Too much amplitude - best (easy) way to stop rebanking ?
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Success! The watch is working, albeit not perfectly. I need to install a new mainspring. It only runs about 16 hours. Still, it's my first cleaning and rebuild. I bought it from the original owner's son on eBay! The other one was bought at a flea market. I needed both to complete the project. The model with a seconds hand had soldered watch band pins and I couldn't drill tiny holes so I used the flea market Waldan, which was nearly a perfect match. I also replated the case with nickel, but the result was subpar. It's never as easy as it looks.
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Thanks guys. It's a Seawolf 10ATM pre spring bezel. The case knife stressed me a bit, but eventually got it off and cleaned - nearly seventy years of grime. Thanks. Cheers John
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Exactly. This is a pic of the hairspring I'm working on. My horizontal v vertical rates are all over the place. There is no discernible terminal curve. My problem is that the outer coil is (possibly) hitting the regulator pin. It's hard to tell but it looks to be getting very close. Also getting close to the stud, which could be @VWatchie's problem. You can see that I need to adjust the inner coil to centre the collet. That will hopefully solve the problem. But then I'll take the spring off and attach it to the cock to see how it looks. I don't know if it's causing your problem @VWatchie, but I would say your inner coil looks like this
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@SargentColon according to the Seitz book the id run from 8-32 hundreds of a mm, so not all would possibly be needed however there were more manufacturers of jewels than Seitz. I’m sure the professionals here would know more than me. This may help Tom Seitz book 3.pdf
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