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Elgin Grade 81, Wrong Regulator

Here are a few "before" images of this next movement. I was told this watch was repaired several years ago. Whoever did it added an incorrect regulator. Note that the style of regulator arm now on the watch extends backward over the balance cock, but there is no index there. The index is a separate part out on the top plate.


This is functionally OK, but it's wrong. The original Elgin part for this watch would look much nicer.

Also, the screw holding the balance cock is a way too long case screw. It doesn't match. Sometimes I see a replacement screw on the balance cock because the threads in the plate have been striped by over-tightening (it's soft brass). But in this case, the threads seem fine. Who knows what happened to the original screw. I'll put a correct on in there is I possibly can.
Find more "creative repairs" here...

This is the underside of the balance cock. There's something fishy about the jewel that's been used. It looks like it's been crammed in there and the brass pushed around it. It safe to assume that this isn't an Elgin part, and was not altered to fit properly. The jewel itself looks OK though. It's not cracked or anything, and it seems to be the correct general type and hole size.

The timing screws on the balance wheel have been treated really badly. They have been lightened by filing off material, so much material that the slot is literally gone on some of them.


Lightening the balance wheel would make the watch run faster - in this case a lot faster. That was probably because of other problems that watch had that were not correctly addressed.


Here are the ratchet parts. These are in very good condition, luckily.


The rate on this movement is too far off for the timing machine to give me a basic ballpark. I had to put a minute hand on and watch it for an hour. As I expected, because of all the weight filed off the balance wheel, the movement is way too fast now.


This previous "fix" breaks a couple of watchmaking principles. 1) Never alter existing parts to adapt to a replacement (the incorrect regulator in this case), and 2) never do anything that can not be undone.

The correct regulator and balance cock screw...

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