. I recently put together a watch from off the shelf parts using a cheapie ETA 2824-2 clone movement which worked fine until one day the stem came loose when changing the date. I decided that as it was a cobbled together project there was no way I was taking it to my watchmaker but rather would tackle the repair myself. I disassembled the watch and found some information which pointed toward the keyless works bring the problem. Sure enough after taking off the dial and date wheel parts it was indeed the keyless works. I stripped this out and on examine the parts could see how poorly made they were so I ordered NOS parts. I got the new parts fitted them back and voila problem solved. I have since repaired another old Fortis five watch I have had for years which had a similar problem although this just requires resetting the works. I have now taken a huge leap and have stripped down a valjoux 7730 movement out of an old wakmann I have had for years which has never really worked properly. Only thing I have found broken at this stage is the mainspring and the flyback lever which I have ordered. I am however struggling to find much information or service advise on this movement. I know it is similar to the Venus 188 but is it that similar? Anyway if anyone can help I would appreciate it.

Posted

Welcome Davey many like minded enthusiasts here from tinkerers to pro repairers. Someone for sure will have advice regards Valjoux 7730 Mark has a some excellent vids which might be of use. 

Posted

Greetings and welcome!

 

Boy, talk about learning to swim in the deep end of the pool :)  Lots of help here if you get into trouble.

 

Cheers,

 

David S - who is not that brave

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • My profile photo is age 20, last century, but I still look exactly the same so I'm not sure it counts ¯\_(ツ)_/¯
    • I sure appreciate your comment! I will look into one of those or maybe something similar. I of course will check your video to have a better idea.  by the way, that’s a beautiful lathe! Mine is a little peersless, but I just bought a Boley & Leinen that is on its way. That’s the one I am looking a motor for. It comes with a motor, but I want to replace it for  one that has a speed controller.
    • Indeed. I would not attempt one. Here is my messy Sherline setup
    • Hello everyone my name is Tom and I and I am new to the forum and new to the hobby. I have always had an interest in mechanical watches and finally decided to pursue it. I’m going thru online trading and have purchased the basic tools to set up a work area. I’m really looking forward to learning and thank you in advance for all of your knowledge!
    • This conversation is becoming a very confusing. The etachron system is a very nice system for manufacturing watches. As you know it consists of two components the stud and the regulator pins. Beautiful thing of this system is you can open up your regulator pins center the hairspring and as you close the pins they will close equally on both sides providing you centered it in the first place. It's not like you're going to become closer to one side or the other as the definition of the regulator pins is a bit confusing it's not exactly a slot sort of. I'm thinking maybe a little eight reading will be helpful for you. Then the file name was changed by me at the US patent but the wording of Seiko may or may not actually be attached to it soared up? I just did that so I can find it in my files. Normally patents are in people's name if they work for a company the company name will be there you'll notice the person lives in Japan which is interesting as the name would imply that this is a Swiss product. Somewhere I think I have the patents for the stud and I believe that is Swiss like a lot of things their Japanese and Swiss and then the Japanese let the Swiss name stand as it seems you more popular in case as you read up on the patents of the regulator pins or pin will see and it should explain exactly how and why it works also why it's important to always close at an open in specific directions because the pins actually have a shaped to them it's very hard to see the shape as it's very tiny.   As a reminder with this system it's mass-produced. I wouldn't be at all surprised if they use cameras and computers to do all of the adjustments.  The meaning of this is that the majority of watches will function as there supposed to and do what they're supposed to do the system will allow us for some minor in tolerance and has more than likely as I said no human hand is ever touched those watches that's the way they left the factory and they work fine. US2007091729A1 seiko etachron.pdf
×
×
  • Create New...