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Max
·Did anyone know wherer to find the informations about this movement? Is the cal. 2500 Co-axial escapement design and produces by Omega? Please.
cal. 2500 Co-axial escapement
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dsio
··Ash @ ΩFThe Cal 2500 is an ETA base movement (I believe a 2892-A2) that has been modified by Omega, initially it was the Omega Cal 1120 which was a lightly decorated version of the ETA movement, but the Cal 2500 was a rather serious modification of the base ETA movement to incorporate the Daniels co-axial escapement, I believe it was still produced primarily by ETA even though it was unique to Omega, however it isn't what you would call an in-house design.
The new Cal 8500 was designed from the ground up as a whole new movement around the co-axial escapement, and is a truly unique Omega movement, and can be considered in-house in every way that matters.
The new Cal 8500 was designed from the ground up as a whole new movement around the co-axial escapement, and is a truly unique Omega movement, and can be considered in-house in every way that matters.
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Max
·I think you are right! Do you have some more information about the 1120 used as the ETA 2892-A2?
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ulackfocus
·I think you are right! Do you have some more information about the 1120 used as the ETA 2892-A2?
A few jewels are added, the bridge for the automatic winding system is replaced, and the rotor is shaped to resemble the classic full rotor calibers of the 50's and 60's.
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alam
·
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dsio
··Ash @ ΩFThe Cal 2500 is an excellent movement, because the Cal 1120 is an excellent movement, and the Cal 1120 is an excellent movement because the ETA 2892-A2 is an excellent movement. Basically you're talking a very common movement here, but Omega takes the top specification ETA base "Chronometer spec) which is a movement that will keep accuracy between -4 and +6 seconds per day as it is, they decorate it, and make some very minor changes as Dennis mentioned above to turn it into a Cal 1120, they then add the co-axial escapement to that to make it the Cal 2500, which is a more dramatic change, and arguably a good one, the Co-Axial escapement gives very good positional accuracy (not that its particularly noticeable on a 28,800 vhp watch anyway) and is a unique modification to Omega.
Basically think of it like this, the Toyota 3.5 V6 2GR Engine
The 2GR Toyota engine is used in the Camry among other things, and its a great engine because its reliable, and a great performer.
That same Toyota engine is decorated, modified slightly and used in the Lexus ES350 / RX350, same motor with very slight changes but its still excellent.
Then in the Lotus Evora, that engine is further modified, still the same motor though, and its excellent in the Lotus as well, because it has such strong underpinnings.
Basically think of it like this, the Toyota 3.5 V6 2GR Engine
The 2GR Toyota engine is used in the Camry among other things, and its a great engine because its reliable, and a great performer.
That same Toyota engine is decorated, modified slightly and used in the Lexus ES350 / RX350, same motor with very slight changes but its still excellent.
Then in the Lotus Evora, that engine is further modified, still the same motor though, and its excellent in the Lotus as well, because it has such strong underpinnings.
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N2FHL
·The Cal 2500 is an excellent movement, because the Cal 1120 is an excellent movement, and the Cal 1120 is an excellent movement because the ETA 2892-A2 is an excellent movement. Basically you're talking a very common movement here, but Omega takes the top specification ETA base "Chronometer spec) which is a movement that will keep accuracy between -4 and +6 seconds per day as it is, they decorate it, and make some very minor changes as Dennis mentioned above to turn it into a Cal 1120, they then add the co-axial escapement to that to make it the Cal 2500, which is a more dramatic change, and arguably a good one, the Co-Axial escapement gives very good positional accuracy (not that its particularly noticeable on a 28,800 vhp watch anyway) and is a unique modification to Omega.
Once Omega made the decision to go with the coax, they were anxious to get it to market. So they pulled the balance wheel and escapement out of their 1120 and stuffed the coaxial parts in. And it didn't work well at 28,000. So they slowed it down. Still didn't work well.
The bottom line is that they finally seem to have figured it out on the third try. So if you're in the market for one look for the 2500C. The cal 8500 doesn't seem to have suffered the same fate and appears to be an accurate, reliable movement.
Steve
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The GMT Master
·Well, not really. The only real difference between a base model 2892 and the chronometer is the decoration and the balance wheel- which got removed to make room for the coaxial one.
Once Omega made the decision to go with the coax, they were anxious to get it to market. So they pulled the balance wheel and escapement out of their 1120 and stuffed the coaxial parts in. And it didn't work well at 28,000. So they slowed it down. Still didn't work well.
The bottom line is that they finally seem to have figured it out on the third try. So if you're in the market for one look for the 2500C. The cal 8500 doesn't seem to have suffered the same fate and appears to be an accurate, reliable movement.
Steve
Agreed, the 2500C was when Omega really got it sussed! They've recently introduced the D variant, which uses the more efficient 3-level Co-Axial escapement, as opposed to the 2-level in the 2500 A-C 👍
