APS 3120 movement disassembled pictures and video

[pam63C]

Oh yes... It's on the schedule

Looking forward and special thanks to you.

Also, would be great if you can also suggest what you can do, as a service to improve the reliability of the 4302 such as replacing stem or hairspring or certain parts of inferior quality.

Many thanks again.

 

[CTime]

Looking forward and special thanks to you.

Also, would be great if you can also suggest what you can do, as a service to improve the reliability of the 4302 such as replacing stem or hairspring or certain parts of inferior quality.

Many thanks again.

No problem mate, can you ask on the next thread about 4302? I will totally forget then

 

[legend]

Thank you @CTime for sharing this lovely set of pictures. It is very much appreciated.

@trailboss99 thank you for pinning this, you were simply a step quicker.

 

[Horace_Derwent]

Thank you @CTime for the review, you're not only a Vendor but first and foremost an enthusiast !

 

[tamomota]

Thank you mate for your amazing job as usual. This is why we appreciate this hobby

 

[Sig9]

thank you for those interesting insight

 

[majwilliams0308]

This right here is the date jumping gear. The gen is spring loaded, whereas the APS is just a flat tooth without a spring. This is why it is not an instantaneous change. If you can source this part in gen, you can get instant midnight date switch.

EDIT: THIS HAS BEEN ATTEMPTED AND DOES NOT FIT!

 

[legend]

This right here is the date jumping gear. The gen is spring loaded, whereas the APS is just a flat tooth without a spring. This is why it is not an instantaneous change. If you can source this part in gen, you can get instant midnight date switch.

In theory yes, but the gen part may not fit in practice. I am not saying it definitely cannot fit, or cannot be modded to fit, but I have yet to try it myself.
Like you implied, the part is relatively scarce and yes I have already asked my vendor for one to purchase for the purpose of trying it out, but there is no availability yet.

 

[legend]

In fact @majwilliams0308 looking at both gen and rep parts more in detail, I would say there is an 80% chance that the gen part won’t plug and play.
I’m still unsure if the gen part or rep movement can be modded to fit one to the other.
I’ll be very happy to be proved wrong!

 

[CTime]

This right here is the date jumping gear. The gen is spring loaded, whereas the APS is just a flat tooth without a spring. This is why it is not an instantaneous change. If you can source this part in gen, you can get instant midnight date switch.

Thank you for pointing it out, I'm still learning movement

 

[majwilliams0308]

In fact @majwilliams0308 looking at both gen and rep parts more in detail, I would say there is an 80% chance that the gen part won’t plug and play.
I’m still unsure if the gen part or rep movement can be modded to fit one to the other.
I’ll be very happy to be proved wrong!

Thanks for the insight! Would be worth experimenting with, if I can find the part with a good return policy lol.

 

[Kettle1]

Hiii my friends































This time we shot the APS Dandong 3120 clone movement, which has been in the market for nearly a year, and the overall repairing rate is not too high. We disassembled their genuine 15400 movement shamelessly. hope I won’t get beat up.































The genuine 3120 has been halted production, and the new one in the 15500 is 4302 movement. I asked my friends around and no one has it, so I was thinking about whether to take out my own money to buy one. 































3120 movement can fit in many models, such as 15703, 15710, 15707 and other common three hands + date models.































3120 movement was specially made for JF, but after that APSF took it over along with some accessories of JF and AP 3126 and so on. This would be another story I should just stop here.































The overall of this AP movement is not bad, some details are not so perfect, and the polishing can be better.































There are detailed disassemble pictures below which I was really enjoying. Most factories are unwilling to develop new movements now. Because people don’t really like replicas and some of them will report this. Noob is a typical example.































Without further ado, le







 















                    



No problem mate, can you ask on the next thread about 4302? I will totally forget then

Oh yes... It's on the schedule

Cant wait to see this one CTIME!!! Amaaazing work and thank you for your effort. Good to hear 4302 is on your list!!!

 

[sfbatman787]

Cant wait to see this one CTIME!!! Amaaazing work and thank you for your effort. Good to hear 4302 is on your list!!!

seriously cannot wait to see the 4302 comparison.

 

[WatchNoobs]

wow this is amazing! thank you! do you have the link to the video? thank you! @CTime

 

[jkrw247]

On the topic of whether swapping the rep date jumper wheel to the GEN part would work, there is a thread here which discussed the matter:

AP 15400 Dandong 3120 super clone movement teardown

The original video is from here: https://www.bilibili.com/video/BV1Hr4y117PA/?from=search&seid=11896973276005077324&spm_id_from=333.337.0.0 I uploaded it to youtube with English subtitle, I find it very interesting, it explained why this super clone doesn't have instant jump calendar

forum.replica-watch.info

@j21 confirmed that it couldn't be done.

Also, the GEN jumper wheel seems to be thicker than the rep date jumper wheel, so I suspect the answer is NO, not gonna happen unless a structural re-design of the rep 3120 is done.

 

[j21]

On the topic of whether swapping the rep date jumper wheel to the GEN part would work, there is a thread here which discussed the matter:

AP 15400 Dandong 3120 super clone movement teardown

The original video is from here: https://www.bilibili.com/video/BV1Hr4y117PA/?from=search&seid=11896973276005077324&spm_id_from=333.337.0.0 I uploaded it to youtube with English subtitle, I find it very interesting, it explained why this super clone doesn't have instant jump calendar

forum.replica-watch.info

@j21 confirmed that it couldn't be done.

Also, the GEN jumper wheel seems to be thicker than the rep date jumper wheel, so I suspect the answer is NO, not gonna happen unless a structural re-design of the rep 3120 is done.

Yes, its already been tried

 

[Siz3n_FB7]

This is amazing comparison. Thanks for your effort

 

[EggsVoL]

have any way to make better Rotor in rep? CNC ?

 

[CTime]

wow this is amazing! thank you! do you have the link to the video? thank you! @CTime

I have linked the video in the post, please take a look

 

[CTime]

have any way to make better Rotor in rep? CNC ?

We can only wait for them see if they will update to CNC in the future