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jdm

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jdm last won the day on February 19

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About jdm

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  1. I think the Horotec compact is small and powerful, but at GPB235 can't be considered "value". Its knock-offs aren't cheap either.
  2. Christan also replaces 7S26 MS http://watchguy.co.uk/service-seiko-7s26-0200-scuba-divers-watch/ In that case he restored amplitude and pattern. But when I tried the same or even a brand new barrel, it didn't help. Of course, there is an ocean of difference between respective abilities.
  3. But in 99% of the cases that's not needed with sealed Seiko barrels, and if done with bare hands or even gloves that will just introduce debris into it. I speak from the direct experience of many hours and tries backed up by timegrapher testing. If a entry level Seiko doesn't run good, be reassured it's not the mainspring fault.
  4. That's the point exactly, what you would do with other movements is not needed with sealed Seiko barrels, you don't gain anything messing with them. If you are looking to address a real problem and a way to increase amplitude on low ends Seiko look at the non-jeweled barrel bushings (just holes in the plates) which gets ovali with time.
  5. I believe Seiko has been using "sealed for life" barrels since many decades. Beside that is debatable if mainsprings needs to be greased (certainly not oiled), that applies to mov.ts with barrels and mainsprings designed to be opened and replaced. Seiko doesn't fall into this category. You will also have trouble finding a winder that fits well with Seiko mainsprings.
  6. To check if barrell / mainspring are OK just remove the pallet fork and click. With one or two turns of the ratchet, the train must spin fast. No need to open the barrel.
  7. Actually there are better ways, first is looking at the timegrapher amplitude and pattern.
  8. Check https://members.awci.com/AWCIWEB/AWCISearch/MemberSearch.aspx
  9. That's because Seiko barrels are not meant to be opened or the mainspring replace, and if not broken are better left alone.
  10. Please tell, how do you know that you need to replace the mainspring? It has broken?
  11. If that helps, Seiko calls 'A' the 9010. It also tends to spread.
  12. You are exactly right, cutting a tube in length is not that easy. I place it on a vice and pray that it helds. Cutting from inside seem a great idea. Let us know how you do.
  13. I recall this was asked recently and of course the answer is the same. As other members have noted already, this cannot be "cleaned" because is not "dirty". The paint has oxidized, which is an irreversible process, in some spots. If you want an antique watch with a perfect dial, buy one that has it since the beginning.
  14. clockboy, the OP is asking about a chronograph module, which is not made by ETA and is not described in their technical documents. I think the only way to obtain parts for it is from Brietling, or DP directly. http://dubois-depraz.biz/
  15. As mentioned above the specific 6R15 balance complete has a different P/N from the 7S26, even if clearly the overall architecture is the same. If you are beginner don't mess things further mixing parts. You do not have the right tools (including a timegrapher) and skills to do the work properly. Bring or send your watch to an independent watchmaker or Seiko service center. Otherwise sell the watch as it is disclosing the problem and buy another, these are very easy to sell or buy.