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STP 1-11 and ETA 2824 parts compatibility question

millette.sebasti
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millette.sebasti Member

millette.sebasti

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Hi,

 

I have a Zodiac Sea Wolf (new release) powered by a STP 1-11 movement. Watch runs great but I had a small incident while setting the time (slipped from my hands and fell on the countertop about 4-6 inches below ). Watch still ran fine but the stem was bent a little.

 

Before it broke while operating it, I decided to remove it from the movement; it was partially broken and snapped in two in my hands once removed.

 

I took precautions to remove it like a ETA 2824 stem (position #3-time setting mode). However, I have an uncut 2824 stem here in my spare parts and tried to insert it inside the watch movement to repair it myself. It did fit nicely and I was able to handwind the watch, change the date and set the time, but the watch stays in "hacked mode" and the balance wheel won't run.

 

I did take it to my watch guy this morning so he can have a look (it was his first STP 1-11 he ever saw). He'll order the right parts for it and fix it.

 

I wonder what could be the reason for the watch to stop running after the stem was removed and reinserted (2824 stem looked like a perfect fit when looked at with magnification compared to the STP 1-11)? It still ran good after the small drop. I just hope I did not mess up the keyless works with my small experiment...

 

I'll keep you informed of the outcome.

 

Thanks for your help!

 

Seb

 

Envoyé de mon Nexus 5X en utilisant Tapatalk

 

Envoyé de mon Nexus 5X en utilisant Tapatalk

 

 

jdm Distinguished Member

jdm

Posted
Posted

As mentioned, the STP 1-11 is a new movement, so no surprise there's no much information about it. I vaguely recall to have read that they re-used an ETA balance complete. The manufacturer may not even be organized to provide spare parts. 

Danh WRT Addict

Danh

Posted
Posted (edited)

When you look at the STP it is virtually a clone of the ETA as can be seen on the tech drawing

 

 

STP1-11_Technical_Package_complete.pdf

there could be subtle size differences though, I would look at the stop lever though as it could have slipped

Edited by Danh
millette.sebasti Member

millette.sebasti

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Hi,

 

Some news.

 

Watch is still with my watch guy.

 

He checked under a loupe a 2824 stem as a replacement for the STP one. Even if they look similar, he still preferred to order a real STP one.

 

As I expected, he has no parts in hand for this movement and will need to order everything, making a rather routine repair job a 2-3 week thing!

 

Thanks!

 

Seb

 

Envoyé de mon Nexus 5X en utilisant Tapatalk

 

 

 

 

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  • 4 weeks later...
millette.sebasti Member

millette.sebasti

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Hi,

Just a quick update.

The watch was ready last week; stem was changed and keyless works resetted. Cost, 60$ CAD, pretty good for me. Even took a bit of time to regulate it for me, the watch runs an amazing +1s/day after a week.

Everything feels nice and smooth when operating the crown but when adjusting the time, there is a slight "loose" feeling where the hands don't move instantly when turning the crown, maybe 0.5mm of play. I'm okay with this since I might have damaged something when it broke on me and no extra parts were changed.

Cheers,

Seb

Envoyé de mon Nexus 5X en utilisant Tapatalk

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