- Posts
- 6,716
- Likes
- 21,672
M'Bob
·Are Speedmaster cal. 321 dials/hands/movements as an intact unit swappable with a cal. 861 Speedmaster case, and vice versa? Assuming the stems stay with the movements?
cal. 321 dials/movements and cal. 861 dials/movements swap question…
- Posts
- 1,134
- Likes
- 1,689
ext1
·Generally yes, but there are slight variations from case to case, so sometimes slight adjustments are necessary.
- Posts
- 6,716
- Likes
- 21,672
- Posts
- 1,134
- Likes
- 1,689
ext1
·Thanks. Do you have a sense of where those adjustments tend to need tweaking when they occur - the case, dial, movement, etc.?
It depends- what's the situation you're in?
Usually it's the case that has the most issues (case includes pushers, dust cover, caseback). Then the hands, then dial no issues aside from caliber feet differences, then the movement (movement ring sometimes has issues)
- Posts
- 6,716
- Likes
- 21,672
M'Bob
·I’m thinking of retrofitting a cal 863 or 861 into a 105.003 case.
- Posts
- 1,134
- Likes
- 1,689
ext1
·That works, I've done it for a friend. If you recall, I was able to fit the 105.003 case to a Speedy tuesday 1 before, so there's that.
- Posts
- 6,716
- Likes
- 21,672
- Posts
- 1,134
- Likes
- 1,689
ext1
·No, the stem was fine but a 861 crown couldn't be used because it didn't fit the crown tube of the 321 case.
- Posts
- 6,716
- Likes
- 21,672
M'Bob
·No, the stem was fine but a 861 crown couldn't be used because it didn't fit the crown tube of the 321 case.
Thanks again. Might be getting above my pay grade, but here goes: so the existing stem from the 861 needed no length adjustments, and the crown for the 321 mated without issue to the external threads on the 861 stem?
- Posts
- 1,134
- Likes
- 1,689
ext1
·I simply reused the crown and stem assembly, so I am not sure about combining the 321 crown to 861 stem. But I think the stem issue is really trivial compared to the other things you might run into, like pushers being too long for the movement to fit, or dust cover too high for caseback to fit. (I ran into these issues recently)
- Posts
- 6,716
- Likes
- 21,672
M'Bob
·I simply reused the crown and stem assembly, so I am not sure about combining the 321 crown to 861 stem. But I think the stem issue is really trivial compared to the other things you might run into, like pushers being too long for the movement to fit, or dust cover too high for caseback to fit. (I ran into these issues recently)
Thanks, this has been really helpful.
- Posts
- 472
- Likes
- 629
watch_my_six
·Reviving this thread to ask a similar question: I'm thinking about putting a vintage 321 movement into my Speedmaster '57 Trilogy (I have my reasons), so I'm wondering if anyone has tried something similar (or into a FOIS) and might have an educated guess as to which components of the Speedmaster 57 trilogy might need to be substituted out upon putting the 321 movement into the '57 case?
I'm particularly curious about the crown/tube/stem or pushers, since based on my preliminary research and tinkering (the 321 measures 27mm x 6.74mm, and the 1861 measures 27mm x 6.87mm), I'm pretty sure the 321 will fit the '57 movement holder ring and dust cover/caseback). (I would be keeping the dial and hands of the '57). Cheers,
I'm particularly curious about the crown/tube/stem or pushers, since based on my preliminary research and tinkering (the 321 measures 27mm x 6.74mm, and the 1861 measures 27mm x 6.87mm), I'm pretty sure the 321 will fit the '57 movement holder ring and dust cover/caseback). (I would be keeping the dial and hands of the '57). Cheers,
- Posts
- 1,182
- Likes
- 5,425
Aludic
··@SpeedyBirthYearSounds like a rather bold project to me!
Whilst I cannot answer your initial question, I suspect marrying the ‘57 dial to a 321 movement won’t work without rather mayor intervention. The dial feet positions of a 321 differ from those of the 861 / 1861.
I would be keeping the dial and hands of the '57
Whilst I cannot answer your initial question, I suspect marrying the ‘57 dial to a 321 movement won’t work without rather mayor intervention. The dial feet positions of a 321 differ from those of the 861 / 1861.
- Posts
- 472
- Likes
- 629
watch_my_six
·Sounds like a rather bold project to me!
Whilst I cannot answer your initial question, I suspect marrying the ‘57 dial to a 321 movement won’t work without rather mayor intervention. The dial feet positions of a 321 differ from those of the 861 / 1861.
- Posts
- 5,340
- Likes
- 9,072
watchyouwant
·Dial feet position should be fine. But the thickness of the 861 dial feet is different to the 321 dial feet. Needs adapting ...
- Posts
- 472
- Likes
- 629
watch_my_six
·Dial feet position should be fine. But the thickness of the 861 dial feet is different to the 321 dial feet. Needs adapting ...
- Posts
- 1,581
- Likes
- 5,084
Eve
·Dial feet position should be fine. But the thickness of the 861 dial feet is different to the 321 dial feet. Needs adapting ...
The dial feet of the 321 are longer and slightly thicker than the 861.
While it is easier to shorten the dial feet from a 321 dial to fit the 861 movement, i would think twice before doing so.
- Posts
- 472
- Likes
- 629
watch_my_six
·The thickness and the length.
The dial feet of the 321 are longer and slightly thicker than the 861.
While it is easier to shorten the dial feet from a 321 dial to fit the 861 movement, i would think twice before doing so.
