Zodiac 75B help

[Duvidsson]

Hi

My first post here !,

this forum is amazing alot of great information and help so thanks to everybody!

I have a Zodiac GMT caliber 75B and i need parts because some parts are broke,

it is difficult and rare to find this movement complete or parts.

My question is : can i fit parts from other Zodiac Calibers like 70-75 ?

i know the balace is different, but will parts like mainspring or barrel will fit?

 

Thank you !

[Nucejoe]

Check, 

www.julesborel.com, the data base list AS1649 interchangeable with Zodiac 75B.

Regards Joe

Edited September 4, 2020 by Nucejoe
parts that is

[HSL]

There are lots of parts that is interchangeable between watches.
One just need to know if it is an original design or a movement made out of a base movement.
Since it is a GMT the minute bridge would be modified a bit to give a 24 hour wheel the correct function but apart from that obvious difference there might be parts which are the same.
When we look at for example the barrel and cover on the Zodiac 75B one can see the movement is based on the AS 1649 among others and there for can share this part.

Since these movements are like a mix of a couple of manufacturers ideas one also can see which others share this part. The Zodiac 70 and others seems to share the same barrel.

If the barrel has the same size and are interchangeable then one can assume the mainspring also is the same since it has to fit into the same physical space.
So some parts is the same and others vary one just have to investigate a bit.

[Duvidsson]

wow amazing information thank you very much the your help!

[Nucejoe]

1 hour ago, Duvidsson said:

Hi

My first post here !,

this forum is amazing alot of great information and help so thanks to everybody!

I have a Zodiac GMT caliber 75B and i need parts because some parts are broke,

it is difficult and rare to find this movement complete or parts.

My question is : can i fit parts from other Zodiac Calibers like 70-75 ?

i know the balace is different, but will parts like mainspring or barrel will fit?

 

Thank you !

Where did you get the notion that balance are different.

[Duvidsson]

i was comparing photos with all the different calibers, also in this site with all the various Zodiac GMT's

https://thespringbar.com/blogs/guides/the-zodiac-aerospace-gmt/

 

the regulator seem different.

[Nucejoe]

5 hours ago, Duvidsson said:

i was comparing photos with all the different calibers, also in this site with all the various Zodiac GMT's

https://thespringbar.com/blogs/guides/the-zodiac-aerospace-gmt/

 

the regulator seem different.

 Yes, a micro-regulator is added on high grade oscilators for finer regulation, the diference is in grades of oscilator ..etc, not staff geometry nor the beat it produces. So a balance complete of the base caliber AS1649 would fit right in your watch  so do other interchangable parts most of which is listed on julesborel.

AS 1649 might have been manufactured in different grades namely  elabore, top grade...and for different shock protection systems like incab, kif. or different pivot diameters like 10.5 linge and 11.5 linge, but caliber of all are same AS 1649.

[Duvidsson]

7 minutes ago, Nucejoe said:

 Yes, a micro-regulator is added on high grade oscilators for finer regulation, the diference is in grades of oscilator ..etc, not staff geometry nor the beat it produces. So a balance complete of the base caliber AS1649 would fit right in your watch  so do other interchangable parts most of which is listed on julesborel.

AS 1649 might have been manufactured in different grades namely  elabore, top grade...and for different shock protection systems like incab, kif. or different pivot diameters like 10.5 linge and 11.5 linge, but caliber of all are same AS 1649.

yeah after exploring and going through the list i agree with you.

Thank you!