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By Neverenoughwatches · Posted
Those movements are submitted by anyone as far as i know, folk that helped to build the database for Ranfft. Those 4 pictures show 2 different variations or possibly families of caliber. Notice the two different bridges. But the set and wind are the same design, the spring is the click spring, these are common on oris movements. So that spring and screw on the last picture is missing as i think so is yours sorry. -
Hello! Could anyone help me figure out the part number for a blue sapphire crown for the Tank Francaise ref: W51002Q3. Perhaps even a place where I can find one, used or new. Thanks in advance!
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Fine work. I see what you were going for😀…. …sorry- early in the states. How dies the pull on the crown feel? This is not in my skill set yet- I always wonder if the new material will be too stiff…
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That looks like normal behavior to me. That movement only winds in one direction, not both, so when the rotor turns anti-clockwise it winds the main spring and so is fighting against the mainspring tension. As a result it will turn under its own weight but it won't free spin. When it turns clockwise though it has no resistance and so can spin freely.
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That's brilliant! What a great set of books they are! Thanks for that. Another quick question. I've noticed on the second picture of the movement on the data sheet there is some sort of spring held down with a screw towards the bottom left. However in the fourth pic the spring isn't there. My movement doesn't have that spring or screw. Are those pics fully assembled and just different types or is it missing?
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