Quote:
Originally Posted by MikeNoun
Internals of the 1967-1969 cocktail shaker. Weight is 22.5 pounds each, so that's an extra 45 lbs in back, 45 lbs. in front. The center piece is cast iron and very heavy.
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Thank you; it looks like a simple spring/mass system, probably tuned to a specific natural frequency with the spring force supplemented by the internal fluid.
K
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