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Posted

Hi All

Putting back together Elgin 18 SW/LS ... All that is together is the plates and gear train . The gear train will move for a moment then lockup ...If I fiddle with it a while it will move a little more making that familiar  gear train sound and lock up again. ...All the pivots can be seen in there respective jewels. I have taken it apart and re-installed gears several times with the same result. I am assuming the pallet fork is the culprit. But it looks to be in the correct position. 5890ce9c8fe7e_ElginB330696635.jpg.22548ca73639a0818c6060772f8df2bb.jpg

 

Anthony  

Posted

As I suspected ...I remove pallet fork and it spins fine... Yet I don't understand fork was in the correct postion between pins and in jewels. What am I missing?  

Posted

Well Now I did it ...I finally broken the escape wheel pivot ... Damn idiot.. I better learn how to re-pivot ..I have another watch that I purchased came with a broken escape wheel pivot, it cost me 14 bucks for watch ...escape wheel would cost $45 .. price of that escape wheel exceeds three times the cost of the watch...

 

 

Posted
As I suspected ...I remove pallet fork and it spins fine... Yet I don't understand fork was in the correct postion between pins and in jewels. What am I missing?  


Assuming you didn't alter the banking pin positions when disassembly. It's highly likely somebody else did ! Or wear over time has created the problem.
They are adjustable but really under normal circumstances should be left well alone as they were originally set by the factory a 100+ years ago.
Sorry to hear about the escape pivot.
Better luck next time

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Posted

My initial thoughts were the entry or exit stone were going to deep into the escape wheel and jamming due to incorrect adjustment or wear or bent pivots. Hope diagram will help for future reference.
When the balance is at rest the pallet stones in relation to the escapement wheel is optimum at Figure C. Ignore the pallet fork in the diagram (Bad drawing) it should be dead centre to impulse pin and banking pinsbac19c1a0709c6b80a0c6b1c97217d69.jpg

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Posted
3 hours ago, digginstony said:


Assuming you didn't alter the banking pin positions when disassembly. It's highly likely somebody else did ! Or wear over time has created the problem.
They are adjustable but really under normal circumstances should be left well alone as they were originally set by the factory a 100+ years ago.
Sorry to hear about the escape pivot.
Better luck next time

Sent from my SM-T585 using Tapatalk
 

digginstony

Thanks for the reply.. No I did not alter or go near the banking pins. The pivots were straight. I can't do anything now with broken escape wheel I will have to take a shot at re-pivoting or find a replacement.  Being a full plate it is almost impossible to see how the stones are interacting with the escape wheel with the top plate in place.  

Anthony

Posted
digginstony

Thanks for the reply.. No I did not alter or go near the banking pins. The pivots were straight. I can't do anything now with broken escape wheel I will have to take a shot at re-pivoting or find a replacement.  Being a full plate it is almost impossible to see how the stones are interacting with the escape wheel with the top plate in place.  

Anthony


Interesting. I assume we're not actually dealing with a pallet fork but an English lever.
Even so, there should be 2 inspection holes on the main plate to observe the stones

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Posted (edited)
2 hours ago, digginstony said:


Interesting. I assume we're not actually dealing with a pallet fork but an English lever.
Even so, there should be 2 inspection holes on the main plate to observe the stones

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I may have my terms mixed up ..it looks like the one in the pictures you posted (kind of looked like a fork so I assumed)...I took a look at the plates I do not see any holes for observation. check picture above other side no better.

Edited by adiorio110
Posted
I may have my terms mixed up ..it looks like the one in the pictures you posted (kind of looked like a fork so I assumed)...I took a look at the plates I do not see any holes for observation. check picture above other side no better.


Whether it be a Swiss type fork or English lever, the principal remains the same.
Finding a replacement wheel, the timing may need to be set up from scratch. There are Professionals on the Forum that guided me through the whole process that may help.
I've posted a couple of pictures regarding inspection of the pallet stones to the escapement wheel. Hope it helpse759b09e5f61e9f9cba67654c860ce90.jpg
24a31eda581bb5f64cd0721460ee0181.jpg

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Posted

 I see them now Didn't realize those holes were over plate Had plates lined up wrong when I was checking. 

I am going to try and re-pivot the escape wheel It looks like real precise work I hope up up to it. I first need to figure out the how to properly use the lathe I have for this operation. Seems it would be critical to have the whole dead center. I think I seen some type of centering guide somewhere but I forget where.

Anthony

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