Oris 704 Movement

[JAC]

Hello all

I have just joined this forum and introduced myself.

A little while ago I pulled down an Oris 704 and cleaned it.  Just as I was putting the mainspring in, it broke!  Noooo.  I was a little, um annoyed.

Anyway, new mainspring ordered from Cousins, and 1 month later mainspring installed.  Movement reassembled and oiled, and was ticking away nicely.

Just about to fit it to the case, when I thought I'd put it on the timegrapher and regulate.

Then (the unthinkable), screwdriver slipped, and yes, straight into the hairspring.  Arrrrgh.

So, with all that said, I am wondering if anyone has a complete balance assembly for an Oris 704 movement for sale.  Balance with hairspring will also suffice.

I am happy to purchase a complete movement/watch as well.

 

John.

[Nucejoe]

I have never seen spare 704kif complete balance made and marketted.

Oris 704 kif is based on 701 and 702 so that is what you need to be looking for which is often available at material houses.

Oris made every part except the jewels and used hairspring of same CGS on many of its calibers, that is hairspring used on  701, 702 and  704 have same cgs as 671,672,677 and 678.

Good luck

[JAC]

Thank you for your quick and detailed response.  Really appreciate it.

Does that mean that I may able to buy a 701 and/or 702 as complete balance assemblies.

Sorry for the novice question, but what is CGS? 

Thank you again.

 

John.

[Nucejoe]

Yes, you want  oris 701 ,702 kif complete balance.

Cousines had one for 13 bucks.

[Nucejoe]

CGS stands for   Centimeter,   Gram,    Second.

CGS is a metric  system of units.  adapted in horology to express the torque or the strength of a spring in terms of. 

 

 

[JohnR725]

in some ways it's irrelevant to know what the hairspring is because the hairspring comes attached to the balance wheel. Yes you can take it off but you cannot swap it between balance wheels because each hairspring is vibrated to that balance wheel.

Then I'm attaching the tech sheet didn't see the base caliber as everyone is indicated is 701.

2436_Oris 701,702,704,705.pdf

[Nucejoe]

On 6/17/2020 at 11:08 PM, JohnR725 said:

in some ways it's irrelevant to know what the hairspring is because the hairspring comes attached to the balance wheel. Yes you can take it off but you cannot swap it between balance wheels because each hairspring is vibrated to that balance wheel.

Then I'm attaching the tech sheet didn't see the base caliber as everyone is indicated is 701.

2436_Oris 701,702,704,705.pdf 2.77 MB · 0 downloads

677 balance is heavier than 704 , both beat the same, have hairsprings of same CGS , so hairspring off of a 677 is compatible with 704 balance.

Both 677 and  704 are calender pointers, rare and hard to find parts for. I was surprised that causins claimed to have one or two.

Considering all above, if one is to works on Oris he would need to master vibrating and building a  balance complete.

Thinking a balance complete would be available and with hairsprings attach is a wrong assumption. Causines had one SEVERAL MONTHS AGO. 

OP needs lot of luck to find one in material houses. Otherwise it is what you are ruling out here.

Regards