Ok. Got it all disassembled, and cleaned then reassembled and lubricated. Checking twice for which lube goes where. Now, after setting the balance (which took forever to get the impulse stone in right) it seems to be running really slow. putting it on the timegrapher and it goes for about 10 seconds before it says 'beat rate auto detect', it doesnt seem to be able to pick it up. What could i do to strengthen the balance? It is running visibly slower than the last time i had it assembled! go figure...
I missed what you did differently this time. Did you install a new balance complete?
![wvusb37lnwjb1[1].jpg](https://omegaforums.net/data/attachments/1838/1838726-f44b48dd367356c8d4f95ea4619346ac.jpg?hash=5KOUCmekVw "wvusb37lnwjb1[1].jpg")
The fact that you had so much difficulty installing the balance complete could be related to the problem you are having. I can see that happening if you have a very extensive beat error caused by the impulse jewel being way off compared to the mid-point of the banking pins.
Below is the best image I could find on the web to show you what I mean. Without the pallet fork installed and the balance at rest, you should see the impulse jewel somewhere in between the two banking pins. If it's slightly off centered, you would have some beat error. If it's off by a lot, you would have the issue you are describing and installing the balance would be hard like you experienced.
I'm not a watchmaker, so if any experts see an issue with what I'm saying, please chime in. I'm trying to help but I also wouldn't want to waste anybody's time.
If the amplitude increased that much by just adjusting the regulator, you could be having an issue with the hairspring or the regulator pin. The amplitude looks good in the last photos. The beat error is high, but I’m hesitant to tell you to fix that as it’s a very delicate process on this movement. That still doesn’t explain the fluctuation in the amplitude. I’m assuming you demagnetized the movement.
It’s hard for me to further troubleshoot this remotely. Let’s see if someone with more experience chimes in.
You would want to reduce the beat error to below 2.0, but you will need to do that by rotating the collet of the mainspring. This movement does not have a stud, which would make the adjustment a lot easier. I would watch some videos before attempting it. It’s very easy to damage the hairspring in the process.
Do a google search on timegrapher readings. You will see how it’s supposed to be a straight line unlike yours. This should give you an idea: https://www.beyondthedial.com/post/collector-guide-interpreting-timegrapher-results/
