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Omega Railmaster CK2914 ~ Research Thread

Noir

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I am not that concerned about the dial thickness. I guess I will be able to sand it down by the bottom

The original Railmaster 284 movement used the taller cannon pinion, centre wheel, hour wheel, and sweep second pinion to counter for the the thicker dial. The taller parts are referenced as "H1" heights and they come from the 283 movement (I have the part numbers for those in case someone wants them)

I know that the ETA 2824 has varying pinion height kits for this particular issue. Are you planning on using an ETA or something else?
 
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Karbon74

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The original Railmaster 284 movement used the taller cannon pinion, centre wheel, hour wheel, and sweep second pinion to counter for the the thicker dial. The taller parts are referenced as "H1" heights and they come from the 283 movement (I have the part numbers for those in case someone wants them)

I know that the ETA 2824 has varying pinion height kits for this particular issue. Are you planning on using an ETA or something else?
the SM has a NH inside. so that will be it.
I will either sand the dial bottom or look to buy the right height pinions and wheels
 
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Noir

Getting To Know The Place
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the SM has a NH inside. so that will be it.
I will either sand the dial bottom or look to buy the right height pinions and wheels
Now that I think of it... If using the dial as is (thicc) it might throw off the stem alignment by 1mm with the case (supposedly, RM dials were all 1mm thick, but over the years of my research they varied from .8mm to 1mm)

So, sanding the dial may be the best way to use it in the SM case.
 

369mafia

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Now that I think of it... If using the dial as is (thicc) it might throw off the stem alignment by 1mm with the case (supposedly, RM dials were all 1mm thick, but over the years of my research they varied from .8mm to 1mm)

So, sanding the dial may be the best way to use it in the SM case.
That would be the easiest. since you have the sm dial as reference for proper thickness
 
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Karbon74

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the dial being 31mm, I have a fall back option with this Raffles Dial.

@dpd3672 do you think you help me print film free waterslide decals of the Railmaster ? I will do the work of vector and clean. I am unsure though of how to print "white"
I will be ordering some from AliX . those are impossible to find in France

I will still buy the Bi dial as it will be the reference for us
 

369mafia

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the dial being 31mm, I have a fall back option with this Raffles Dial.

@dpd3672 do you think you help me print film free waterslide decals of the Railmaster ? I will do the work of vector and clean. I am unsure though of how to print "white"
I will be ordering some from AliX . those are impossible to find in France

I will still buy the Bi dial as it will be the reference for us
The white is applied to the dial plate surface. generally painted on.
 
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Karbon74

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The white is applied to the dial plate surface. generally painted on.

yes. that's why I think that a waterslide decal could do the job, but it needs to be film free. I can retouch it by hand afterwards. and anyway, as I will age the dial, imperfection does not matter as it will mostly be under the ageing haze.

Plan A is still the Bi dial, of course.
 
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dpd3672

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the dial being 31mm, I have a fall back option with this Raffles Dial.

@dpd3672 do you think you help me print film free waterslide decals of the Railmaster ? I will do the work of vector and clean. I am unsure though of how to print "white"
I will be ordering some from AliX . those are impossible to find in France

I will still buy the Bi dial as it will be the reference for us
Yes, happy to help.

As 369mafia says, there's a few ways to do it. It looks to me like the dial is black, with mostly white printing, although the "Seamaster" is beige or off-white, unless my eyes deceive. The indices every 5 minute look like they're lumed over white.

So these are the options that come to me:

1) If printed on white decal paper, the white print would be white...you could possibly also print the "Seamaster" in what looks like an off-white (yellow? beige? I can't really tell). The issue is that when I've tried this, the white appears very dull and flat, which is not how gen dials usually look. Spraying over it with gloss clear acrylic paint might mitigate that considerably, I haven't gone too far down this road yet. If the original dial is flat, it might not look so bad, especially if you seal it with flat clear acrylic. It's also possible to paint the dial with white paint to enhance the white under the decal.

