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By watchweasol · Posted
Hi you can get parts/ tech sheets from cousins uk on therir down lost page, also print rest has some scattered about, cas ker, Esslingers, my retro watches, watch guy there is a few to trawl -
By spectre6000 · Posted
I only buy mechanical personally, as it's all that interests me. There are a few electronic movements I find interesting, but they're not the sort I tend to see very often at all, and wouldn't come up in any of my searches. I have been given a few quartz watches over the years, but they all just sit in a bag in a drawer. Once I hit some critical mass, I'll hopefully get enough motivation to either sell or donate them. -
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Welcome to the forum. I was just in London this past weekend... great weather. I hope you also enjoyed it. -
I'm surprised you say that. I'd say that IF (!!) barrel diameter, beat rate and all other things are equal, the length is directly correlated with the power reserve. A random/quick google search found me this quote from Longines "The length of the mainspring directly correlates with the amount of power reserve a watch has. The longer the spring, the longer the power reserve or also the reduction of the vibration, i.e. from 28’800 A/h to 25’200 A/h. (less vibration, less energy needed)." (https://www.longines.com/en-za/universe/blog/what-is-power-reserve-on-a-watch) A few anecdotal experience on my side would also lead to that conclusion. Then, of course, it depends what you mean by "verry small". In the particular case with an original MS of 300mm, going to 280mm, I'd expect losing maybe 2h of power reserve. Just a "guesstimate".
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