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Speedmaster 311 Micro Adjustment Upgrade w/PN's & Pics

  1. flyinb44

    flyinb44 Feb 15, 2018

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    Hi all,

    I'm new to the Omega forums. I recently purchased a Speedmaster Professional 311 and am very happy with the piece, besides the fit. As I've read, many people are having this issue and Omega as decided against producing half links for this bracelet for whatever reason. In fact, they didn't see fit to even respond to my customer service email inquiring about half links that was sent before I did some more research and found they didn't exist. Anyways, in searching the forums I found several examples of people replacing the clasp with the 1154 unit from the PO that has the 5 adjustment slots and most used the 1589 clasp end links. I ended up deciding to go a slightly different route and use the 4666 clasp from the 39.5 PO with 3 adjustment slots and the 4975 clasp end links. The fit suits me extremely well and the only disappointment I've found is that the end links don't have polished sides. I've included pictures below along with a list of part numbers that were sourced in a different thread (collected by another user) for the clasps and end links that can be used for those who are interested. I have approximately a 7.5" wrist for reference.


    Clasp end links:

    0118ST1589 - Polished sides, flatter appearance (Most popular option)
    0118STZ000015 – Speedmaster MKII – Triangle
    118STZ004975 –

    Clasps:

    117STZ001154 - (this is the most used one)
    117STZ001159 - (same as ^ w/ dive extension)
    117STZ004666 - (only has 4mm of extension)
     
    Omega 1.jpg Omega 2.jpg Omega 3.jpg Omega 4.jpg Omega 5.jpg Omega 6.jpg Omega 7.jpg Omega 8.jpg
    Edited Apr 19, 2018
    WurstEver, gmc1971, Tritium and 2 others like this.
  2. larryganz

    larryganz The cable guy Feb 16, 2018

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    That looks good. It also seems a bit cheaper than the 1589 + 1154 combination, which for the older Speedy pin bracelet doesn't come with enough pins and screws, while your setup does (8 screws and 4 pins needed for older bracelet, and your newer bracelet should have been able to re-use some of your old pins/screws.
     
    flyinb44 likes this.
  3. flyinb44

    flyinb44 Feb 16, 2018

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    Thank you. This clasp is about half the price of the 1154. The end link prices are comparable. I ended up with spare pins and screws with this set up as well. I think this clasp is more comparable to the original in size and I didn't need more adjustment than this so it worked for me. Should have come with the watch initially.
     
    Edited Feb 16, 2018
  4. larryganz

    larryganz The cable guy Feb 16, 2018

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    Fortunately my Speedy 3570.50 fits me well right now. But when summer hits I might have to add a link and move the clasp pin 1 hole shorter.

    Did you have to add or remove any links when you added the 4666 clasp? I know you have to do that with the 1154.
     
    flyinb44 likes this.
  5. LemansBoiler

    LemansBoiler Feb 17, 2018

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    Looking good! I did the micro adjustment clasp on my moon watch over Xmas break. This week at work was the first time I loosened it up a notch, it was really satisfying.
     
    OmegaFan503 and flyinb44 like this.
  6. flyinb44

    flyinb44 Feb 18, 2018

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    @larryganz : With the original clasp I had 3 removable links on the one side and 2 on the left to get it to be comfortable but was too big on my wrist by quite a bit. With 2 and 2 it JUST fit but wasnt comfortable and forget it the morning after a few drinks. With the 4666 clasp, i can go with the 2 and 2 with the clasp adjusted all the way in so I have some room for adjustment. Again, my wrist floats around 7.5" for reference.

    @LemansBoiler : Thank you! I adjusted mine out the other day when things got a bit tight and it was great having the option. Should have come this was from the factory. Did you do the 1154 clasp?
     
    larryganz likes this.
  7. LemansBoiler

    LemansBoiler Feb 19, 2018

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    Yep 1154 here.
     
    flyinb44 likes this.
  8. Lex_Lugga

    Lex_Lugga Apr 12, 2018

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    Just to clarify, when you go 2 and 2 with the 4666 and the clasp is adjusted all the way in, does that fit EXACTLY the same as 2 and 2 with the original clasp? Or is one slightly larger?
     
    flyinb44 likes this.
  9. Lex_Lugga

    Lex_Lugga Apr 12, 2018

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    Answering my own question as I just got this done today at an official Omega service centre.

