Hi, my name is Ross. I am a rookie watch enthusiast and I am really puzzled here.
Could someone explain to me what kind of a problem am I facing with my timegrapher?
I do two sets of measurements with the same watch (1 day or 6 days apart) and receive vastly different results - to the point of being completely different from what I observe in real life.
For example, my timegrapher shows that my watch is running fast (or ahead of time), while in real life I observe that it runs 7 seconds per day behind. I even recorded a video about it so you could see it for yourself: https://youtu.be/mhGzf6aLMlY
How should I interpret that? Am I doing anything wrong?
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.
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Ok this movement is highly complex and it is not recommended for the novice, but then again when i started my first movement was a Seiko 6139 chrono and the watch is still running in my box but i had a couple donor parts movements. So if your going to undergo this endeavor you should try and get a parts movement which may be hard to find and also check out the link below. As far as cleaning goes an ultrasonic is not generally needed to do a good cleaning. Some distilled water with detergent nylon brushes and peg wood will suffice, you can rinse in 99% alcohol but make sure you DO NOT use alcohol on the pallet and balance wheel. You can get a decent ultrasonic for under $100 harbor freight has a nice one for $60 if you are in the USA. In that case you can use naphtha or Ronsonol lighter fluid. You can also do a naphtha soak prior to hand cleaning as well in order to attack dried up old oils. https://www.ebay.com/itm/Pierce-Cal-134-Chronograph-How-to-PDF-Book/372688650391?hash=item56c5f98097:g:R2YAAOSwRSddASsX