A vintage Elgin 15/0, Gr 559. I took it down, cleaned and lubricated it and it is gaining 15 minutes/24 hours. I have looked at the HS, it appears to be perfect, clean, flat, not magnetized (de-magged the movement X 3 already), and in position between the regulator pins. Not hung on the center wheel. Correct mainspring, and balance is not knocking. I do not remember amplitude, but IIRC, it was above 22 which is O.K. by me with the movement. Please give me some ideas as to how to correct this. It doesn't seem like there are enough timing washers in the world to slow this down!
I'm really interested in finding out what main characteristics in a mechanical watch decide how much power reserve one can achieve. Can an existing watch be retro-fitted to enhance power reserve and is it recommended? I'm thinking does it impact on the other components in a watch?
one of my favorite watches is my IWC Flieger Chronograph (Ref 3777).
The only thing that annoyed me was, that it was almost 3s late every day. 15s or more in a week!
I know, this is complaining on the highest possible level. But still. If she would go 15s fast a week. Fine. But not late.
My Weishi Timegrapher 1900 showed it pretty clear. After quite some experience with movements I dared to open it! No way to take the movement out, just opening it. Wow, what a nice movement!
But regulating the balance proved to be a challenge:
There is a little screw (going from the left to the right) which is used for fine regulation. The only problem: the screw is obscured by the case. And the stud is extremely smooth moving. The first thing I did was bringing the balance out of center while pushing just a little bit too hard. I was totally relaxed, because it was easy to bring it back in the right position with the Timegrapher.
What is good about the 1900 model is that the two lines (tick and tack) are in different colors. When you push too hard the yellow line is above the green one (or vice versa) and you know, you went too far. The beat error itself does not change (e.g. turning negative). Very nice and helpful feature.
It took me quite a while to get everything in perfect condition. With dial down I had to regulate her 2s fast.
To make a long story short: in the morning she is spot on and in the evening she is 1s late (again!). But with crown down she is running 1s fast in 7h during the night. Spot on next morning!
BUT: Here is my question: The beat error is 0ms dial down but 3ms dial up. I have absolutely no explanation for that. I thought that the beat error should be the same no matter what position the watch is in. This was also the case before I regulated her.
I am looking forward to hear your explanation!
Thank you and Cheers
I have just posted a new vid on YouTube. This one takes last weeks video a bit further and shows the basic operation of a Timegrapher timing machine.
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does the hairspring always need to be shaped where it rests against the regulator pin? Or is it ok if the hairspring touches the boot side with the screw slot instead? Seems to me it wouldnt make a difference as long as it touches one side or the other
Well. It seems it can not be take out unless you have a jewelling machine. That's why I'm asking
something like that but it doesn't have anything screw to release it. It's the jewel of train of wheels，not balance
i recently broke my patek 5134 by winding a little too vigorously. heard a click sound and can no longer wind the watch. it has a 215 PS movement after dissasembly, i see that the "under" wheel that the crown wheel is attached to (located under the barrel bridge) has a couple of broken teeth. the wheel has 3 screw holes and a nub in the middle for the crown wheel to attach to. from my searches on the internet, it appears this part is #421, but i am not sure, wondering if anyone can confirm correct part number or has any ideas where to procure part. i will attach a picture showing the part, its the silver part under the highlighted bushing with 3 holes in it.