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Seiko 7s26A


TheFixer

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7S26 has A, B, and C versions but not "plain 7S26". The barrel complete was changed in the B version as noted in my sheet https://docs.google.com/spreadsheets/d/1sYt_mI9c4tAPiKN3IM8lQx3NEEOyz2DMjVHx5I1_Mqw/edit?usp=sharing

Before buying be very sure that the barrel complete really need replacing. You could be spending almost the same as for a brand new and better mov't for no good reason.

 

 

Edited by jdm
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2 minutes ago, jdm said:

7S26 has A, B, and C versions but not "plain 7S26". The barrel complete was changed in the B version as noted in my sheet https://docs.google.com/spreadsheets/d/1sYt_mI9c4tAPiKN3IM8lQx3NEEOyz2DMjVHx5I1_Mqw/edit?usp=sharing

Before buying be very sure that the barrel complete really need replacing. You could be spending almost the same as for a brand new and better mov't for no good reason.

 

 

Thank you.

Cousins has a 7s26 listed but not a 7s26a.

I am a big fan of the A movement as it is the best variant.

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9 minutes ago, TheFixer said:

I have found an alternative spring which is cousins part no: GR2378X

0.95X.12 X400 X10.5

Ever so slightly thicker but the nearest I could find.

Check thread below about adaptability of generic mainsprings to a Seiko barrel. 

In general the best approach is to leave the sealed barrel alone. While you may think that it is the mainspring to cause a Seiko watch to run poorly, that is rarely the case. 

 

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28 minutes ago, jdm said:

Check thread below about adaptability of generic mainsprings to a Seiko barrel. 

In general the best approach is to leave the sealed barrel alone. While you may think that it is the mainspring to cause a Seiko watch to run poorly, that is rarely the case. 

 

Thanks for that but the other mainspring mentioned is no longer available.

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