New Technology Back Opener -- Jack-In-The-Box Style
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By Neverenoughwatches · Posted
🤔 so how is this relevant to the crystal coming out. I've never heard of a crystal that comes out through the back. ? -
By Neverenoughwatches · Posted
Very kind of you chief, the problem is the roller table and knowing if it will interact with the fork. Another roller for this calibre is what i probably need the most. It will have to sit for now while I'm away on holiday for a week. Its an interesting little piece with the cardboard dial which i still haven't got to the bottom of yet. Curious as the OP said his 554 was marked Invicta and this made up dial is also branded Invicta. -
By Neverenoughwatches · Posted
Looking at Nev's graph the thinner longer spring is delivering less torque but over a longer period of time. For this to happen and completely unwind itself increasing the power reserve the friction through the train must be less than if a specified spring were fitted. -
Ok. Update. Checked under a microscope, there is no lip, it just looks like one. So, I'm convinced I need to back the ring out. I'll need to make a tool of some sort. -
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@nevenbekriev That's a very nice overview. As I said, right? I don't think anyone is suggesting that here, @Neverenoughwatches. If anything, the opposite (taking a weaker but longer mainspring than the originally specified one).
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