Classic Streamliners - TRAINCYCLOPEDIA
Photo of Southern Pacific MC-6 class cab forward mallet locomotive No. 4030.
Southern Pacific Class MC-6 Mallet Consolidation Cab Forward Locomotive
Southern Pacific Company's MC-6 class of steam locomotives is made up of two batches: the first consisting of 15 locomotives weighing 435,800 lbs and built in 1912, the second consisting of 5 locomotives weighing 437,100 lbs and built in 1913. All of the locomotives were built by Baldwin Locomotive Works. This was the last class of 2-8-8-2 locomotives that Southern Pacific (SP) ordered as cab forward locomotives.
Locomotive number 4043, the newest of the early class of MC-6 locomotives, was displayed at the Panama-Pacific International Exposition along with SP's first locomotive, C. P. Huntington.
All but three of the locomotives in this class were rebuilt as the AC-3 class with modified (compound to simple) uniform cylinders of 22 in × 30 in (559 mm × 762 mm) by 1930. The last three were thus rebuilt in 1937. During the rebuild, 4¼-BL Worthington feedwater heaters were also installed on the fireman's side of the locomotives.
After their rebuilds, the locomotives were used through the end of World War II with the last one scrapped on August 20, 1949.
Southern Pacific Class MC-6 Overview
Type and origin
Power type: Steam
Builder: Baldwin Locomotive Works
Serial numbers: 38523–38534, 38711–38713, 39673, 39731, 39857, 39858, 39874
Build date s:October–December 1912 and April–May 1913
Total produced: 20
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Text: wikipedia.org. Images: Public Domain; http://www.commons.wikimedia.org (unless otherwise specified) and 17 U.S. Code § 107 fair use. References: Lewis, Robert G. The Handbook of American Railroads. New York: Simmons-Boardman Publishing Corporation, 1951, 2nd Edition 1956. Site Map Contact webmaster HERE.