Gen ETA 7750 question...

[sconehead 5]

Is the date change between 10 and 2 applicable to this movement as per the A7750?

[greg_r 81]

Is the date change between 10 and 2 applicable to this movement as per he A7750?

 

 

Good question. I've been told that it applies to ANY movement with a datewheel - which seems logical when you think about it, but I don't know for sure whether that advice is correct.

[AllergyDoc 40]

I believe it does. I also remember someone, Ziggy I believe, say/write that it applies to any movement where the date changes slowly as opposed to the ones that have the snap-change.

[onzenuub 308]

Adjusting

Time

 

Never set the time while wearing the watch (see recommendations about the crown).

 

 

To set the time:

 

Unscrew the crown (for a screw-in crown).

 

Pull the crown as far as it will go.

 

Carefully turn the hands to the right time.

 

Push the crown down and (for a screw-in crown) screw.

The time can be set at any moment.

 

Date: when changing the date, take the same precautions as for setting the time.

 

Either move the hands as though setting the time.

 

Or for a rapid date change:

 

Pull the crown to the first notch (generally).

 

Turn to advance to the required date. Most dates only move forwards. If you go too far, keep going until the correct date comes round again. Ideally, stop one day before the required date and finish adjusting by moving the hands.

 

Changing the date engages several wheels in the mechanism. Never make a "rapid date change" between 10pm and 2am as this is when the date-change mechanism operates.

Changing the date on a perpetual calendar is more complex (see Complications)

 

It is found @ http://www.hautehorlogerie.org/en/encyclop.../adjusting.html

[onzenuub 308]

Setting the Day and Date

Do not set the day or date of your watch between 8 pm and 2 am. This will seriously damage the movement, and such damage is not covered under the Ernst Benz warranty.

 

This one is from the manual of Ernst Benz watches with a gen 7750 movement.

http://www.ernstbenz.com/popups/inst_chronoscope.pdf

[sconehead 5]

Thanks boys, clear and concise from Onze, take a bow...we need a clapping smiley Greg...

[greg_r 81]

Thanks boys, clear and concise from Onze, take a bow...we need a clapping smiley Greg...

 

Added

 

[alphakazi 0]

I have the 1st 7750 put into a Navitimer in 1987 - It won't change the date between 9:00 and 2:00 - it feels like it could most definitely break if you push it