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Raketa 2609 HA Parts


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2 hours ago, keflin2612 said:

Thanks watchweasol, loads of Russian movements but no Raketa 2609 HA "typical, just my luck" 😢

Maybe it's the same as another one, measure it to know.

And, maybe the original mainspring can still do good enough for the purpose of occasionally wearing a vintage piece. 

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I agree with weasol, take measurements and buy a generic spring.

Or buy parts movements on eBay and find a useable mainspring there. There isn't really anything wrong with using an old spring, as long as it is not seriously deformed by previous removal and insertion.

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The problem with going the generic route is that the 2609.HA uses a "T" end m/s, which dramatically reduces the range of what is available.

I just measured an old 2609.HA m/s as height 1.28mm, strength 0.11mm, length apptox 400mm (this is approx because the example that I have is missing its inner most coil but measured at 380mm). The nearest equivalents that Cousins has to offer are 1.30 x 0.11 x 280, which will have a shorter power reserve, or 1.30 x 0.095 x 320, which will still have a shorter power reserve but better than the 280 spring, but will likely give much lower amplitude. So unless you are able to find a more suitable generic elsewhere there will be significant compromise to be made.

If this is the route that you choose to go down then I would probably go for the first option and put up with having to wind the watch a bit more often.

I just checked the 1.25 height options that Cousins offers and there is a 1.25 x 0.115 x 360 T end (GR3142T) which is closer to the original and probably what I would go for. It's in a 10.5mm washer, and the Raketa barrel is just under 10.5 though so there is a good chance that it will need to be wound in by hand.

Edited by Marc
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