Quote:
Originally Posted by Badhobz
i dont even know wtf im looking at but its all pretty neat stuff. i love tiny itty bitty stuff!!!
your wife: WTF YOU DOING!?!?!
you: what what!? I'm lubricating this tiny movement
your wife: heh.  |
That is the 'fourth wheel' which rotates once every 60 seconds. So when a watch has a seconds hand, it attaches to this wheel somehow
This movement, being basically an old pocket watch movement, has a post on it that goes right through the dial, which you put the seconds hand on directly. On the dial the hand will be beside the 9 o'clock (most would have this at the 6 o'clock, like the Rolex 1908 I posted above)
My watch does not have a seconds hand. So when Panerai orders their movements for this model, they get a version of this wheel that doesn't have this post. But the Chinese version of the movement only has one version of the wheel, so if you want to put it in a watch with no seconds hand, you have to cut that post shorter. Otherwise you can't put the dial on
The one on the right was my first attempt at doing this last year with no real tools. I used a file to shorten it, but it looks like I broke it right off. Also I cracked the jewel that it sat in. The thing actually worked somewhat, but would stop after a few minutes.
So the first thing I did was move the bridge over from the original movement that came with my watch with the non broken jewel, but kept this wheel. It worked, and had great overall timing, but when you look at the graph, the watch slows down and speeds up over the course of one minute. This is what gave away that something is wrong with this particular wheel
The one on the left is the one that came with my watch, snipped by whoever put the replica together. Yesterday I moved that wheel over too, and it runs perfect now.
What's keeping my latest build from perfect is that there is now a 1.0 ms beat error that I have to figure out. In reality this is irrelevant, but I know it can hit 0 so I want to get there.
Today I am going to re-lube the balance jewels - this is the hardest part of a basic service by far. I managed to do it the first time, but I probably didn't do a good job, and the oil probably touched the edge of the 1.3mm jewel. It has to stay in the middle. This will take a lot of practice to get right, but I am down.
If that doesn't fix it, I have to try regulating the beat error out. Not too hard on this type of movement, but I haven't tried that before
Edit: Regulated, this is dial down (all other positions good except dial up, which is probably due to bad balance jewel lube)
