Etachron regulating limits

[OV]

Hi everybody,

please can somebody tell me what are the aproximative regulating limits
of a Etachron regulating mecanism? (ex. from - xx seconds to + xx
seconds)

Thanks very much!
OV

[Jack Denver]

Each hash mark on the etachron is about 5 seconds. IIRC, there are 3 hash
marks on either side so you get around 15 to 20 secs + or -, maximum. For
more regulation than that you have to move the actual regulator arm
directly, which offers unlimited regulation (but is trickier to adjust for a
non-watchmaker).

Post by OV
Hi everybody,
please can somebody tell me what are the aproximative regulating limits
of a Etachron regulating mecanism? (ex. from - xx seconds to + xx
seconds)
Thanks very much!
OV

[OV]

Am Wed, 14 Jun 2006 10:28:20 -0400, "Jack Denver"

Post by Jack Denver
Each hash mark on the etachron is about 5 seconds. IIRC, there are 3 hash
marks on either side so you get around 15 to 20 secs + or -, maximum. For
more regulation than that you have to move the actual regulator arm
directly, which offers unlimited regulation (but is trickier to adjust for a
non-watchmaker)

Thanks very much Jack!
OV

[m***@gmail.com]

Post by Jack Denver
Each hash mark on the etachron is about 5 seconds. IIRC, there are 3 hash
marks on either side so you get around 15 to 20 secs + or -, maximum. For
more regulation than that you have to move the actual regulator arm
directly, which offers unlimited regulation (but is trickier to adjust for a
non-watchmaker).

Post by OV
Hi everybody,
please can somebody tell me what are the aproximative regulating limits
of a Etachron regulating mecanism? (ex. from - xx seconds to + xx
seconds)
Thanks very much!
OV

OV,

You have to remove the autowind bridge to have easy access to the
regulator arm. It's pretty easy (two screws).

MV

[dAz]

Post by m***@gmail.com
You have to remove the autowind bridge to have easy access to the
regulator arm. It's pretty easy (two screws).

hmmm, no, he does not have to remove the autobridge to access the
regulator, he doesn't say which model he has, but even the cheap 2840
fitted in the Swatch auto is accessable, if his watch has a tail or
eccentric adjustment on the regulator he does not need to remove the
auto bridge, ok.

sure its easy to remove provided he doesn't slip and jab the hairspring
and balance, fitting the bridge back on he will have to make sure the
autowind gears mesh properly before screwing it down.

http://www.ofrei.com/page_183.html

[Jack Denver]

Some real rarities on that page - watches with "ETA" shields on the dial,
marked "ETAROTOR" on the back, an ETA tuning fork movement, etc. I'm
guessing that these were all saleman's samples from the '70s and were not
meant for sale to the general public. Someone who is interested in
collecting this kind of stuff should have a good look. Though good luck
finding a case that fits those dials.

As for moving the regulator without removing the autobridge, I think you
misunderstood the statement - of course if there is a regulator tail as on
the etachron-less Swatches you can move that directly and if there is an
etachron you can move that within its +/-15 sec range or so (and if the
watch needs more it may need to see a watchmaker in any event). But if you
want to move the regulator arm for adjustment outside the range of the
etachron (either because the loss is greater than the etachron can regulator
or because you want to keep the etachron centered for aesthetic purposes),
it is hidden under the autobridge in most models. For example, here's a
2824:


Loading Image...

The arm with the silver colored thing on the end is the stud carrier. The
regulator arm can't be seen.

Here it is with the autobridge off:

Loading Image...

and now you can see the regulator arm holding the brass colored regulator
pin carrier.

I'm showing this for the benefit of the other readers as obviously dAz knows
this already.

Post by dAz

Post by m***@gmail.com
You have to remove the autowind bridge to have easy access to the
regulator arm. It's pretty easy (two screws).

hmmm, no, he does not have to remove the autobridge to access the
regulator, he doesn't say which model he has, but even the cheap 2840
fitted in the Swatch auto is accessable, if his watch has a tail or
eccentric adjustment on the regulator he does not need to remove the auto
bridge, ok.
sure its easy to remove provided he doesn't slip and jab the hairspring
and balance, fitting the bridge back on he will have to make sure the
autowind gears mesh properly before screwing it down.
http://www.ofrei.com/page_183.html

[dAz]

Post by Jack Denver
Some real rarities on that page - watches with "ETA" shields on the dial,
marked "ETAROTOR" on the back, an ETA tuning fork movement, etc. I'm
guessing that these were all saleman's samples from the '70s and were not
meant for sale to the general public. Someone who is interested in
collecting this kind of stuff should have a good look. Though good luck
finding a case that fits those dials.

I think so, I used to see "ETA" brand in the service centre display
cases, just bare movements with or without dials, but there are some
nice movements there.

Post by Jack Denver
As for moving the regulator without removing the autobridge, I think you
misunderstood the statement - of course if there is a regulator tail as on
the etachron-less Swatches you can move that directly and if there is an
etachron you can move that within its +/-15 sec range or so (and if the
watch needs more it may need to see a watchmaker in any event). But if you
want to move the regulator arm for adjustment outside the range of the
etachron (either because the loss is greater than the etachron can regulator
or because you want to keep the etachron centered for aesthetic purposes),
it is hidden under the autobridge in most models. For example, here's a

no I didn't misunderstand him, just he gave a backhanded comment of
simply removing two screws, not necessary if you only want to tweak the
the regulator, while the OP may be quite capable of removing the back
and nudging the regulator, telling them to undo two screws and lifting
the auto bridge off could open a real can of worms, slipping and
damaging the balance with the screw driver, losing one of the screws,
etc, etc.

[OV]

Am Fri, 16 Jun 2006 11:33:39 +1000, dAz <***@zipDOTcomDOTau> schrieb:

Hi,

Post by dAz
he doesn't say which model he has, but even the cheap 2840
fitted in the Swatch auto is accessable,

its a 2824-2, sorry that I have not say it in my first post!
Everything went fine thanks to you two!

Regards,
OV

[dAz]

Post by OV
Hi,

Post by dAz
he doesn't say which model he has, but even the cheap 2840
fitted in the Swatch auto is accessable,

its a 2824-2, sorry that I have not say it in my first post!
Everything went fine thanks to you two!

good :)