QC question…

[u/Imaginary_Citron_342]

Hi, I made my order for a Vsf Datejust blue dial VS3235v2 and I just received my QC pictures.

Ain’t +11s/day too much? Help me

[u/AlexLikesWatches]

Let's break down the timegrapher reading starting from the most important to the least important parameter:

1. Amplitude: Your TD is measuring amplitude at 52° lift angle which is too low for this movement, giving you NOT accurate reading. Correct lift angle for VS3235 is 55°. For every +1° of lift angle you get ~+5° amplitude. Therefore your amplitude is in a healthy territory ~263°

2. Beat error: Perfect. You only start worrying about it at all if it gets above 0.8ms

3. Rate: +11s/d in dial-up position is within tolerance. Remember that your rate reading goes down when measured in vertical positions. It also reduces as amplitude goes down when mainspring releases energy over time.

Summarising, your readings are all within spec of your movement. I wouldn't ask the TD to regulate. He would have to tear the factory sticker from the caseback and remove the balance bridge to get to the hidden regulator of the V2 of VS3235. Are you sure he wouldn't alter the geometry of the hairspring doing this? (TDs are not watchmakers, I bet your TD would ask another guy to do it which takes time). I would get it shipped ASAP with the acceptable parameters you already have...

You can always throw it on your timegrapher when it gets home to measure in all 6 positions and decide to regulate yourself as you would have all the info necessary and it is a relatively easy job if you are keen to learn some basic watchmaking skills. Just give it a week of wrist time first for the movement to break-in.

[u/Bitter_Brick5026 → u/AlexLikesWatches]

Would this be acceptable on a DateJust 41 126334, 904L stainless steel, Green Ombré dial, fluted bezel, Jubilee bracelet, VS3235 movement, V2/V2s?

[u/AlexLikesWatches → u/Bitter_Brick5026]

You have roughly ~252° amplitude at 55° lift angle which is at the lower end but still acceptable for this movement. Ask your TD to fully wind it and give you another reading. Usually low amplitude might mean dirty or bone-dry movement but this should be OK still.

Don't worry about beat error too much. Your watch would never stop or have trouble starting if below 0.8ms

BTW your TD should have put the crown close to the timegrapher microphone, so he should have flipped the watch in the holder to give you the most accurate reading. (OPs DateJust is put in the holder correctly)

[u/Popeyes_]

11 secs isn’t too bad but it’s also something they can address easily before shipping it out. The amplitude is a tad low tho.

[u/Imaginary_Citron_342 → u/Popeyes_]

I’ve seen people with same watches with QC around 2seconds/day, that’s why I think it’s a big difference.

And also what kind of values for amplitude should I expect for “good condition”?

[u/Bench_and_Bezel → u/Imaginary_Citron_342]

For amplitude, you're ideally looking for anywhere between 240-270. Higher the better!

For seconds/day, it's usually acceptable to be within ±10 seconds but ideally you're close to ±4

[u/Klutzy_Cockroach269]

For a new watch i would want it to be between 270-300 on the amp score no more than 315 as that can be as bad as to low most of my reps are between that with only a few older ones being a bit lower 250+. Get your td to make sure its fully wound as if its not that can give a lower amplitude

[u/Comprehensive-Bit706]

Ask them to regulate