Jump to content

My 7730 tale (without happy and so far) - Looking for operating lever

Max

By Max
in Watch Repairs Help & Advice

 Share

Recommended Posts

Max Member

Max

Posted
Posted

Hi,

After having many success stories on different mechanical and tuning fork watches and pocket watches, I started with chronographs and my the servicing of the pocket watch Heuer chrono went without issues.

Next I could get a Valjoux 7730 Vintage cheap watch and after managing to get it open I cleaned it and rebuild it. Oriented myself on the Video of the 7750 by Mark and some photos I took before. Before I disasseble it the chrono was not working because the flyback lever was out of positioning. 

So, managed to clean and oiled it properly. The watch was showing stable and good results with the chrono engaged or not. Here is a picture of it:

IMG_4586.thumb.jpg.4967eacdd4f41599d851ebd75a9ec622.jpg

So I started to add the levers and there my problem was facing. The hammer legs seemed to be locked up with the operating lever handles and as I didnt have any other 7733 i could not compare. It looked to me like the operating lever was to high or the hammer "legs" are to low. I bet somehow the hammer or the levers are bend. Long story short I tried everything but I guess at the end it even worse. 

Now I am desperate looking for the following parts:

Important must finds:

8140 Operating lever

8220 Hammer

Optional:

8335 Spring

I am happy to pay fair and shipping costs. Below are some photos of the operating lever, look weird. 

IMG_4598.thumb.jpg.9224923fb63c77a6601d4947508094f3.jpgIMG_4600.thumb.jpg.a7ad0ba1d92ebbb76e2acec195e1cf41.jpg

IMG_4605.thumb.jpg.fe5d9973f705a189bb0be55afdf72ff6.jpgIMG_4603.thumb.jpg.e099a794a4af826f7ea3baf1657a3465.jpg

In addition I would be great if someone could shoot me a video of a 7730 from the right side (where pushers are) on how the operating lever is aligned etc and i can see the functions.

Or even better if someone could shoot a video on how to place this part would be freaking cool.

The 7750 looks so much easier or at least similar to what I did experience on the pocket watch.

Thanks for you help

Max

IMG_4588.jpg

IMG_4601.jpg

RyMoeller Super WRT Addict

RyMoeller

Posted
Posted

Volume 28 of the Esembl-o-graf series for the Venus 188 may be helpful in reassembling this movement (the Valjoux 7733 is refined version of the 188).  I would also suggest reviewing the technical sheets for the 7733 which can be found here.

 Share
Go to topic listing

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • JohnR725
      A lathe with indexing that won't break the bank?

      By JohnR725 · Posted

      interesting video nice to see the machine what it can do now I wonder what it costs and I'm sure it's not in my budget. Plus the video brought up questions but the website below answers the questions? What was bothering me was the size of his machine 4 mm because I thought it was bigger than that? But then it occurred to me that maybe they had variations it looks like four, seven and 10. With the seven and 10 being the best because way more tool positions in way more rotating tools. Although I bet you all the rotating tools are probably separate cost https://www.tornos.com/en/content/swissnano   Then as we been talking about Sherline. Just so that everyone's aware of this they have another division their industrial division where you can buy bits and pieces. I have a link below that shows that just in case you don't want to have the entire machine you just need bits and pieces. https://www.sherline.com/product-category/industrial-products-division/   Let's see what we can do with the concept I explained up above and bits and pieces. For one thing you can make a really tiny gear very tiny like perhaps you're going to make a watch. Then another version the center part is not separate it is all machined from one piece. Then fills gear cutting machines have gone through multiple of evolutions. A lot of it based on what he wanted to make like he was going to make a watch unfortunately eyesight issues have prevented that. Another reason why you should start projects like this much sooner when your eyesight is really good or perhaps start on watches first and then move the clocks then local we have from the industrial division? Looks like two separate motors and heads. Then it's hard to see but this entire thing is built on top of a much larger milling machine as a larger milling machine gave a very solid platform to build everything.   Then like everything else that had multiple generations are versions the indexing went through of course variations like above is one version and the one below was the last version. Now the version below I mentioned that previously and somewhere in the beginning to discussion and somebody else had one in their picture. As it is a really nice precision indexing. Then I wasn't sure if I had a the watch photos here is his unfinished watch. No he wasn't going to make a simple watch like none of his clocks were simply either what would be the challenge and that.    
    • Titanium
      Lab Coats

      By Titanium · Posted

      Use a Portwest Howie lab coat. They are the biological type so they have tapped cuffs so you don't end up getting the loose cuffs of normal lab coats catching everything. 
    • Titanium
      Chinese tools debate

      By Titanium · Posted

      Some of the Chinese tools ae great and can be purchased at a fraction of the price of Swiss ones, some are complete garbage and some I'm convinced are coming out the same factory as the branded ones.
    • caseback
      Calendar work certina 25-651

      By caseback · Posted

      I found this string about this problem. I've not gone through it all, but I believe it also mentions making a spring. If not in this string, the info is online.
    • tonydagee
      Calendar work certina 25-651

      By tonydagee · Posted

      No, I now realise it’s broken😥 ive looked for one online, but v. Expensive! im going to service as is, in the hope that  one turns up. Thank  you.
×
×
  • Create New...