"Official Ploprof Club"

[RobbDizzle]

I don't know if I'd want a 4813...I was all about swapping one into my PO until I did some diggin. Everything I've read says it's essentially an overclocked 21J, and the increased beat compromises reliability.

 

[Pakz]

Well, I don't know... I've got 2, but they're still too recent for me to draw any definitive conclusion. Plus, the movement is still fairly recent, the first batches might have been plagued with some problems which are now solved, hence the rumors on reliability, or maybe these are justified...

Anyway, they've both been ticking very well indeed, and keeping time well within COSC specs... something I never had with a 2813...

I don't know if that smoothness and added precision comes at the expense of the long term reliability, though...

 

[RobbDizzle]

Well definitely keep us posted...Ofrei sells4813's for cheap (like $35) so if yours holds up I might just do it to the Ploprof....

 

[davemul]

Woohoo, my Lay QC video and pics are up

http://www.replicamake88.com/qc/4164-3-omg07101/

NO idea how to interpret the watch monitor.. can anyone assist?

 

[atespo]

Woohoo, my Lay QC video and pics are up

http://www.replicamake88.com/qc/4164-3-omg07101/

NO idea how to interpret the watch monitor.. can anyone assist?

BEAT NUMBER: How many beats per minute the watch is running (28,800 is a high beat). The higher the beat the smoother the sweep is on the second hand.

LIFT ANGLE: "the angle of rotation of the balance wheel while it is in contact with the pallet fork. Typically for most modern wrist watches this is 52 degrees."

RATE: how many seconds per day the movement will gain/loose time (9 is excellent)

AMPLITUDE: bascially means the tension of the main spring. As close to 270 as you can get is perfect.
"when the mainspring is fully wound, the balance wheel swings very wide, on the order of 270 degrees end-to-end. As the tension of the mainspring ebbs, the amplitude decreases, until it is on the order of 105 degrees end-to-end near the end of its useful power reserve"

BEAT ERROR: not sure how to properly describe this, but its how "off" the beat is in the watch, if this is off skew it will throw everything else off.

Everything on yours looks A-OK.


the bold & italic definitions are quoted from other message boards

 

[RobbDizzle]

Here's some good info from our fearless leader, from the "movements" forum here on RWI:

Oke, let's address these one by one.


We have 'BEAT: AUTO 28800' - what is the 28800 referring to? Is it how many beats per hour? Yes, it is beats per hour. In this case (28,800) it equates to 8 ticks per second. Common beat rates are:

5 beats per second....= 18,000 bph = 2.5 hz
5.5 beats per second = 19,800 bph = 2.75 hz
6 beats per second....= 21,600 bph = 3 hz
7 beats per second....= 25,200 bph = 3.5 hz
8 beats per second....= 28,800 bph = 4 hz
10 beats per second..= 36,000 bph = 5 hz

Then we have 'Lift Angle: 52.3 degrees' what is that all about? Lift angle is the angle of rotation of the balance in which the roller pin is in contact with the pallet forks.Lift Angle is used to along with the rate to calculate Amplitude. It is not measured by the machine, it is set before testing to the correct value for the watch. This is usually between 50 and 52 deg for common MVT types but much higher for a co-axial escarpment like in a gen Omega. A Unitas 6497 however is only 44deg. If this is not set correctly all measurements will be off. I am not sure of the correct beat angle for an a7750 MVT but no doubt a little research on the gen fora would find it. If not, an email to Shanghai Watch (in SIMPLE english) requesting the correct lift angle, and amplitude for the 3L chronograph would get an answer.

'Rate: + 0.00s/d' is this seconds per day lost or gained? Roughly speaking, yes. It is not a real world measurement tho as it varies depending on the position of the watch which is why COSC MVTs are tested in 5 or more positions.

