Buying a new winder assembly or a new rotor seems like the easiest option
Easier said than done with these cal. 505 chronometer rotors. They simply do not exist as replacement parts.
However, I have never seen nor heard of someone replacing the center gear on one. A specialist watchmaker might be able to do it, but will not be cheap.
gatorcpa
What is the caliber you are trying to repair?
If you go to Cousisns UK document section, you'll find part lists for many Omega calibers.
Go to the 505 list and see what base caliber parts are the same, there will be some at the start that are different to the base caliber (500).
Then work down to 504 etc etc.
As Al noted, 500 parts are getting rare but are still around.
I think it would be easier to have an appropriate watchmaker do it.
R rshroffMany thanks. I believe the rotor shown on the right (17 JEWELS ADJUSTED) is from a calibre 500. The 17 jewel rotor fits perfectly on my 505 movement but for some reason the bushing is not the same size as the 505 24 Jewel rotor. Does that make any sense?
It’s routine work...as shown in the linked thread. The 500 series pinions are discontinued, but you can find them on the open market.
The 550 series are all available from Omega still.
Do you happen to know the part number for the pinion. Omega has always told us we can only purchase the rotor with the pinion attached as a single unit.
