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.
Just to close out this thread concerning low amplitude, I finally got around to addressing the issue of too much lock. The pallet stones were probably not original as they were already set back into the pallet fork as far as they could go. I removed the pallet stones, ground down the back ends, reinserted them and applied shellac. After making some adjustments, the amplitude jumped from the initial 166 to 265 degrees.
@carlos123 ... considering the really good condition of both watch and dial I would put an aftermarket one ... $15 only on eBay https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F223245146447 Envoyé de mon moto g(7) power en utilisant Tapatalk
Thanks for the advice. I was worried about the film. I found the isopropyl left some white residue on the parts. Which is why I moved to acetone, but I can't wash pallets or the balance for too long in it. I also have petroleum ether 80-100.
Would you be able to recommend a product for me to try? I've never tried one of the ammoniated cleaning products. I could get some of the L&r fluid.