eterna_1466
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— | eterna_1466 [03.07.2022 15:33] (current) – created - external edit 127.0.0.1 | ||
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+ | ====== Eterna 1466 ====== | ||
+ | [[Eterna]] **Cal. 1466** was one of a family of [[ultra-thin]] [[automatic]] watch movements produced in the 1960' | ||
+ | |||
+ | ===== Overview ===== | ||
+ | [[ETA]] was one of the three firms " | ||
+ | |||
+ | The result was Cal. 1466 and the related family of movements. Measuring just 3.6 mm high, despite a [[central rotor]] winding system, Cal. 1466 made the ultra-thin [[Eterna-Matic 3000]] possible. It was essentially an all-new movement unrelated to the previous [[Eterna 1438|Cal. 1438]] and contemporary [[Eterna 1470|Cal. 1470]]. This family featured a direct seconds drive, a major modernization, | ||
+ | |||
+ | The reduced thickness was due to a number of advancements | ||
+ | |||
+ | * The base plate of the movement was steeply beveled to make it thinner at the edge than at the center, matching the profile of the Eterna-Matic 3000 | ||
+ | * The rotor weight is also stepped so it is thinner at the edge | ||
+ | * All components were placed close together but were kept a practical size for robustness | ||
+ | * The components are arranged around an opening at the center to house the automatic winding mechanism | ||
+ | * The rotor bearing is large and robust, with seven ball bearings rather than the typical five but each reduced in diameter | ||
+ | * The date wheel fits into a recess in the front plate, keeping the thickness the same on date versions | ||
+ | |||
+ | Maintenance is assisted by the design as well. Just three screws are needed to remove the entire self-winding assembly. | ||
+ | |||
+ | The success of this movement made it the template for the future [[ETA 2892]] family, still one of the most highly-regarded automatic watch movements today. | ||
+ | |||
+ | ===== Technical Details ===== | ||
+ | All movements in this family are 3.6 mm thick, including the date models. The day/date Cal. 1457 is 4.15 mm thick. All have 21 jewels and a power reserve of 44 hours. | ||
+ | |||
+ | This movement family includes both 12.5 [[ligne]] and 13 ligne variants. Both are very similar, apart from the base plate size. | ||
+ | |||
+ | Movements were made with " | ||
+ | |||
+ | Cal. 1455, 1456, 1457, 1465, and 1466 operate at 18,000 A/h, while Cal. 1500 and 1501 operate at 21,600 A/h and Cal. 1504 operates at 28,800 A/h. | ||
+ | |||
+ | ===== Variants ===== | ||
+ | Cal. 1466 is the most famous of a family of movements. | ||
+ | |||
+ | * 18,000 A/h, Eterna-U shock protection | ||
+ | * Eterna 1455U - (1962-) 12.5 ligne | ||
+ | * Eterna 1465U - (1962-) date | ||
+ | * Eterna 1456U - (1962-) 13 ligne | ||
+ | * Eterna 1457U - (1962-) day, date | ||
+ | * Eterna 1466U - (1962-) date | ||
+ | * 21,600 A/h, Kif-Ultraflex shock protection | ||
+ | * Eterna 1500K - (1963-1973) 13 ligne, date | ||
+ | * Eterna 1500KB - (1963-1973) no seconds hand | ||
+ | * Eterna 1501K - (1963-1973) day, date | ||
+ | * 28,800 A/h, Kif-Ultraflex shock protection | ||
+ | * Eterna 1504K - (1973-1975) 13 ligne, date | ||
+ | * Eterna 1504KB - (1973-1975) no seconds hand, date | ||
+ | |||
+ | ===== See Also ===== | ||
+ | * [[Eterna-Matic 3000]] | ||
+ | * [[ETA 2892]], the successor movement | ||
+ | |||
+ | |||
+ | {{tag> | ||
eterna_1466.txt · Last modified: 03.07.2022 15:33 by 127.0.0.1