Milwaukee Road class A2

Milwaukee Road class A2
Type and origin Power type Steam Builder Baldwin Locomotive Works Build date 1901–1909
Specifications Configuration: ​ •Whyte 4-4-2 •UIC 2′B1′ v4 Gauge 4 ft8+1⁄2in(1,435 mm) Driverdia. 84–85 in (2,134–2,159 mm) Boiler pressure 200–220 lbf/in2(1.38–1.52 MPa) Cylinders 4 (Vauclain compound) High-pressure cylinder 15 in × 28 in (381 mm × 711 mm) Low-pressure cylinder 25 in × 28 in (635 mm × 711 mm)
Performance figures Tractive effort 20,420–22,190 lbf (90.83–98.71 kN)
Career Operators Milwaukee Road Class A2, A2-a, A2-b, A2-c, A2 Number in class 47 Scrapped 1927–1930 Disposition All scrapped

TheMilwaukee Road's A2 classcomprised 47compoundsteam locomotivesof the4-4-2or 'Atlantic' configuration. TheMilwaukee Roadacquired them in five batches.

The first two batches of 9 and 19 locomotives (classes A2 and A2-a) were built byBaldwin Locomotive Works,and wereVauclain compoundlocomotives with 84 inches (2.13 m) drivers. The third batch (A2-b) of five locomotive was built by the Milwaukee Road in itsMilwaukee, Wisconsinshops 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.

References

• Edson, William D. (Spring 1977). "Milwaukee Road Locomotives".Railroad History.136(136). Boston, Mass.: Railway and Locomotive Historical Society: 28–129.JSTOR43523968.