2) On clear decal paper, the gilt underneath the dial would show through, so what's white on the original dial would appear gold and shiny. If the dial underneath was painted white, it would be very similar to the above. Experimenting with different white paint underneath would give slightly different results.

3) Film free decal paper is something I'm just starting to work with (because it's hard as hell to source in the US, and shipping is brutal from Korea, where it's made). I think it has the most potential...I'd use it over the decals with film if given the choice, but that would make the beige "Seamaster" a bit more difficult to color match.

4) Some kind of heat transfer paper...pretty much the same as decals, but it would be another option. It would have to go over a white, painted dial as well, and would give the same issues with the beige font.

5) A "sticker." Basically, print the entire dial on a sticker...paper, vinyl, pvc, any material that matches the dial in texture/sheen. This is the easiest route, but can give issues with any kind of work you want to do to the dial after, if paint or lume or whatever can't adhere to the sticker (should be fine with paper, maybe not so great with vinyl).

6) No idea if this is even possible, but coat a brass dial blank with glossy porcelain, bake it, then put a negative print decal over that...or paint it black and laser etch away the "white" parts. It would look amazing, but I can't even imagine how hard this would be to do.
 
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Karbon74

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1. 2.

I am thinking of printing ONLY the white areas.
Logo, OMEGA, and Railmaster
That's why I am looking at the Raffles (and other) donor dials to modify by deleting the white but keeping the rest

The issue is that this won't work with normal decal as it will leave a film around the text.

The challenge will be positioning

3. same problem as in FR it seem
I am going to order this on monday... If it is what it says it is, then we are golden

4. great idea

5. the full decal would be a superior solution.

6. that's Monodoero territory. I don't have the skills, knowledge and gear to go there :LOL:
 
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Karbon74

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On with my research.

Finding a screwdown Omega crown that fits a 3.1 mm threaded tube is unfruitful ( what the hell is a 3.1mm anyway???) Am I measuring wrong?

I have found Crowns and tube with
4,37mm dia thread
4,0 mm dia
3,9 mm dia
2,6mm dia

I think that I will need to replace the tube.
Now, the SM tube is screw-in...so to put a new tube, it is quite certain that the tube hole will be too large after reaming

I am thinking of doing a metal epoxy fill and drill a new tube hole.

Thoughts?

Just found a possible solution
I can get double threaded tubes from cousins

4.0mm for the crown and more interestingly either 3.5 or 2.5 for the case side. which are pretty common sizes, so there is a fair chance the SM is one of those
 

Noir

Getting To Know The Place
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Just found a possible solution
I can get double threaded tubes from cousins

4.0mm for the crown and more interestingly either 3.5 or 2.5 for the case side. which are pretty common sizes, so there is a fair chance the SM is one of those
what about machining a case tube that will fit a reamed hole and the crown side to be 2.5mm?

Esslinger sells an intimation of the Seamaster 300 crown that is a Tap 10, 6.8mm dia, 3.5mm crown height, and 2.5mm tube

 

Noir

Getting To Know The Place
1/1/20
16
15
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what about machining a case tube that will fit a reamed hole and the crown side to be 2.5mm?

Esslinger sells an intimation of the Seamaster 300 crown that is a Tap 10, 6.8mm dia, 3.5mm crown height, and 2.5mm tube

*it's for the Omega 2913
 

Karbon74

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thanks.
The first thing is to dismount the tube and measure.

I am not in a hurry. Those projects can take a lot of time
 

369mafia

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putting a nice tool for reference here

Just found this amazing item on AliExpress. Check it out! US $33.60 30% Off | Press Type Watch Crown Tube Removal Tool Machine with 7 Pins Professional Watchmaker Watch Friction Tube Repair Removal Tools
I am struggling to see how that tool would remove a tube?

in the description its called a watch bezel opener.
 
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Karbon74

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yeah. I just removed a pressed in tube from a case today. That was not pretty to see and the tube is trashed 😅

not really an issue as the threads were stripped anyway...but it ripped my heart to do this like this