'AMPLITUDE: 305 degrees' does this refer to sound of the movement? No. Amplitude is the number of degrees thru which the balance wheel rotates, usually around 260 to 315deg. anything above 315 is getting a bit on the high side and may cause issues. 305 is fine, 280 to 300 is more or less perfect.

'BEAT ERROR: 0.7ms' ? The difference (in milliseconds) in the length of beats. The lower the better, anything below 1.2ms is fine in these MVTs, below .9 is desirable, 0 is perfect with the COSC testing requiring below .5 in all positions.

Hope that clears that one up.




Col.

 

[Josh]

^^Very good info thanks for posting.

 

[PolonusTM]

just very nice pack of gen photos:

http://picasaweb.goog....

 

[davemul]

Thanks for the info guys!

I rejected the ploprof though as the date was not central. Looked off to the right. He is getting another one for me

 

[atespo]

Okay, where to find another datewheel for my white plo? Ive been looking at gen photos and the date font on my white Plo is not bold enough. Its not centered so when it goes out for lume I was going to have them center the wheel. BUT if there is a bolder font date wheel I can find somewhere that would be even better.
Any suggestions?
Also, what do you guys think about removing the AR on the outside of the crystal? Mine seems to be getting easily smudged and there are a few tiny fine scratches in the AR.

 

[Aza]

...there are a few tiny fine scratches in the AR.

Yeah mine is the same, and its a bit annoying really. My much cheaper watches have a better looking crystal than my Ploprof, due to the tiny scratches

 

[PolonusTM]

Now I am officially in:

(sorry for quick lame phone image)

PloProf from Joshua:
- Swiss 2834-2 (he promised his version is true brand new ETA) very smooth sweep
- perfectly centered date
- no scratches on AR
- the first thing was to mod "PUSH" button by replacing both springs - works now
- very tight bezel
- minute hand, orange rubber and bezel lock button - the same color

I think, after seeing so many QC pictures posted on this and other forums, that Joshua really has best pieces, something like "hand picked" and the rest takes the rest of them....

 

[Pakz]

Looks great!

I'm probably getting one (rather) soon from Josh as well, albeit I'm more thinking asian clone than "swiss ETA".

By the way, where did you find the small spring for the "push" button of the clasp?

 

[Inushuk]

Hey ... here is mine... Just did some quick picts

Ploprof V2 comes from Angus less than 5 days to Paris
- Asian 2824
- perfectly centered date
- no scratches on AR
- no issue with the claps
- Orange rubb
- Waiting for an original Omega 24mm Mesh

It will go to finedd next week for relumming the index the hands and the bezel for a nice blue lume as I think the original lume is a bit weak

 

[PolonusTM]

Looks great!

I'm probably getting one (rather) soon from Josh as well, albeit I'm more thinking asian clone than "swiss ETA".

By the way, where did you find the small spring for the "push" button of the clasp?

I just cut-opened spare spring bar, remove the long spring from inside, cut it into pieces and put one piece INSIDE each original spring in clasp then assembled PUSH button again. Works

Since spring bars were for water resistant watch I think springs will be "water resistant" too, and not going to rust etc. Anyway, I found spring-bar springs little too weak so I will replace them soon. Meanwhile, I did such a dirty mod:

I cut a piece of strap and pressed it into the extension hole.

 

[atespo]

If anyone knows where to source a better thicker font white datewheel, please let me know!

By the way, where did you find the small spring for the "push" button of the clasp?

I got the springs I used out of a Bic lighter. It works 100% flawless now. You can YANK on the one side of the clasp (while colsed) and it will NOT slip open at all.

Here are a few photos I took and posted to another forum and thought I would share them here.

 

[PolonusTM]

I got the springs out of a Bic lighter, too. Now works flawless, indeed Tried on suppa-parts mesh but... like orange rubber more.

 

[Josh]

 

[PolonusTM]

Clooney with PloProf - nice find.

 

[RobbDizzle]

Nice Josh! Didn't know he was a Ploprof kinda guy.