The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches.
Quick Facts Type and origin, Power type ...
Milwaukee Road class A2 |
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Specifications |
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Configuration:
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• Whyte | 4-4-2 |
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• UIC | 2′B1′ v4 |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) |
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Driver dia. | 84–85 in (2,134–2,159 mm) |
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Boiler pressure | 200–220 lbf/in2 (1.38–1.52 MPa) |
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Cylinders | 4 (Vauclain compound) |
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High-pressure cylinder | 15 in × 28 in (381 mm × 711 mm) |
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Low-pressure cylinder | 25 in × 28 in (635 mm × 711 mm) |
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Career |
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Operators | Milwaukee Road |
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Class | A2, A2-a, A2-b, A2-c, A2 |
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Number in class | 47 |
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Scrapped | 1927–1930 |
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Disposition | All scrapped |
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The first two batches of 9 and 19 locomotives (classes A2 and A2-a) were built by Baldwin Locomotive Works, and were Vauclain compound locomotives with 84 inches (2.13 m) drivers. The third batch (A2-b) of five locomotive was built by the Milwaukee Road in its Milwaukee, Wisconsin shops with 85 inches (2.159 m) drivers. The fourth batch (A2-c) of 12 engines was built by Baldwin as Vauclain compounds with 85 inches (2.159 m) drivers, while the last batch (A2) was for a pair of engines built by Baldwin as balanced compounds. All members of the class were scrapped between 1927 and 1930.