Timing issues

[Bloodtkr]

I just serviced a Soviet era Zaria 2009 and I'm having trouble getting the amplitude up. Lift angle set at 44.3 degrees. Readings before service were 144 degree amp. and -247 seconds. The hair spring is fixed so the beat error stayed at 3.6ms. After a good cleaning and lube the amp. went to 149 degrees and the rate was -60 seconds. No matter what I did the movement performed poorly. I checked everything and all looks good. The watch is in excellent shape.

On another watch, Slava 24xx, Russian, after a service the beat error is 0.0, the rate is -/+10 and the amplitude is only 169 degrees with a lift angle of 49 degrees.

My question is, does the Zaria 2009 perform this bad always or are they good movements? Am I missing something? Mainspring is clean and lubed and appears to have good power.

Dan

[schnurrp]

I just quickly looked at a Zaria 2009b and it appears you can adjust the beat error. I think with a beat error that high performance is going to suffer. Why didn't you adjust that?

[Bloodtkr]

I just quickly looked at a Zaria 2009b and it appears you can adjust the beat error. I think with a beat error that high performance is going to suffer. Why didn't you adjust that?

As stated in the post, the hairspring is fixed, no adjustment can be done.

[Misterpeter]

If the hairspring is fixed, you can still turn its collet (with a tiny screwdriver, or an oiler), in order to get the balance's pivot, the impulse pin and the anchor pivot in line.
You can expect 0.0 ms on a few positions.

About your Slava, 170° after being serviced is not that great, you should get about 270 on horizontal positions. There's something wrong somewhere.

[Bloodtkr]

If the hairspring is fixed, you can still turn its collet (with a tiny screwdriver, or an oiler), in order to get the balance's pivot, the impulse pin and the anchor pivot in line.
You can expect 0.0 ms on a few positions.

About your Slava, 170° after being serviced is not that great, you should get about 270 on horizontal positions. There's something wrong somewhere.

I took the balance/hairspring out and cleaned it real good and de-magnetised it 3 times. Beat error dropped to 1.2ms and amplitude went to 236 degrees, rate is holding steady -+11 seconds/day.

I have never turned a collet on the balance. Is this a skill for the novice to try?

Dan