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| Joined: | Thu Apr 16th, 2009 |
| Location: | Arctic, Norway |
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Hammerfjord wrote:
stew77 wrote:
Hammerfjord wrote:
Will - you are correct buddy, an Omega 1120 caliber inside (As I'm sure you already know, Omega starts with the base ebauche from one of my favorite ETA movements...the 2892-A2 for the 1120, and makes some significant enhancements to yield the chronometer grade 1120).
Yes Chris, I've been putting my nose in the 1120 and 2500 mvts.
The 1120 is very similar to the 2892-2 but the 2500 a,b,c generation is even more modified and don't have the same size as the 2892-2 at all.
Yes...the coaxial escapement of the 2500 is indeed a different beast (and a nice big step toward what would be considered the perfect design point). From what I understand, with the 1120 calibre, Omega adds two jewels to make it a 23 jewel movement, rhodium plating, and some other modifications (that I'm not too clear on) to improve the durability and precision.
The 2500 has 27 jewels and among other things, a very different regulator on it's balance-wheel who can only be actioned by a special Omega tool.
To conclude: If not affiliated to/authorized by Omega, you can not get the tool and can not regulate the 2500 generation.
This is something to know before even thinking doing any regulation after full service if you are a watchmaker.
Good to know Will. I assume that you haven't had to do anything at all yet with the 2500 calibre that powers your way-cool custom Kazimon 1500. I'm sure that one has been running rock solid for you.
Correction my friend: The special tool or "adjustment key" is used on the 2 screws who are on each side of the balance.
My 2500c i running about 1 sec/day when used everyday: I'm very satisfied from the performances of the factory regulation.