Review of the New 29j Daytona Movement

[P_Diddy]

Hi Francisco,

great review especially with detail and meticulous care taken.

I am thinking about getting a Vintage daytona rep, does this use the same problematic movement as the modern daytona rep?

If the vintage daytona rep uses a different movement, then does that movement have a long life ?

Thanks

P_Diddy

[SMP Chrono]

Would definitely purchase a Rep Daytone the very day a really close version comes out... I have been spoiled by my SMP Chrono, I must admit even more so when it will be finished...

[Francisco]

Hi Francisco,

great review especially with detail and meticulous care taken.

I am thinking about getting a Vintage daytona rep, does this use the same problematic movement as the modern daytona rep?

If the vintage daytona rep uses a different movement, then does that movement have a long life ?

Thanks

P_Diddy

Only Daytonas with runing seconds at 9 are reliable.

Francisco

[MisterMister]

Francisco I saw these photos posted of a "new/upgraded" movement in the Daytona.

Is this movement different or any better than the one you reviewed in January?

[Francisco]

Hi:

The modification is in the top of the movement. Those pictures are fromthe back. It does not matter if the movement has a regulator or not. The problem are the gears that are rotating over the surface of the plate.

Regards,

Francisco.

[MisterMister]

Hi:

The modification is in the top of the movement. Those pictures are fromthe back. It does not matter if the movement has a regulator or not. The problem are the gears that are rotating over the surface of the plate.

Regards,

Francisco.

Ah thank you for the explanation. Pardon my ignorance

[johnjames218]

Great,

 

I just purchased a daytona and THEN i find this forum because i realize the seconds @ 6 are a bit stuttery.  Have i purchased a time bomb?? .

[bonauta]

Francisco,

 

Thanks for such a good review!!! new members like me learn a lot from stuff like this.

 

Thanks again!!

[tomwid12]

So what is the answer?  Are the new daytonas 29j as advertised?  

[tomhorn]

No, and this movement isn't new. Francisco wrote this review in 2009.

 

Francisco was pretty clear in the OP, which you must have missed.

 

 

CONCLUSIONS.

There are no more jewels in this mechanism.
The improvement consists mainly in employing skeleton gears to reduce the rotating contact surface.
The transfer for minutes is better designed that the seconds transfer. The seconds are always running and the design is still very problematic.
Although there are improvements… definitively this is not a long life mechanism.

Edited March 19, 2015 by tomhorn