I saw the SARX039 in person. I haven't found any good pictures (or any mention of it, anywhere) but you can just about see the D on the rotor weight on Seiya's page.
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Recently upgraded 6R15C/NE15B
As Jake mentioned last time, SII has upgraded popular 6R15B movement to 6R15C. If you use TMI products, that's NE15 to NE15B. The upgrade includes:
1) Add one jewel on main plate, barrel hole (6R20 has that jewel already)
2) Modify ratchet sliding spring
3) Modify date indicator maintenance plate
4) New balance wheel
5) New barrel
Looked carefully, adding jewel and modify ratchet spring are all related to upgrading of barrel (to higher power reserve, so higher torque). Modify date plate is due to widely complains of date misalignment. SII upgraded balance wheel might aim to increase long term stability. The previous 6R15 all have difficulty maintain long term (1-2years) stability in accuracy.
1) Add one jewel on main plate, barrel hole (6R20 has that jewel already)
2) Modify ratchet sliding spring
3) Modify date indicator maintenance plate
4) New balance wheel
5) New barrel
Looked carefully, adding jewel and modify ratchet spring are all related to upgrading of barrel (to higher power reserve, so higher torque). Modify date plate is due to widely complains of date misalignment. SII upgraded balance wheel might aim to increase long term stability. The previous 6R15 all have difficulty maintain long term (1-2years) stability in accuracy.
41 - 56 of 56 Posts
You can see the D much better at CreationWatches.com on photos of the recently released SPB035, SPB037 and SPB039. I would include the link but my post count is too low.
So I contacted Seiko about this. I didn't really expect a good answer, but here is the pretty stock response I got:I've noticed that some newer watches are now using 6R15D. Anyone have any information about the upgrade? The number of jewels is still 23.
From this I am guessing that it's mainly just another parts standardization like previous versions, where they made certain components interchangeable with the 7S/4R movements. Although, since there have been reports of accuracy/amplitude issues with the 6R15C (Spencer Klein talks about this in a recent video), I had wondered if they had tried to address those problems with the new version. In which case they probably wouldn't admit it to some guy who asked about it in an email.In response to your inquiry, we would like to inform you that there is no difference between 6R15C and 6R15D, both of which have the same specifications.
Concerning the characters C and D, since they are manufacturing identification, they do not have any significant meaning for end consumers.
Seems there are more variants, wonder what are the fixes
6R15E
http://kakashi.forumfree.it/script/...0ZjUvTGlzdGFfbW92aW1lbnRpX1NlaWtvX3YxXzEuanBn
& 6R15S
https://www.watchuseek.com/f21/how-accurate-your-seiko-6r15c-1680922.html#post13943242
6R15E
http://kakashi.forumfree.it/script/...0ZjUvTGlzdGFfbW92aW1lbnRpX1NlaWtvX3YxXzEuanBn
& 6R15S
https://www.watchuseek.com/f21/how-accurate-your-seiko-6r15c-1680922.html#post13943242
The first link has a reference to a footnote indicated with a superscript lower case e. (Let's not get into the question over 23 vs. 24 jewel count that the footnote raises).Seems there are more variants, wonder what are the fixes
6R15E
http://kakashi.forumfree.it/script/...0ZjUvTGlzdGFfbW92aW1lbnRpX1NlaWtvX3YxXzEuanBn
& 6R15S
https://www.watchuseek.com/f21/how-accurate-your-seiko-6r15c-1680922.html#post13943242
The forum post shows a 6R15B and the poster refers to 6R15s (plural).
Which video?Although, since there have been reports of accuracy/amplitude issues with the 6R15C (Spencer Klein talks about this in a recent video)
yes wich video?Which video?
my 6R15 is the one with the lowest amplitude inside my collection of two 7S26, one 4R36 and one 6R15.
is amplitude a known problem of the 6R15 watches?
Probably a little late, but anyway. Here's the video:yes wich video?
Does anybody know whether Seiko modified the 6R15C in order to address these issues? There isn't much information on the new 6R15D out there.
As discussed in other thread, there is no issue and these are only the unproven rants of a single individual.
Hope this BS will not continue or I will have to flood the thread with timegrapher pictures of different 6R15C, of which I've taken many. Guess what? All were just fine.
Hope this BS will not continue or I will have to flood the thread with timegrapher pictures of different 6R15C, of which I've taken many. Guess what? All were just fine.
It will be interesting to see if the current Seiko's that have the 6R15 movements will eventually be migrated towards the 6R35 movement? If that is the plan, then 6R15 movement which was introduced in 2006 will get sunset. I predict the pricing will trend upward as well for the watches will come with the new movement.
According to fratellowatches that is happening already with the new version of the Sumo, raised to €850 from €600.It will be interesting to see if the current Seiko's that have the 6R15 movements will eventually be migrated towards the 6R35 movement? If that is the plan, then 6R15 movement which was introduced in 2006 will get sunset. I predict the pricing will trend upward as well for the watches will come with the new movement.
Seems like the only difference is the power reserve, and one jewel more (on the bottom barrel I guess).
That leaves it still being the Swiss and Citizen competitors beating at 28,800 and thinner. For that Seiko will command a much higher price with the 6L35 model to be eventually introduced.
Weird thread resurrection...
Yes I expect the 6R35 will be the new mid-range movement from now on. The additional jewel is already in the C and D version of the 6R15, even though the dials still say 23 jewels. I guess they can update the movement, but they can't update the dial without making it a new model. We might see gradual model upgrades throughout the 6R15 line along with new releases, but there's a lot of them and it will take a while. This is similar to the phasing out of the 7S movements in favor of 4R in the Seiko 5 line. The 6R and 7S movements will continue to be in production for a long time to come.
Swatch has pretty much abandoned the standard 2824 in favor of the 21600bph Powermatic variant. I see the 6R35 as an answer to that. I just hope they price it competitively.
Yes I expect the 6R35 will be the new mid-range movement from now on. The additional jewel is already in the C and D version of the 6R15, even though the dials still say 23 jewels. I guess they can update the movement, but they can't update the dial without making it a new model. We might see gradual model upgrades throughout the 6R15 line along with new releases, but there's a lot of them and it will take a while. This is similar to the phasing out of the 7S movements in favor of 4R in the Seiko 5 line. The 6R and 7S movements will continue to be in production for a long time to come.
Swatch has pretty much abandoned the standard 2824 in favor of the 21600bph Powermatic variant. I see the 6R35 as an answer to that. I just hope they price it competitively.
Correct, I had forgot about the phantom jewel. Not just the dial but also the rotor and the attached technical guide claim 23, which is wrong. The 24th is on the main plate for the barrel. You can see it on page 5 drawing, but not in the picture on page 9, which evidently is a B version.The additional jewel is already in the C and D version of the 6R15, even though the dials still say 23 jewels. I guess they can update the movement, but they can't update the dial without making it a new model.
With the 6R35 having stronger mainspring I would have thought they were to add one more on the main bridge, but perhaps is not needed as it's the click spring that takes the radial force.
Attachments
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10.4 MB Views: 205
C / D differences
I just ran into the attached Technical Guide (thanks Darak on WRT), which has is an explanation about the subject.
Jewels count stays the same at 23, but as discussed above that's incorrect.
I just ran into the attached Technical Guide (thanks Darak on WRT), which has is an explanation about the subject.
- Removed one slot for casing tab from main plate
- P/Ns detailed for parts used in different height versions. From these I desume that "Type Special" should be able to accomodate thicker dials, as some it uses some, but not all NH36 parts..
Jewels count stays the same at 23, but as discussed above that's incorrect.
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41 - 56 of 56 Posts
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