Re: Sellita vs. ETA again 9was Re: Future of ETA movements?)


"Alan K.Johnson" <ajohnson117@xxxxxxxxxxxxx> wrote in message
news:gHnwj.12450$J41.12023@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Gosh Jack, if you can't tinker with it then it takes all the fun out of
it! I have a Russian poljot 3133 and it runs fast I guess because it new
or the Russian's thought it would be ran with the second hand on.So I
bought a case opening tool thinking I could adjust it like a 2824 but did
I get a lesson because it has a funny little screw on a gizmo that is
horizontal and not vertical and I back out being unable to regulate it,got
any tips?

Best Regards
Keith

Tip #1 - get out of there before you cause any (more) damage.

Tip #2, assuming you ignore #1:

See this photo. I assume your movement looks like this.
http://home.netvigator.com/~mwheatl/reissues/DSCN1013.JPG

This watch does not have a fine regulator like a 2824 at all.

You'll see 2 arms going off the balance wheel - one around 7 o'clock (if
you imagine the balance wheel as a clock face) with that horizontal screw -
that is the stud carrier and you should not touch it at all. Pray that you
did not move the carrier or your watch is now out of beat - the "ticks" are
no longer the same as the "tocks". Turning the screw has no effect except to
release the stud, which I hope you didn't do. Without moving the arm, make
sure that you have retightened the stud.


Above that at just before 9 o'clock is the regulator arm. You can see the 2
brass regulator pins that the hairspring passes thru. By rotating the
regulator arm (like the hand of a clock) either closer or further away from
the stud, you can vary the effective length of the hairspring - the longer
the spring is the slower the watch runs. BUT, a little goes a long way -
what you want to do is take note of the current position (so you can get
back to it) and then give the arm the very slightest tap with a screwdriver
(in the direction of the stud to slow the watch down) - just enough to
barely move it. If you give it a nice big shove your watch will slow down by
many minutes/day. If the regulator is now at around 8:45, you want it to
point to 8:44:30, not 8:00. You also want to be very cautious not to slip
and damage the hairspring. Don't expect to get it on the first try - you'll
regulate and after a day your watch will now be 5 mins slow. You'll do it
again and it will be 3 mins fast . etc. Eventually you'll converge on the
best time. With a timing machine this is a 5 min job. Please consider
taking it to a watchmaker - the few $ you save will be a lot less than the
major repair job when you foul the hairspring.

Here is a view of the underside (of a different watch) so you can see what
is going on:

http://www.tp178.com/jd/watch-school/6/flat-at-stud-016.jpg

At the bottom of the picture you can see the stud and hidden under the
balance is the set screw that is holding it in place. Above that you can see
the hairspring passing between the pins of the regulator.

On an ETA, there is a fine regulator that is a little eccentric screw - when
you turn it it moves the actual regulator arm ever so slightly.


.

Relevant Pages

  • Re: Help needed.
    ... Potentially it is pointing to a hairspring problem, or your watch is ... careful, since you need to poke and push at a place where a simple ... Basically, where the balance wheel is, you will see the hairspring. ... the other is the regulator. ...
    (alt.horology)
  • Re: Question qbout "beat error"
    ... One reason a watch should be in beat is for the hairspring to use it's ... i'm guessing you will have a movable stud so it ... By design, when you push the stud, it moves together with the ... regulator, but the regulator should not carry the stud.. ...
    (alt.horology)
  • Re: Question qbout "beat error"
    ... Since each beat is 125 ms, your watch is about 123 ms on one side and 127 ... adjustment and rate adjustment in real time. ... i'm guessing you will have a movable stud so it ... regulator, but the regulator should not carry the stud.. ...
    (alt.horology)
  • Re: Question qbout "beat error"
    ... Since each beat is 125 ms, your watch is about 123 ms on one side and 127 ... i'm guessing you will have a movable stud so it ... By design, when you push the stud, it moves together with the ... regulator, but the regulator should not carry the stud.. ...
    (alt.horology)
  • Re: max slow still runs fast
    ... got it, with low amplitude. ... its not likely the hairspring was weakened by an aggressive cleaning solution because of the use of invar or something similar in the hairspring, the metal is fairly corrosion resistant. ... I would be looking at the curb or regulator pins to see how much space there is for the hairspring, if they too wide apart it will cause the watch to lose and limit how far to move the regulator to alter the rate, in other words you have to move the regulator a lot further than normal to make a change, the pins should be adjusted so they are straight and parallel to each other and allow just enough space so the hairspring will not bind when the regulator is moved. ...
    (alt.horology)