I am working on a vtg. Citizen cal.7520 automatic movement.
I have put the watch on the timegrapher
The graph looks OK but the beat error shows 9.9ms. I presumed that beat error should be around 1.0~2.0 given the shape of the graph.
Is the beat error actually bad or the timegrapher is wrong??
Padd here from the UK.
It all started with a desire to fix a Submariner replica I bought off a lucky lucky man in Pisa, Italy while on a European tour.
Next thing I know I'm investigating Submariner replicas and building my own, signed by me, using a Seagull ST2130 movement, adventure watch.
Now I'm hooked, I took inspiration from Marks videos, now I'm happily starting to work on parts of the movement, and have recovered one or two movements where the stem came out, but wouldn't stay back in. I have built a few watches for friends and relations, but now I need to be able to service them when they come back to me.
I also have a couple of movements that run really badly, so I will be practising on those over the winter weekends. Full repair/servicing kit IS my Christmas present.
I really want to get one of those ST2130's, serviced and tweaked by me, doing a -------------------------- on my timegrapher. not a -.'-.'''--,'.'.' (and worse) that they do at the moment.
I wont start to list my watch collection, but it runs from a Casio digital to a Rolex pocket watch with Seikos, Citizens, Omegas and home builds in the mix.
Must do Mark's course, but I'm afraid I may have already learned 60+% of it already.
First, the hairsping in the picture is unacceptably distorted, many topics on the subject of correcting an HS and the difficulty of the task - high. If you want to show how an HS looks like, remove cock, lay it down and shoot from above.
Then, fault finding consist of taking the entire mov't apart, clean it the best possible, inspect every part under magnification, pivots, jewel, gear teeth for damage. Put it back in the most basic form and test every function, end shake of every wheel etc. You can do that even without oiling because it will run anyway, not perfectly but it must not stop. Again, the forum has many many repetitive threads, which will tell you always the same things, just as any book would.
Hope you are all well.
I have a 6309a movement that came as part of a Seiko 5 'ebay special' I bought last year.
It would run for a few seconds and then stop again.
The hairspring had a bit of a kink in it which I very gently 'straightened' but the same problem occurred.
Strangely, the watch would run for a while but when I put the case back on and turned it face up, it would stop, every time.
Also, the oscillating weight feels very slack despite the screw being tight.
Any ideas of what it could be or advice on where to start with fault findings id be very grateful.
Thanks in advance.
Good question. I need reading glasses since I'm that age. I've not tried a lot of combinations but I've found that optivisor works well since you can wear glasses under them. I've mounted the extra magnification loup on my right eye when extra magnification is needed. If higher magnification still is needed, I use a standard Horotec loup in a head band without glasses.
The drawback is that the optivisor is somewhat bulky and sometimes tend to be in the way and you can "feel" that you wear it and after an hour or two you may need a break.