ALCO RSD-7 Diesel Locomotive
The ALCO RSD-7 was a diesel-electric locomotive of the road switcher type built by ALCO at Schenectady, New York between January 1954 and April 1956. Two versions were built, with the same RSD-7 model designation but different specifications and power ratings, although both used the ALCO 244 engine in V16 configuration. Specification DL-600, of which only two were built, developed 2,250 hp (1,678 kW; 2,281 PS) and used the 244G engine. The revised specification DL-600A, numbering 27 locomotives, was rated at 2,400 hp (1,790 kW; 2,433 PS) and used the 244H engine. The RSD-7 was superseded by the ALCO 251-engined ALCO RSD-15, which looks very similar. The RSD-7 was the last ALCO diesel built with a 244 engine.
Both rode on a pair of three-axle trucks with all three axles on each truck powered; this is a C-C wheel arrangement. These trucks have an unequal axle spacing due to traction motor positioning; the outer two axles on each truck are closer together than the inner two. The RSD-7 used the GE 752 traction motor. The six-motor design allowed better tractive effort at lower speeds.
Alco (Demonstrator Units)
Atchison Topeka & Santa Fe
Chesapeake & Ohio
Total Units: 29
ALCO RSD-7 Overview
Type and origin
Power type: Diesel-electric
Total produced: 29
• AAR C-C
• UIC Co′Co′
Gauge: 4 ft 8 1⁄2 in (1,435 mm)
Prime mover: ALCO 244
Power output DL-600: 2,250 hp (1,678 kW; 2,281 PS)
Power output DL-600A: 2,400 hp (1,790 kW; 2,433 PS)
Classic Streamliners - TRAINCYCLOPEDIA
The nation's newest diesel locomotive, the DL600, has been introduced by the American Locomotive Company, builders in 1924 of the country's first successful diesel. So advanced is the DL-600 over earlier models that two of the new units can replace three freight locomotives in normal service. The new locomotive has already proved its versatility in highly successful demonstrations on the Delaware & Hudson, New York Central, and Western Maryland Railroads. American Locomotive Company Public Relations Department, March 1, 1954.
Purchases through our Merchant Links and Store help to defray the costs of operating the non-profit Classic Streamliners website, and at no additional cost to you. All of the staff at Classic Streamliners are unpaid volunteers who have all devoted thousands of hours of their own time to bring the site into fruition. We would like to sincerely thank all those who have already helped support this worthy cause. For more information click HERE.
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.