Fixed it! - then broke it.... Sportivnie 2634

[rjenkinsgb]

I acquired an old soviet era watch a while back & got around to trying to get it running a few days ago.

It needed a good clean - and the mainspring was in two pieces. That was also of a design I'd not seen before, with a riveted end tag that had "ears" which engaged slots in the barrel base and lid. As I'd not been able to find any identification for this movement (until today), I was not hopeful of setting a replacement spring; the few possible matches I could find were silly prices.

 

I have an "Anchor assorted mainsprings" pack, and one type in that looked a good match, other than it having a conventional end that needs a step in the barrel wall.

I broke the remains of the old spring off its anchor near the rivet, so the flat end of the anchor was double thickness. That went in the barrel with the new spring hand wound in to press it against the barrel wall in about the right place to line up with the retaining slots.

It worked! it fully winds and runs nicely. I cleaned up the raised (through-stamped) digits on the dial by carefully rubbing it on a fine sanding stick, as they were just a dull tarnish colour. It looks pretty good!

 

Going to put it in the case, trying to remove the stem - I slipped and snagged the second hand. It won't re-attach as it has the end of the seconds wheel staff still in it - it broke, flush with the top of the cannon pinion.  .

Parts search begins! I believe the movement is a Sportivnie 2634 - but please let me know if I have that wrong.

 

[AndyGSi]

Looks like a ZIM or Pobeda 2608

Edit

https://watchguy.co.uk/repair-and-service-1st-moscow-watch-factory-sturmanskie-штурманские-calibre-1-54/

Edited July 21, 2024 by AndyGSi

[RichardHarris123]

I think the spring is a T end from your description.  How did you slip trying to remove the stem and catch the second hand?

[rjenkinsgb]

9 minutes ago, RichardHarris123 said:

I think the spring is a T end from your description.

Very similar; the attachment is shaped more like the one on the "Double brace pin end", less the overhang and second rivet.

 

I had the movement at 45" on its edge on the bench, to keep the hands & face clear of everything while removing the stem.

It slipped while trying to press the stem release and pull the stem; flipping around so I was gripping it front to back rather than side to side & the second hand hand snagged in the nitrile glove as it turned.

 

I may have already got the replacement parts! I was in the middle of buying a different Soviet watch from an overseas seller & asked if he had the spare part for this one - he offered me a complete watch with the same movement, at a very reasonable price.

 

[AndyGSi]

4 minutes ago, rjenkinsgb said:

he offered me a complete watch with the same movement, at a very reasonable price.

 

So what movement have you got?

[rjenkinsgb]

19 minutes ago, AndyGSi said:

So what movement have you got?

Poljot / Sportivnie 2634 17 jewel; this is the site I identified it on; it's the centre of the bottom row:

https://mroatman.wixsite.com/watches-of-the-ussr/sportivnie

Searching that calibre on google results in photos of the same movement.

Mine is probably in fact 2634A, as that seems to be the 17 jewel with hack.

[rjenkinsgb]

5 hours ago, AndyGSi said:

Looks like a ZIM or Pobeda 2608

Thanks Andy, from what I can see, that's the 15 jewel base model; the 17 jewel shockproof, hacking, version is a Sturmanskie / Sportivnie 2634

More info on this movement:

https://www.watchuseek.com/threads/17-jewel-sturmanskie-gagarin-from-q2-1957.3916082/

 

[AndyGSi]

I still can't figure out where this 2634 originates from as I can't find any records showing this as a movement reference.

I know there were a lot of undocumented movements from the eastern block around this time but think someone has created this number.

I think this is actually what it is but figured as you only wanted the second wheel and pinion you'd just get a 2608 for £10-£15.

[rjenkinsgb]

7 hours ago, AndyGSi said:

as you only wanted the second wheel and pinion you'd just get a 2608 for £10-£15.

That's exactly what the seller suggested; actually a complete watch ten euros.