    I can confirm that new adjustable clasp fits the exact same as the old clasp when it’s on it’s tightest setting.

    Thanks to the OP and others for sharing this info.
     
    flyinb44 likes this.
  10. larryganz

    larryganz The cable guy Apr 12, 2018

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    So, my local OB can’t find the 0118ST1589 links in their system anymore. I was trying to find the equivalent link in Titanium, to use the 1151 with my X-33 bracelet.

    Does anyone know the part number for the Titanium clasp links?
     
  11. flyinb44

    flyinb44 Apr 17, 2018

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    Mine fits slightly bigger than the original clasp with the 2 and 2 adjusted all the way in. Probably about a half link worth. Just enough. Hope you enjoy the mod.
     
  12. ranchracer

    ranchracer Apr 18, 2018

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    New member to the forum and Speedy ownership and been doing quite a bit of research on this. With a 7.5” wrist I can sympathize with flyinb’s conundrum. The damn thing’s either too loose or too tight. Can’t get the right fit so I’ve bailed on the bracelet and am wearing it on NATOs. I’d really like to get the bracelet dialed though. It’s way dressier for business.

    So just to confirm, this mod will work with a brand new sapphire sandwich with screwed links yes? What’s the difference between the various links? I’d prefer polished sides, so if 0118ST1589 fits that description, that’s the one I’ll order. Still not sure about the clasp, but I’m leaning towards 1154 for the extra adjustability.

    Thanks for the post. Best one I’ve found on the subject.
     
    flyinb44 likes this.
  13. flyinb44

    flyinb44 Apr 19, 2018

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    This mod should work with a new sapphire sandwich manual wind with screwed links. I do not believe it would work with the co-axial due to a larger case and bracelet size. If anyone knows differently, please feel free to chime in. The 1589 end links do have polished ends but are flatter in appearance compared to the others. I'd do some research and make sure you're happy with that look before pulling the trigger. As for the 1154 clasp, I didn't need that much adjustment for day to day fluctuation and the 4666 was approximately half the price if memory serves. The 1154 is also a longer clasp to allow for more adjustment so the removable link count estimates we've gone through on this thread will not apply. I'd be interested to see what you end up going with.
     
  14. bazderome

    bazderome Apr 19, 2018

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    Great thread thanks for it ! Will try it too !!
     
    flyinb44 likes this.
  15. larryganz

    larryganz The cable guy Jun 29, 2018

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    Same question as 2.5 months ago - my local OB can’t find the 0118ST1589 links in their system anymore. I was trying to find the equivalent link in Titanium, to use the 1151 with my X-33 bracelet.

    Does anyone know the part number for the Titanium clasp links? I have the Ti 1151 adjustable clasp, but without the part number I can't find the right links to fit it to my Ti Speedmaster X-33.
     
  16. gmc1971

    gmc1971 Jun 29, 2018

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    Could not Omega make a ton of cash by making a adjustable clasp? I'd pop for one. How many find the wrist just isn't the same size all day?
     
  17. larryganz

    larryganz The cable guy Jun 29, 2018

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    New dive watches and the Speedmaster Mk2 come with an adjustable clasp - we're retrofitting those clasps to our older watches, and sometimes you needs the newer links to connect the clasp to the older bracelet.
     
    gmc1971 likes this.
  18. dwboston

    dwboston Jun 30, 2018

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    The Apollo XVII 45th LE that I picked up recently came with the micro adjustment clasp as well.
     
    gmc1971 likes this.
  19. gmc1971

    gmc1971 Jun 30, 2018

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    Something tells me none them will fit this watch. It is accursed.
     
  20. larryganz

    larryganz The cable guy Jul 11, 2018

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    Does anyone know the part number for the Titanium clasp links? I have the Ti 1151 adjustable clasp, but without the part number I can't find the right links to fit it to my Ti Speedmaster X-33.