USRA_Heavy_Mikado

USRA Heavy Mikado

USRA Heavy Mikado

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The USRA Heavy Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration (USRA), the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification. A total of 233 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design, which was built to the total of 957 locomotives including the USRA originals and all subsequent copies.[2]

Quick Facts Type and origin, Power type ...
General arrangement drawing.

Heavy Mikado used the same running gear as the USRA Light Mikado but were built to a higher axle load, larger cylinders and a much larger boiler for more power and steam-generating ability. Many aspects of the PRR L1s class were carried over to the Heavy Mikado, although not that locomotive's distinctive Belpaire firebox.[1]

Original owners

USRA originals

More information Railroad, Quantity ...

Copies[1]

More information Railroad, Quantity ...

None of the originals built under USRA auspices or any of the subsequent copies were preserved.

References

  1. [1]
    Westcott (1960).
  2. [2]
    Huddleston (2002).
  3. [3]
    "USRA locomotives". Steamlocomotive.com. Retrieved 2009-02-22.
  4. [4]
    Drury pp.74, 76
  5. [5]
    Drury pp.101, 106
  6. [6]
    Drury pp.136, 138
  7. [7]
    Drury pp.116, 122
  8. [8]
    Drury pp. 95, 98
  9. [9]
    Keyes & Middleton p.102
  10. [10]
    Drury p.430
  11. [11]
    Drury pp.172, 180
  12. [12]
    Drury pp.277, 230
  13. [13]
    Drury pp. 268, 278
  14. [14]
    Drury p.287
  15. [15]
    Drury pp.248–249, 254
  16. [16]
    Drury pp.342, 345
  17. [17]
    Drury pp.369, 372–373
  18. [18]
    Drury p.30
  • Drury, George H. (1993), Guide to North American Steam Locomotives, Waukesha, Wisconsin: Kalmbach Publishing Company, ISBN 0-89024-206-2, LCCN 93041472
  • Huddleston, Eugene L. (2002). Uncle Sam's Locomotives: The USRA and the Nation's Railroads. Bloomington, Indiana: Indiana University Press. ISBN 0-253-34086-1.
  • Keyes, Norman C Jr; Middleton, Kenneth R (Autumn 1980). "The Great Northern Railway Company: All-Time Locomotive Roster 1861–1970". Railroad History (143). Boston, MA: The Railway and Locomotive Historical Society, Inc. ISSN 0090-7847.
  • Westcott, Linn H. (1960). Model Railroader Cyclopedia, Volume 1: Steam Locomotives. Milwaukee, Wisconsin: Kalmbach Publishing Co. ISBN 0-89024-001-9.
  • "Clearance and Weight Diagrams for Standard Locomotives". Railway Age. 65 (17): 745–746. October 25, 1918 – via Archive.org.Open access icon
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