Jump to content

Seikosha 851 Parts Source

bluerich

By bluerich
in Watch Repairs Help & Advice

 Share

Recommended Posts

bluerich Member

bluerich

Posted
Posted

Hello to all. I'm working on a Seiko Champion 850 with a Seikosha 851 movement and I would like to replace the main spring and barrel. I looked on Cousins under branded parts but I didn't find Seikosha listed. I did see a post that seems to link it to Enicar 1010 but on Cousins data sheet the barrel cap looks different as it has a small cutout on the edge and mine is a solid cap all the way round the rim. Does anyone know if this movement went under a different name and calibre and where I can find parts under the name Seikosha? Also, there is the number 37 stamped under the balance but don't know if that has any meaning. I've posted pictures and any help is greatly appreciated.

 

Champion 850 Mvt 1.jpg

Champion 850 Mvt 2.jpg

Champion 850 Mvt 3.jpg

Champion 850 Mvt 4.jpg

Champion 850 Mvt 5.jpg

Champion 850 Mvt 6.jpg

Champion 850 Mvt 7.jpg

Link to comment
Share on other sites
jdm Distinguished Member

jdm

Posted
Posted

You are fixing a 70 years old mov't, is not like you can expect to easily find new part off the shelf. If the barrel can be reused of fixed do that, for the mainspring measure it and order the one closest in size.

  • Like 1
Link to comment
Share on other sites
bluerich Member

bluerich

Posted
  • Author
Posted

Yes, it is an old timer jdm. I think I dated it to 1963 by the numbers on the inside of the case. I can reuse the barrel and haven't measured the mainspring yet but I know I can order by size as you suggest. I was curious about the mov't since I couldn't find any info & I've been pretty lucky looking up old mov't's that I come across. But you may have solved this for me rogart63. I didn't check Borel and went straight to my go to source which is Cousins. The link you sent does show SEK 851 and they have the mainspring listed for it. Once I measure the mainspring I'll compare to Borel and that may be it. Let you know and thanks so much.

  • Like 1
Link to comment
Share on other sites
bluerich Member

bluerich

Posted
  • Author
Posted

The mainspring measured 1.25 x 0.12 x 390 x 10.48(barrel) and it doesn't match the one on JulesBorel. Cousins has a GR3148 that is close but obsolete. Closest they have is a GR3149 1.25 x .125 x 420 x 11 which I don't think will work so, I'll keep looking.

Link to comment
Share on other sites
rogart63 Distinguished Member

rogart63

Posted
Posted (edited)
On 2/1/2020 at 5:36 AM, bluerich said:

The mainspring measured 1.25 x 0.12 x 390 x 10.48(barrel) and it doesn't match the one on JulesBorel. Cousins has a GR3148 that is close but obsolete. Closest they have is a GR3149 1.25 x .125 x 420 x 11 which I don't think will work so, I'll keep looking.

Would this work? https://www.ebay.com/itm/Mainspring-Ressort-Muelle-Zugfeder-Molla-SEIKO-840-4005-A-4006-A-5106-A-5126-A/163735974427?hash=item261f6cb21b:g:YQAAAOSww~BdBJ3J

Seiko springs are usually very good . So if it isn't broken u can probably reuse it . 

Edited by rogart63
Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • Michael20
      Questions about my Bravingtons Renown Mantel Clock

      By Michael20 · Posted

      Thank you OH, appreciate your input. 
    • oldhippy
      Saying hello

      By oldhippy · Posted

      Thank you for your introduction and welcome to this friendly forum. We all look forward to your contributions and continued involvement. 
    • Neverenoughwatches
      Epilame / Fixodrop

      By Neverenoughwatches · Posted

      Drat and double drat i was looking forward to the royalties on that idea.
    • oldhippy
      Questions about my Bravingtons Renown Mantel Clock

      By oldhippy · Posted

      Compression Spring Various Size. This might be helpful. I have watch furniture restorers and how they go about this problem, they inject glue underneath with a syringe and clamp it, leave over night. Next day remove clamp and it smooth. You could use an iron but be careful not to burn the wood.  https://www.ebay.co.uk/itm/265697329513?chn=ps&_ul=GB&var=565484998457&_trkparms=ispr%3D1&amdata=enc%3A1jd_-94ilTHWZLQ3PxHeC1A73&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&mkscid=101&itemid=565484998457_265697329513&targetid=1647205088320&device=c&mktype=pla&googleloc=1006662&poi=&campaignid=17206177401&mkgroupid=136851690655&rlsatarget=pla-1647205088320&abcId=9300866&merchantid=119334104&gad_source=1&gclid=Cj0KCQjwir2xBhC_ARIsAMTXk849TnBArEYdgv1DpHf_somCZYmB7ViqD3UtvNJJc_dn4kj0AFxBXngaArSAEALw_wcB
    • Neverenoughwatches
      Without Our Forum

      By Neverenoughwatches · Posted

      🤣 i think your first statement is rather dramatic, but i will take it in good humour.  I think the thread speaks for itself John.  What we are aiming for and when i say we, thats not actually that many that have spoke up. Is to have a back up plan to keep members in touch in case the forum ever disappears. So in essence yes the group has maybe taken on a life of its own and would like to remain together forever ( 🤣 i can also be dramatic )  maybe more members need to give some input of how they feel about it or say they are just not that bothered.  Either way at least the question gets answered. Can i ask what the forum means to you and how you would feel without it ? Thats one answer Rich from one person, without knowing how others feel the thread was just a waste of time. Aw Rich are you saying you'd miss me ? I'm touched 🙂
×
×
  • Create New...