TC v4 DWO the same for Eta 2824 and 2836

[klocklind1]

Does anyone know if the DWO the same for Eta 2824 and 2836 ?

Will the TC V4 DWO ( datewheel overlay!) fit a eta 2836 movement?

 

[dropbear2008]

Should fit for both. 

[fabioliveri]

2824-2 and 2836-2 are the same movements, the only differences is one has the day and date  wheel and the othe just the days.

[sneed12]

2824-2 and 2836-2 are the same movements, the only differences is one has the day and date  wheel and the othe just the days.

 

 

This is false. They are very similar and share many parts, but they are not the same. The mainplates are different and many of the parts on the top (dial side) of the movement are different. Basically everything on the bottom is the same.

 

This can be important because for example, a 2836 date disc will fit on a 2824 but not vice versa. That's why building a low beat AP diver movement is such a pain in the ass.

[Ado213]

You will find the DWO fits better on a 2836-2 than the 2824-2, there is just that little bit more clearance between the date corrector and the top of the date wheel. Also 2836-2 come standard with H4 pinions, so no extra cost for changing the 2824-2 pinions if you need to.

[fabioliveri]

Form Eta.ch

 

 

 

 

2824-2

 

11½´´´

H 4,6 mm
Ø 25,60 mm

• Hours, minutes, sweep second.
• Self-winding mechanism with ball bearing.
• Date, corrector.
• Stop second device.
• Regulator system ETACHRON and regulator corrector.
• 28.800 vibrations per hour; 4 Hz.
• 25 Jewels.

• 
• 

 

 

 

 

 

 

2836-2

 

 

11½´´´

H 5,05 mm
Ø 25,60 mm

• Hours, minutes, sweep second.
• Self-winding mechanism with ball bearing.
• Date and day, corrector.
• Stop second device.
• Regulator system ETACHRON and regulator corrector.
• 28.800 vibrations per hour; 4 Hz.
• 25 Jewels.

 

• 
• 

[sneed12]

OK. So what? You're still wrong. There's a reason why the 2836 has the extra height, it's because the dial side of the movement is different.

 

 

The 2836 has a different date change mechanism. It has extra springs to power the instant change at midnight. The double corrector mechanism works differently. The hour wheel rides under a top plate. The calendar gear driving wheel sits on a pin machined into the mainplate (whereas on the 2824 it sits on a pin which is part of the thing that covers the date jumper spring). The cutout for the date disc is shaped differently, it's stepped on a 2836.

 

Many of the parts on the dial side of a 2836 are interchangeable with a 2824, but many are not. They are not "the same movements" at all--they're two different variants of the same basic design.

[klocklind1]

Thanks a lot Sneed:)

 

But can I use a TC dwo ( only the overlay that fits on top of the existing datewheel!) for an 2824 to be used on a 2836 movement?

[automatico]

Can I use a TC dwo for 2824 on 2836?

 

As far as I know yes as long as there is enough room between the dwo and dial. A 2836 has a little bit more room between the dw and dial than a 2824 after the day of the week stuff is removed.

This may be one reason why many replicas use the 2836.

[sneed12]

The other thing to watch out for is that on a 2824, the DWO can drag on the top of the movement. A 2836 has a datewheel which is slightly raised.

[DVNE]

More importantly, what case are you putting this in and what watch are you building? The stem heights are different.