Thermocompensation: Methods and Movements

[migo]

Thanks, very informative!

What's the reason for the Seiko 8F being a 4F for ladies versions?

[Bruce Reding]

Thanks, very informative!

What's the reason for the Seiko 8F being a 4F for ladies versions?

Thanks, migo! I don't know for absolutely certain, but it's probably a size thing. (Ladies movements are often smaller to accomodate a smaller watch.)

[David Woo]

I was surfing around looking for info on the sinn ux movement, eta 955.652: and I was wondering about the thermocompensating movement.
A great read.
DW

[Bruce Reding]

I was surfing around looking for info on the sinn ux movement, eta 955.652: and I was wondering about the thermocompensating movement.
A great read.
DW

Glad you enjoyed it, David.

[dom]

Hi,

I am contemplating my first expensive quartz watch in the form of a Sinn UX. This watch runs on ETA 955.652. Could anybody please advise whether the particular quartz movement would be phased out eventually, leaving owners with no parts for repair when their watches are down. If it will be phased out eventually, are there any substitute/replacement to keep the UX running smoothly? Thanks.

[M4tt]

Hi Dom, you really have put this in the wrong place. I would recommend that you start a new thread in this forum.

The ETA isn't that rare so I think you are fine for a generation at least. I would be more concerned about the oil filled case which means servicing will be rather expensive. However, if you want it to last several generations you are probably better of with a mechanical.

[Catalin]

... but gets referred in a few other places on the forum is the one used in Citizen caliber 2730 (very interesting read) - basically one main capacitor with a thermal curve opposed to that of the quartz and a second smaller one that is 'added' by a thermal trigger ...

[asadtiger]

thank you so much Hedrick and Bruce for this informative article and this forum for HEQ watches cuz the mechanicals get so much pu8blicity and 'special' treatment, its unfair to not appreciate the truly marvellous feats in quartz watchmaking...thnx once again and great effort...lots of work must have gone into this which is appreciable....:thanks

[garfre]

Very informative article! I am surprised that only one caliber (9923) was mentioned as dual crystal under Seiko. I count 25 calibers in the 92, 94, 96, 97 and 99 Seiko analog quartz series.

Gary

[tony99508]

so citizen cal. 2710E-61, 2710F-06, 2730E-06, 2730F-06 are also TC anyone have any pictures of the watches that use these movements?