Jump to content

Dial will fit 2824 AND 8515?


Recommended Posts

So I'm working my way through my first project watch.  I'm sourcing parts on eBay and trying to assemble my first wristwatch.

I started with a case, hands, bracelet, and a Miyota 8515 movement.  I found a dial that I just FELL IN LOVE WITH:  

e5eba224-bf70-4434-9d97-ad52a0ee6433.jpg

 

The eBay description said the dial would fit BOTH and ETA 2824 and a Miyota 8515.  OK, whatever.  They can't put it on the internet if it isn't true.  So I ordered it.

When it arrives, I tried to mount the dial on the Miyota 8515 and it absolutely would not fit.   The dial feet wouldn't match up.

Well, I guess I'm a slow learner.  I ordered a Chinese ETA 2824 clone and new hands.  When they arrived, big surprise, it wouldn't mount.  Again, the dial feet:

fe882858-216e-4d9b-8c8c-422c0218e66b.jpg

 

I'm thinking it's only suppose to have TWO dial feet, and maybe I'm suppose to trim off one pair for the 2824 and the other pair for the 8515.  Does that make any sense?

Any feedback would be appreciated.

 

phy

Link to comment
Share on other sites

What sort of references are you looking for? I'm guessing there were no instructions with the dial. However if you identify the dial fixing screws on the movement you want to use it should be easy to work out which feet to remove.

Link to comment
Share on other sites

So I checked a few tech drawings, looked over my ETA 2824 clone movement, and decided what feet I needed to keep and what feet I needed to remove.  I plugged in my Dremel and cut off a foot.  Checked again, and it was one of the ones I needed to keep.

 

sigh....

 

Well, I cut off the two that DID need to get cut off, then ordered some dial dots.  

I fit the dial on the movement and fit the hands.  Then I wound the movement and let it run.  The hands jammed.  A little "adjusting" and the hands ran OK.  Then I put the dial & movement in the case.  It wiggles.  I need a movement ring, which I have no idea how to source.  Or fit, so that the movement gets held firmly in place but the rotor still turns.

Someone PLEASE remind me why I decided to build my own watch and not just buy an Invicta off of the Home Shopping Channel?

 

One other thing I learned - Adjustable movement holders SUCK.  I'm ordering an aluminum 2428/2436 movement holder off of eBay today.

 

By the time I'm done building this watch with its cheap Chinese movement, after buying & re-buying parts, and buying tools, oh God the money I've spent on tools, and am still spending, and all the time I've spent, I could have bought a Grand Seiko.

Link to comment
Share on other sites

If you know anyone with a 3D printer, you can get them to print you a custom movement holder or dial ring, or even a crystal spacer.

You *might* also get away with re-purposing a movement holder from a quartz watch.

A couple of the "Indian Special" that I picked up recently used cut down quartz movement rings.

Not a particularly elegant solution perhaps, but maybe it would do a turn till you get something a little more suitable. 

Edited by AndyHull
Link to comment
Share on other sites

Speaking of watches and 3D printers...

 

I know a company in Boston, only a few miles down the road from me, that buys old American pocket watch movements. 

There were several major companies in the States around 1900 that were cranking out pocket watches in numbers like a million a month.  One of these, Waltham, was about halfway between me and Boston, but there was also Hamilton, Eglin, and Illinois Watch Company.  Some of the Rail Road Grade movements were the equivalent of COSC certified chronometers.  During the Great Depression of the 1930s most of these that had silver or gold cases had the cases sold for scrap.  The naked movements were left in sock drawers across the country for decades.  

Now antique stores all across America all have dozens of vintage pocket watches in them, along with a few dozen naked vintage movements, and some of these at one time Rail Road grade, plus BUCKETS of random vintage pocket watch parts.

This Boston company is buying up these vintage movements and refurbishing them.  They are bring the Rail Road grade movements back to near COSC chronometer timekeeping.  And because it's a pocket watch movement they have ~60 hours of reserve from a full wind.

Then they have banks of 3D printers that can "print" in metal.  They print wristwatch cases out of brass, bronze, tin, aluminum, and steel.  Some of them are really beautiful.

And they sell these refurbished wrist pocket watches for modern Swiss watch prices.

Link to comment
Share on other sites

  • 2 weeks later...

I got the replacement dial I ordered.  I trimmed the correct dial feet this time, applied the dial to the movement and then the hands.

I wound the movement and I'm going to let it run for 24 hours to make sure the hands don't jam.  If it's running smoothly tomorrow night then I will case it up.

Wish me luck.

Link to comment
Share on other sites

Can I jump in on this thread with a related question? in addition to aliEpx sellers selling dials that fix eta and miyota there are also cases listed as fitting ETA2824 and Miyota 82 series but those movements have different stem heights (1.8MM v 2.5mm).

How does that work ?

 

 

Screenshot from 2019-04-10 15-48-17.png

Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • I didn't think pulling to set position would work harden the spring, in that position it is stressed where the arm starts. By work hardening i meant rapid polishing at that point, a bit like polishing a pivot work hardens as it compresses the steel. I doubt polishing by hand would achieve much in that respect though. Its finished, arm polished up mostly at the join to the bridge's main body. I'm ok with it, the screw holes aren't great as i had to open them up by redrilling and positioning it was difficult, I'm not much use with a loupe, opening up with a file might be a better option for me or i could just use the correct drill size 😅. And the detent is way too deep, i had to guess that with the stem release out of position and sat on top, but i only took one measure and went for it, no slowly slowly catch your monkey 😅. First go I'm happy , well sort of, it works and thats a big thing for me, next one will have a bit more finesse.  Anyone thats interested, after filing, i used a 2000 grade home made diamond  micro file and then 20 micron film, the film is much better than wet and dry, more stable to use and doesn't shed cheap grade grit everywhere , then auto polish on a sponge pad.
    • I'm assuming that every time you set the watch you are work hardening the detent spring, maximum hardening is  where it meets the plate due to maximum deflection.   That's why it snaps there.  The Young's modulus may be the same but after it's reached its maximum yeid strength it breaks.  My mechanic engineering is very rusty, correct me if I'm wrong. 
    • Ah ok yes that makes sense to polish it where the arm starts to form from the body of the bridge, i thought you meant the underneath of all the arm.
    • this is something I've never quite understood about the some of the Swiss companies. In 1957 Omega was using 9010 for the keyless parts with epilam. there's been a slow migration towards using heavier lubrication's but still typically oils and epilam to keep them in place. When it seems like 9504 works so much better.  
    • OK, welcome in the world of alarm clocks... I guess the 4th wheel is dished because it is from another movement. If it was not dishet, then it would not mesh with the pinion of the escape wheel, am I right? The marks of wear on the 4th wheel pinion doesn't corespond to the 3th wheel table position, at list this is what i see on the picts. Calculating the rate is easy - there is a formula - BR = T2 x T3 x T4 x T5 x 2 /(P3 x P4 x P5) where T2 - T5 are the counts of the teeth of the wheels tables, and P3 - P5 are the counts of the pinion leaves. Vibrating the balance is easy - grasp for the hairspring where it should stay in the regulator with tweasers, let the balance hang on the hairspring while the downside staff tip rests on glass surface. Then make the balance oscillate and use timer to measure the time for let say 50 oscillations, or count the oscillations for let say 30 seconds. You must do the free oscillations test to check the balance staff tips and the cone cup bearings for wear. This kind of staffs wear and need resharpening to restore the normal function of the balance.
×
×
  • Create New...