Jump to content

Recommended Posts

Posted

You might remember me literally destroying a Chinese movement on my Loreo Sub homage watch. I also got a Corgeut Seamaster 300 homage with a malfunctioning date complication, with the same movement as the Loreo.

So, I contacted Corgeut about the malfunctioning date, and they offered to send me a new movement. I asked for a Miyota 8205, and they agreed. So, great customer support from their part, quite frankly.

The movement arrived a few days ago, and I went and replaced it with the Miyota. This time I took all necessary precautions, I got a proper movement holder, new hand setting tools, and a 15x loupe. I also used the dot of rodico on the tip of the hand setter method to set the seconds hand, and it worked like a charm. Now I have a Seamaster 300 homage with a Miyota movement. Success #1.

Now, what can I do with the remaining movement? Other than a misaligned date wheel, is a perfectly working and very accurate movement, so I decided to put it on the Loreo. Sadly the dial had a broken hour marker (I applied so much force trying to fit the seconds hand, which was already broken, that the tool slipped and punched the marker away, and fell in the floor, nowhere to be found). So it looks weird, but I was able to put them movement back in, and setting the hands went also very smoothly. So, long story short, both watches are working and ticking very fine. Success #2.

The mods are not finalized, though, as the date window on the Loreo is still showing a crooked date for some days of the months, so I purchased a replacement sterile no-date dial with a nice vintage design, kind of a 1958 Rolex. It'll remove the cyclops with a torch and go no-date. It'll have the ghost date position on the crown, but I don't care as I'm looking for the vitage no-date look.

You might also notice that the date on the Corgeut is still a bitt off center, and I agree that it might not have been entirely the movement, but the dial itself. They did sent me a new dial and hands, but I decided to reuse the old one, so I might replace the dial and see if that fixes the date issue.

In case you are interested, here are some details on the mod: 

 

IMG_1627.jpeg

  • Like 4
  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • This is a method that Jon uses, and has posted a video of performing it somewhere .
    • Did you watch the whole video? Once Alex has set the stud, he first corrects the best error, then checks that the hairspring coils are breathing concentrically, then turns the stud to centre the hairspring between the open regulator pins.  He then checks that the regulator can traverse the terminal curve without disturbing the hairspring. A correction is needed, which he performs.  He then reinstalls the balance and re-centres the hairspring between the regulator pins, and verifies that the regulator traverses the terminal curve without disturbing the hairspring.  Finally, he demonstrates how to close the gap between pins.  He then recaps the whole process, fleshing out more detail. If you follow this process, you have correctly set up the regulator pins, and are ready to set the rate of the watch.  If you are interested in learning more about the effects of the regulator pin spacing on positional rates etc, you can read any literature regarding regulator pins. The etachron system makes adjusting beat, centering the hairspring between the regulator pins and adjusting the gap between the pins very convenient, but the same rules that apply to old style regulator pins apply to the etachron system.  This video explains the basics :    I hope that helps, Mark
    • Some photos of the angles you are talking about, and the changes you are seeing to coil spacing etc. would be really useful. Part of your problem could be that you are closing the pins too far and pinching the hairspring. Adjusting the pin separation should not affect amplitude. Nor should it change the coil separation.
    • Did you try it on a Rolex ref. 16600 specifically? Congrats on the nice condition of the movement in your watch. Even so, remember to check the rotor play or those marks around the main plate may start to build up.
    • Here is a method described in the watch repair book of Mark W. Wiles. Don‘t hammer, just tap very gently! Another option:  
×
×
  • Create New...