C11KAS showing wear on from driving gear??

[LittleWatchShop]

Take a look at these pictures.  Is this simply a result of no lubrication for a long time?

Or...is something else going on that I should investigate?

[Repivot]

Things which all contribute to the wear may be lack of lube, excess wear to the pin this wheel rides on, steel gear rubbing against the brass plates (as opposed to brass gear) and age. This is a high friction area, so wear will likely to show up eventually.

[LittleWatchShop]

16 minutes ago, Repivot said:

Things which all contribute to the wear may be lack of lube, excess wear to the pin this wheel rides on, steel gear rubbing against the brass plates (as opposed to brass gear) and age. This is a high friction area, so wear will likely to show up eventually.

Yeah...still working on this watch off and on today.  Something strange going on...something related to the power train.  I will report back when I figure it out. 

I did turn a temporary replacement for the missing crown wheel ring.  That fixed the winding oddities.  Since there was a missing part, I have to keep my eye out for other "issues."

[LittleWatchShop]

13 hours ago, LittleWatchShop said:

I did turn a temporary replacement for the missing crown wheel ring.

Actually, I turned two.  The first one I turned from an intermediate wheel found in the junk tray.  I had to turn it and grind it thinner.  Just about the time I got it finished and was installing it, it took flight.  Frustrated, I found another tiny washer of some sort that was made of brass.  I turned it down and got the watch working.

Then...later on...the little flyer flew back home where I found it in the skin drawer.  So I put it in the watch and took the brass one out.  Working fine.  I will replace my DIY when the replacement comes in.

Got some good practice on the lathe!

How did I mount the little wheel on the lathe for turning?

I used a brass tapered pin.  Pressed the wheel on to the pin, then put the pin on the lathe.  Worked well.

[HSL]

On 4/1/2021 at 12:48 AM, LittleWatchShop said:

Take a look at these pictures.  Is this simply a result of no lubrication for a long time?

Or...is something else going on that I should investigate?

I would think that is quite normal wear on an old watch of not so high grade.
To avoid what you see there one usually by design put in a small part which is elevated.
This is done since the teeth on the wheel sooner or later will get some burs which are chipping away material and resulting in the damage you see there.
One can avoid this by always check the wheel for burs and remove them at service and put just a microscopic dot of grease on the elevated part.

If the elevated part is worn away you need to address this issue and put a shim of some kind under the wheel. Otherwise, it will just be continuing to dig in to the material and make it harder to wind up.