Elgin 556

[Murks]

Hi before a go on a want  to say that i understand what people said to start with newer watch but still like to fix the older movements that a have home have a question again this is regard to the elgin 556 that a previously downloaded pictures of  a was looking for a balance staff on cousinuk but couldn't find it so a went for the alternative ones but I'm not sure if that's the right staff for it  feels to long and keep damaging my jewel can someone check for me if this the right staff a had previously purchased? Ronda S711 or rond DCN722 staff can someone check if this word fit elgin.

 

Edited January 14, 2024 by Murks

[JohnR725]

1 hour ago, Murks said:

damaging my jewel

I'm curious how the balance staff damages your jewels?

When replacing a balance staffs I have something which we could call a golden rule. That is measured the old staff write all the dimensions down. You need those dimensions when purchasing a new staff to make sure you get the right one. Then you still need to dimensions when the new staff comes to verify that all of its dimensions agree with the old staff. This way you'll hopefully avoid unpleasant situations

so here's a page that lists balance staff sizes unfortunately yours is at the very bottom of the page but it is readable

2 hours ago, Murks said:

Ronda S711 or rond DCN722 staff can someone check if this word fit elgin.

 

Now the unfortunate problem of this is I have to look these up for you and figure out what size they areFortunately the cross reference catalog and it looks like the 711 perhaps

Then going to cousins looking up the second number cousins makes an interesting suggestion of Balance Staff (DCN722), Illinois 66-12? I don't quite think that's right at all let's see what it thinks about the other number. For the number of S711 Cousins has no idea what that is but I'm going to assume it's the same as the 711 I have in the book

Now because everybody uses different letters for different things found their catalog image for dimensions location

I did copy and paste my dimensions up above below the replacement because it makes it easier to look at things oh and of course the listing order is not always the same even letter representations of which dimension is which is not always the same. Plus we don't have your measurements of the original and the replacement just in case there are variations which there almost always are.

So the length 3.10 agrees for both of them

balance seat original 0.81 versus 0.82 Should be close enough hopefully.

Hairspring seat 50 for both at good.

Roller seat 0.34 versus replacement of 0.33

Now we run into the minor problem of replacement has dimensions that my source doesn't list in my source has dimensions that the replacement doesn't list but overall the staff looks very very promising.

Now I get to make a guess. Replacement does not list the diameter of the pivots. The original is 7 1/2 yours is probably a bigger which would be my guess of you trying to show a big pivot into a small hole in your break the jewel that would be my guess is that's my interpretation of what you are trying to convey.

So hopefully I've interpret your question correctly?

 

[Murks]

Thanks alot mate for the help I understand this are thing I'm still learning as I'm progressing 

How do a see the size dimensions when purchasing staff on cousin normally a just  type the model of the watch and it  just shows wat staff when a purchase the staff it doesn't normally show the dimensions?

[CYCLOPS]

you need an 8/0 Elgin staff, you are also missing the cap jewel for your escape wheel .....