Mainspring Questions - NAWCC Forums 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 winder sizing. - NAWCC Forums Hi I am new to pocket watch workings etc I have a watch that has a broken mainspring I have managed to get the correct spring However I need to replace the barrel also I would like to purchase a mainspring winder The watch is a waltham size 16 The case of the mainspring measures dia 19 4mm The spigot ? 2 25 dia
vintage watch mainspring questions - NAWCC Forums 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
400-day clocks - mainspring matters - NAWCC Forums With a below-par mainspring, any tiny increase in resistance from a microscopically bent tooth, out-of-round wheel, tight or bent pivot, or even a speck of dirt can absorb whatever surplus torque remains from the spring, and the clock stops, in the same way as the ‘cliff edge’ manner in which a digital transmission system fails
American PW - Mainspring Replacement in Waltham Model 1883 The mainspring will be difficult to move within the barrel after it is free from the shipping ring and it is best to get those T ends as close to the holes as possible before pushing the spring out Also, if they don't line up it is better to have them BEFORE the holes rather than just PAST the holes, as it may just slide forward and engage
how to measure mainspring - NAWCC Forums hello i need to order a new mainspring for my pocket watch h 2 5 thickness 0 3 L 590MM,BUT i am not sure about the diameter of spring barrel, do i measure inside barrel or outside My old spring had a rectangular slot about 3mm x 1 5 which fitted to the arbor,to other end was completely folded over which locked against barrel by small stop,is
Set Mainsprings - NAWCC Forums I've services hundreds of clocks and I've only seen one spring that one might consider set and that was a very old brass mainspring (kept the spring and advised the owner to wind more frequently) The world might be better off the concept of a "set mainspring" were to become regarded as a myth the same as being wound too tight RC
Help with a mainspring winder - NAWCC Forums I am using a mainspring winder for the first time I am working on an Ansonia I have come across two problems that I cannot figure out I have seen several videos on how to use the winder, but none on how to remove the mainspring clamp after the spring has been placed back into position One problem I am having is I cannot fully wind the spring
Help - Clock Repair - Mainsprings disconnected from . . . - NAWCC Forums 2 I have the 5-way keys to wind the mainspring arbors Do they make such a thing for the 0000, 000, etc smaller sizes or do you just have to buy the individual keys below #2? Asking because having a "key" that fits the size of the minute hand arbor would allow turning it without having to use the hand and risk breaking it putting more wear on it
Mainsprings sizings and how to decide which one to have Vespa, I think that the advice that you have been given by both Skutt and Graham is good advice Just to add a wee bit more information to help you determine which mainspring to go for I offer the following link to the NAWCC Horology Index that will, given the inside diameter of the barrel, the outside diameter of the barrel arbor and the thickness of the required spring, calculate the length