I suppose once I understood the theory of differences possible I would then dive into families of movements (500-series constellations [and non-chronometer movements] being a logical starting point). Who knows, maybe I need to dive into a specific comparison to understand the theory.
A specific example would be the 501 and 471 movements - my understanding based on Maddox’s blog is that the movements are identical except the regulator, with the 501 having a swan-neck regulator. What’s the advantage? Because the regulator is under constant tension with the set screw and the swan neck it prevents accidental movement due to shocks/bumps?
What about the 551 and 505 movements? They are both non-date complications that are 24 jewel, chronometer movements. Having gone back and re-read parts 2 and 3 on Desmond's blog, I suppose much of the information I am after is actually there. Click wear and the double-reverser are just tough concepts to visualize using the static images in the write-up and I'm not sure I fully understand what he is trying to communicate. Things like changes in the pallet fork material are simple to understand. Maybe as I become more familiar with the design terminology these pieces will fall into place and the questions will answer themselves.
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