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martik777
·Where can I find a stem for this or the specs to make one. I have a lathe.
Would anything on amazon fit with some tweeking?
Thanks
Would anything on amazon fit with some tweeking?
Thanks
Omega seamaster stem circa 1948-1952
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dsio
··Ash @ ΩFMoved to the watchmaking topic, Archer might have a suggestion, I tend to just get a watchmaker with a parts account to handle it for me on stuff like this
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Dan S
·I suggest you include the reference and caliber numbers. A photo of the dial isn't too helpful.
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Archer
··Omega Qualified WatchmakerPart number is 500-1106. Still available from Omega.
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Archer
··Omega Qualified Watchmaker
The 500 series stems are not the same as the 550 and 560 series…
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martik777
·Thanks. Do you know of any how-to's to remove and replace the old stem?
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sheepdoll
·Stems are one thing that varies the most in the 55x/56x series. The 500 stuff as I recall is based on 470. While some parts like the yoke and yoke spring and pressure spring are the same, the rest of the set works has subtle differences.
The calendar and quckset works require different stems. This affects the clutch wheel and winding pinion, 1107/1108 which have smaller holes on some calibers so they will not fit across the board. If one uses the wrong stem that is too small, it will simply pop out with the crown. More often the larger stem is pressed in too hard and cracks the plate. Why purchasing cheap plates online is not the best idea.
How many times I have got the wrong thing from ignorant eBay sellers. Wound up getting a bunch of 570 clutch wheels instead of 750 as I swapped the numbers. Omega's caliber numbers make no logical sense. The 570/571 is probably the rarest, few show up on auctions. Some refs note only 40,000 570 calibers were made. The other calibers had millions made.
All the stems in these work the same way. The pressure spring hold in the setting lever. It is released by pressing a button on the train side of the movement. (most other brands use a screw.) One has to be careful as this part is easy to break pushing to hard. The pressure spring also tends to be closest to the crown, and is likely to be rusted. If it loses tension the stem pops out. At least this part is common across the whole 47x to 75x 27.9mm range.
The calendar and quckset works require different stems. This affects the clutch wheel and winding pinion, 1107/1108 which have smaller holes on some calibers so they will not fit across the board. If one uses the wrong stem that is too small, it will simply pop out with the crown. More often the larger stem is pressed in too hard and cracks the plate. Why purchasing cheap plates online is not the best idea.
How many times I have got the wrong thing from ignorant eBay sellers. Wound up getting a bunch of 570 clutch wheels instead of 750 as I swapped the numbers. Omega's caliber numbers make no logical sense. The 570/571 is probably the rarest, few show up on auctions. Some refs note only 40,000 570 calibers were made. The other calibers had millions made.
All the stems in these work the same way. The pressure spring hold in the setting lever. It is released by pressing a button on the train side of the movement. (most other brands use a screw.) One has to be careful as this part is easy to break pushing to hard. The pressure spring also tends to be closest to the crown, and is likely to be rusted. If it loses tension the stem pops out. At least this part is common across the whole 47x to 75x 27.9mm range.