AP chronograph movement question?

[DoxaDavid]

Question for one of the resident experts.

So as I understand it, my Rubberclad and my new Bee have the same Calibre 3126/3840 movement correct?

Curious if that's the case because while it likley means nothing, when I manually wind the Rubberclad it is so quiet, I have to put my ear to the case to hear it is actually winding and on the Bee it can felt as well as easily heard. Maybe this is because the RC is from 2008 and the Bee is new so perhaps that has something to do with it?

I'm not concerned as both are operating as they should and keeping great time but was interested to hear what you guys think.

Thanks for my continual education

[TSW]

Tour RC has the 2326/2840 Caliber and the Volcano the 3126/3840.

Perfectly normal

[orangedial]

My ROO comes with the older 2326/2840 movement and the winding can hardly be noticed as you have described. I've tried winding the 3126 movement and it feels more 'resistive' and louder comparatively. Both are normal.

[DoxaDavid]

Interesting...didn't realize they were different movements.

It makes sense now that they "behave" differently. When did they change calibre and anyone know what the differences are? My Rubberclad is from 2008.

[TSW]

The 2326 in your RC is the JLC-based movement with a Chrono module from Dubois-Depraz, The 3126 is a in-house base movement also fitted with the module from Dubois-Depraz.

Difference

* 2326 has 40h PR while the 3126 has 60h
* The 3126 has the gold rotor blade and a bit nice finish on the movement
* The anti-magnetic cages is build a bit different to each other

Both movements are great in my opinion

[kilyung]

While AP's no slouch, JLC movements are like butter.

[DoxaDavid]

Originally Posted by kilyung

While AP's no slouch, JLC movements are like butter.

It's really quite a difference. Not that I doubt the AP in house movement is great, but it sounds like any of my older watches with chrono 7750's when being wound. You can hear the zzzzzzzzzzzz clicking of the gears as the spring gets wound where on my RC, it is so quiet and smooth, one has to hold it to your ear to make sure it is actually being wound!

I'm no expert but that JLC seems to be one well engineered movement!

[kilyung]

Originally Posted by DoxaDavid

I'm no expert but that JLC seems to be one well engineered movement!

I'm a HUGE JLC fan. They're not called the "watchmaker's watchmaker" for nothing!

[m6894]

I think you are hearing the click-wheel that disengages the roter when you wind. There is a good article on the net on the 3120. I'll try and find a link.

The clicking is pretty loud on my 15400

[m6894]

Found it. I'm no expert but I like looking at the pretty pics...

http://www.p178host.com/apgallery/3120/

Excerpt from linked article:


"While automatic winding, the four tiny claws are inclined into the grooves and transfer the
rotation. Handwinding the movement causes the claws to slide out of the grooves and to disconnect the automatic train. This creates a smooth, silky "click-sound". Finally the torque is transmitted to the barrel through an intermediate driving wheel (similar to the driving wheel between crown and ratchet wheel, both use ball bearings and are press fitted onto the underside of the barrel bridge.)"

[Fred_Tan]

My bee is noisy as hell as well.
Maybe that's what a Bumble Bee is suppose to do.


I think it's ok.

BUT, I don't know 100% for sure.

From my own prior experience of winding countless of manual winding watches previously, I say there'll be HUGE variation in winding resistance & noise across models & even within same models from same year.

Me think it's gotta do with natural process variation when the parts are machined & finished.

[kilyung]

Really? My bee has been very quiet.

[The Joker]

Originally Posted by kilyung

I'm a HUGE JLC fan. They're not called the "watchmaker's watchmaker" for nothing!

"watchmaker's watchmaker" I'm trying to think exactly what that means, is making my head hurt.

Is it like a double negative

[kilyung]

Originally Posted by The Joker

"watchmaker's watchmaker" I'm trying to think exactly what that means, is making my head hurt.

Is it like a double negative

When AP needs a movement, they used to call JLC. JLC has the most number of in-house movements ever. I don't believe they've ever used an ébauche in their own watches.

[The Joker]

Originally Posted by kilyung

When AP needs a movement, they used to call JLC. JLC has the most number of in-house movements ever. I don't believe they've ever used an ébauche in their own watches.

Ok that makes sense.

[iLLGT2]

Originally Posted by kilyung

While AP's no slouch, JLC movements are like butter.

That's for damn sure....... My bee's winding is not the smoothest of my bunch.. Strange

It's ,y rubberclad first and as mentioned, hardly noticeable until about fully wound, then Grand Prix,panda,bee ! Weird

[iLLGT2]

Originally Posted by Fred_Tan

My bee is noisy as hell as well.
Maybe that's what a Bumble Bee is suppose to do.


I think it's ok.

BUT, I don't know 100% for sure.

From my own prior experience of winding countless of manual winding watches previously, I say there'll be HUGE variation in winding resistance & noise across models & even within same models from same year.

Me think it's gotta do with natural process variation when the parts are machined & finished.

Seriously bro mine too ?!? Just came back from ap also so I know nothing is wrong with it !