Great resource with Omega Movement drawings (321, 861, etc.)

Aludic · Feb 12, 2020

Hi all,

Whilst previously discussed in 2014 (https://omegaforums.net/threads/cool-speedy-info-reference-site.19371/), I just happened to stumble upon the speedywatch.com website after searching Google for Omega Movement drawings.

Turns out this site has many of them. Geeky, interesting and IMHO an absolutely great resource for more detailed Omega movement information. I thought it was worth sharing, so here you go: http://www.speedywatches.com/documents/movements/

Hope this is useful and interesting to others too!

Cheers,

Radiozoop · Feb 12, 2020

This website is great, what a wealth of information. Definitely useful when my 321 comes up for service... I really don't want to resort to sending it out to Omega out of fear they'll ruin the "patina," so maybe with info like this my watchmaker can make it happen.

Thanks for sharing!

Aludic · Feb 13, 2020

Hi @Radiozoop

Glad you like it. I think any skilled watchmaker probably knows these movements as they are fairly common, so I wouldn't worry about that too much. Still, I thought is an interesting set of drawings for non-watchmaking enthusiasts. 😀

DaveK · Feb 13, 2020

Radiozoop
This website is great, what a wealth of information. Definitely useful when my 321 comes up for service... I really don't want to resort to sending it out to Omega out of fear they'll ruin the "patina," so maybe with info like this my watchmaker can make it happen.

Thanks for sharing!

I have some old biology books if your surgeon needs them 😉

Maganator · Feb 13, 2020

That's a good site for speedys.

I was looking for information about the cal 265, 266, 267 n& 268 movements recently and couldn't find much.

This seems to have a decent amount of information on some of the older Omega movements

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Omega_268

southtexas · Dec 26, 2024

Hello all, reviving an old thread. Does a schematic exist showing the other side of a 321 movement with more part numbers? I'm trying to determine exactly where part 321-1758A belongs in a 321 movement. My watchmaker called it a Zero Action Pusher Stem. Here are pics of the part. My movement is a 17mil serial. Thanks in advance.

Omega Part 321.1758A zero action pusher stem (back) .webp

Omega Part 321.1758A zero action pusher stem (front) .webp

Archer · Dec 27, 2024

It’s the pusher stem for zero action. It goes sort of between the movement and the pusher. That version is likely for a Seamaster case, as the Speedmaster versions are a different design.

southtexas · Dec 27, 2024

Archer
It’s the pusher stem for zero action. It goes sort of between the movement and the pusher. That version is likely for a Seamaster case, as the Speedmaster versions are a different design.

thank you. Is it a "push to fit" part, or is it held in by another part/screw? In short, if I'm fairly comfortable dabbling with these parts and have the necessary tools, should I give it a try, or is it something a watchmaker needs to handle? Thanks again for your insight.

Archer · Dec 28, 2024

The slot in the part you see mates with the hour hammer operating lever, so installing this requires that the movement is removed from the case.

southtexas · Dec 28, 2024

It is a loose movement and the part was noticed floating in the plastic case.

Archer · Dec 28, 2024

This to me would indicate that the movement is from a Seamaster. If you are using it for a Speedmaster, you will need the other design.

southtexas · Dec 30, 2024

Archer
This to me would indicate that the movement is from a Seamaster. If you are using it for a Speedmaster, you will need the other design.

Sorry for any confusion I may have caused. As I’ve mentioned, I'm not attempting to install the movement into a seamaster or speedmaster, I'm simply trying to put the loose part back into the loose movement. I thought I might give it a try myself, hence my question.

Archer · Dec 30, 2024

southtexas
Sorry for any confusion I may have caused. As I’ve mentioned, I'm not attempting to install the movement into a seamaster or speedmaster, I'm simply trying to put the loose part back into the loose movement. I thought I might give it a try myself, hence my question.

It really only stays in place properly when the whole watch is assembled…