vintage watch mainspring questions - NAWCC Forums
2024年11月7日 · The mainspring seems to be the first culprit when encountering running issues, and, if the correct size*, is rarely the cause. Nivaflex springs have a very small advantage (single digit percent) of modulus of elasticity over steel, and the reverse curve helps a little too, but if a steel spring opens up larger than the movement diameter, going ...
Zenith Clock: Hair Spring or Mainspring Issue? | NAWCC Forums
2024年11月26日 · The length of the mainspring primarily determines how long the clock will run and is usually a function of how much space there is in the spring barrel, It has nothing to do with how fast the clock runs. The thickness of the mainspring primarily determines how much power is delivered to the movement. What is the total rotation of the balance wheel?
Clock Mainspring Chart - NAWCC Forums
2009年4月23日 · Last updated December 30, 2008. Make Cat. No. Size End Description Source; ANSONIA: CML-95.5: 3/8" x .014" x 60" Loop
Mainspring Questions - NAWCC Forums
2024年7月22日 · I am cleaning a ship’s clock that has a mainspring measuring 7/8”w x .015 thick. Not sure I need to replace it as other than being very dirty I was able to give it 3-4 good turns initially. My questions are -other than a spring being broke how does one know when the spring still has enough...
Mainspring Clamp Not Fitting - NAWCC Forums
2024年9月15日 · I zip tied the mainspring and was able to remove the hammer assembly. As I thought, it was not connected to the front or back plates and therefore did not release the mainspring. After cutting the zip tie off, I was somehow able to get the C clamp around the strike side mainspring, at which point I realized per wow's point, the clamp is too large.
Tired/Set Mainspring - NAWCC Forums
2013年10月20日 · No. Because clicks are observable for wear and potential failure. A mainspring isn't detectable as to whether it will fail until it DOES fail. Further, click springs are not in motion for their entire lifespan. These springs are only operating when the clock is being wound. Whereas a mainspring is either winding or unwinding constantly.
Mainspring too small for clamps - NAWCC Forums
2024年11月27日 · These mainsprings are relatively easy to manipulate without going near a mainspring winder. A c clamp or a wire around the mainspring should retain it for dismantling but upon wanting to reinstall, it is better to unclamp it and wind it in with the winding key. ie: you install all the wheels and pallets as well as putting the centre of the mainspring on the great wheel, …
Zip Ties to Mainspring Rings - NAWCC Forums
2024年11月24日 · If you want to continue disassembly, you can probably do what most do when encountering a brand-new mainspring: Wrap the part containing the springs in a thick towel, hold each spring with a leather-gloved hand, then reach in with a wire cutter, and cut the zip tie. Hold on tight, and gradually let the spring unwind itself into the towel.
SET MAINSPRING - Myth or Really Truely POSSIBLE - NAWCC …
2013年1月6日 · Set mainspring is not a myth. A watch itself will be a test instrument for it. You won't get a good balance amplitude with a set mainspring. One can also determine if the mainspring has to be replaced by the the way it looks. Usually, if relaxed mainspring in the barrel has more than two coils around the arbor, it is set.
Mainspring gauge - NAWCC Forums
2009年8月10日 · Later this became known as the "US Standard" gauge. The edges have the usual notches for mainspring heights (based on the Imperial inch, but there is no obvious way to determine mainspring strength, except perhaps by barrel diameter using one of the three scales on the top left (which are Imperial inch scales in 1/64th and 1/32nd divisions).