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meanoldmanning

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  1. I think you’re referring to a comment I made in your post about Seiko mainsprings. I did not say he was the master, I said something along the lines of I think he has a bit of experience with the Seiko 7S series of movts. I’ll add my experience with the 700x series which is the basis for the 7S series and beyond: - The GR springs are close but not exactly equivalent to the springs I’ve extracted from 7002 barrels - they were slightly thinner and not quite as wide. I found, and your experience may be different, that the original used MS worked better than a new GR equivalent. - I’ve had terrible difficulty cleaning and re-greasing the barrel and mainsprings for these movts. I’ve used 8217 and found using the same quantity I might use in a 6309 allowed the spring to slip too soon and too dramatically. If I cut the quantity in half it worked better but still not great. I have not tried using a lot more nor have I used Kluber. - I eventually stopped screwing around with splitting these barrels open since Seiko never intended for them to be and started using factory new replacements which come complete and ready to install. - BUT, and it’s a big but, while I can get expected reserve out of the factory new replacements when wound at the ratchet screw I and some members on one of the Japanese watch forums have experienced issues with building reserve when worn. Not certain if it the reduction wheel being worn down or the hooks on the pawl levers not quite being sharp enough to wind the watch efficiently. Or maybe sitting at my desk during the day isn’t enough activity for these movts. Sent from my iPhone using Tapatalk
  2. I’m going to suggest, only because it’s was the first automatic I worked on, a Seiko 6309. They are abundant in basic watches, have a very simple automatic winding mech and pretty straight forward keyless, no unruly springs to ping off into oblivion and unless they are completely beat up you can achieve good results. Sent from my iPhone using Tapatalk
  3. Sorry about John, I’m usually accessing the forum through Tapatalk and the guidelines tab isn’t easy to find. Sent from my iPhone using Tapatalk
  4. I think you found the auction. If not try auction number 133304315381 Sent from my iPhone using Tapatalk
  5. I don’t know what rules are for posting links to live auctions so do an eBay search for NOS New Seiko 201 024 as there is currently a listing. They are kind of pricey considering how inexpensive the actual mov’t is though. Sent from my iPhone using Tapatalk
  6. Yeah, they pop up from time to time on eBay. Also search for 0201.075. That was the subsequent part number. Sent from my iPhone using Tapatalk
  7. I’d kind of like JDM’s thoughts on this as he has a bit of knowledge on these. In my experience with the 7 series mov’ts is that the barrels obviously aren’t meant to be split opened and serviced, but replaced outright with a new b/a/ms unit. They are available on eBay from a couple sellers. If opening, cleaning and greasing is your ultimate preferred way to go I’ve found the tiniest amount of 8217 on the barrel wall seemed to work best. I found if I used as much as I do in say, a 6309 the spring would slip too easily. Sent from my iPad using Tapatalk
  8. Not vertical. I kind of spaced out on that and regret it. DU and DD were nearly identical which isn’t surprising. I did simply put everything back together though, and while it’s not ideal I’ll go ahead and run it again and compare the results. Curiously, on a slightly different point, the oiling across the pallet faces seemed kind of light to me. There was an obvious line of oil but kind of faint Sent from my iPhone using Tapatalk
  9. I was curious about Seiko oiling the pivots at the factory, and since I hadn’t really paid attention when disassembling a mov’t from this series I figured I’d go ahead and pull off the balance assembly and pallet fork from an unused 4R36 and see what was going on. Sure enough it appeared to have been oiled at the factory. Here’s how it was running beforehand Dial up, hour off ‘full’ wind Dial up 12 hours off ‘full’ wind Dial up 24 hours off ‘full’ wind Sent from my iPhone using Tapatalk
  10. I agree it doesn’t seem to matter on this design, though I tend to set the weight on the resting position nearest the stem. Sent from my iPhone using Tapatalk
  11. The orient mov’ts like the one in this thread all appear to have a automatic framework very similar to the Suwa mov’ts like the 63xx series, which is quite different from the 7 series movements winding mech. Sent from my iPhone using Tapatalk
  12. See if this helps https://accurist.co.uk/wp-content/uploads/2015/05/the-grand-comp-instru.pdf Sent from my iPad using Tapatalk
  13. Note that complete barrel/arbor/ms for the 7S26A as well as the 7S26B (part numbers 201.024 and 201.075) both work in the 700x mov’ts but the one from the 7s26C will not (201.083). Keep that in mind when looking on Cousins. Sent from my iPhone using Tapatalk
  14. I’m definitely a hobbyist hack, so keep that in mind, I find myself grabbing my brass tweezers more often than anything else. Sent from my iPhone using Tapatalk
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