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You might read the discussion in this interesting thread: https://www.watchrepairtalk.com/topic/30176-braking-grease-a-myth
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Hi Frank and Thanks for the suggestion, Sorry I may have worded things incorrectly. The ac122 is no good as it only ran for 5min, I am looking for the same germanium transistor that was used on the w726 movement back in the '70s or a modern equivalent as i believe it is the missing link for a working clock again. Do you or anybody else on the forum have some idea as to where I might find such a transistor? ... I see you are in Germany and that is where Junghans originated from so I have my fingers crossed.🫰👍 Cheers AL Cheers Richard ... Thanks Cheers Nucejoe ... Thanks
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By HectorLooi · Posted
If you loosen the screws of the top plate and spin it with the turbo, does it improve? -
So, I said when i used one of these balances I would provide an update. Do they work? Are they legit? I'm still almost 100% confident they are real just based on clearly being from the same tooling but possibly factory seconds likely with minor cosmetic defects. The one in the photo here which has a little hair trapped under the hairspring is the one i used. Did it work? Boy did it... So the 7s26 is not exactly famous for being a high accuracy movement. From the factory a delta of 10 to 20 is not exactly uncommon. I put the balance in and the bone headed design of how seikos stud is made it's almost a guarantee you'll put a slight twist in it when you install it that you have to correct and that's what happened. I corrected the twist and like with all seiko balances had to do a tiny bit of correction on the terminal curve to make sure it perfectly tracked the open regulator pins and stayed centered. I then closed them up and did my final timing and adjustment. On a 7s26C with the balance from sofly i got a six position delta of ONLY FIVE SECONDS. Which is a tie for the smallest delta i've gotten on one of these movements. It's been in a 7s26 on my wrist now for 8 days and has lost three seconds. Not PER day, 3 seconds in 8 days total. Based on my experience now i'm confident enough to buy these and I will likely order some more very soon.
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Just my rotary tool with a muslin buffing wheel and some green Dialux.
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