This one is interesting in that it did tick, and it looks really good and clean. However, during disassembly it was clean that it's lubrication was very old and gummy. Wheels stuck in the pivots the grease on the winding/setting parts was completely dry.
The mainspring was an almost new alloy spring with loads of strength, more than enough to drive the train right through the extra friction.
A truly clean, freshly lubricated movement needs very little power to run fine. In fact, a theoretical movement with zero friction would only need enough power to overcome the stationary mass of the gears and move them. But a stronger spring can push the mechanism through all sorts of problems, and grind away at bearings as it does so.
Elgin serial number 13782367 is a grade 315, 12 size, 15 jewels. made about 1909.
Follow the
album for this project here:
There could be some adjustment needed to the clutch. It's a little sketchy in winding mode. But it may be as good as it will get. I'll test it for a bit first anyway. The rate is good, with a low beat error.
