Re: Rate Adjust, Russian Aircraft clock



courir26@xxxxxxxxx wrote:
> I have one of the Russian aircraft clocks that seem to be flooding into
> the country right now.
>
> It seems to be well made, however the best rate adjustment I can get
> out of it in its range of +/- adjustment on the back is about +20 secs
> per day.
>
> I've never opened it. Is there a chance that the rate can be tweaked a
> bit better by internal adjustment where the +/- adjustment mates with
> the movement?
>
> I'm no expert, so be gentle . . .
>
> Thanks
> Tom

Does the back look like this? http://www.camerasrussian.net/mig2.bmp

The key to setting timing on balance wheel movement is to make very
small adjustments to what is probably a set screw. Also, the position
of the movement can have a significant impact on timing, so be sure to
display it the same position after winding. I doubt that there is a
finer adjustment within the movement. Finally, you may also be
fighting the effects of old dried out oil if the movement is not of
recent manufacture.

The dial and hands on those aircraft clocks are fascinating - do you
have a shot of yours?

.