Power type Steam Total produced 466 UIC class 1'D1' | Build date 1913–1936 | |
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Gauge 4 ft 8 ⁄2 in (1,435 mm) | ||
Canadian National Railway (CN) Class S locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or " 1'D1' " in UIC classification. These locomotives were designed for 16° operating curvature. The first examples of this very successful class were built for the Grand Trunk Railway in 1913. Major purchases of the class continued through 1924. Sub-classes S-3 and S-4 employed higher pressure boilers with smaller diameter cylinders to achieve similar tractive effort with higher efficiency. The class remained in freight service until the final replacement of steam with diesel-electric locomotives. Twenty-one were renumbered between 4045 and 4097 in 1956.
Preservation
Number 3239 was preserved by the Canadian Railway Historical Association. Number 3254 by W.F. Barron of Ashland, Pennsylvania. #3254 is the only operational of the surviving S Class 2-8-2s, finding its home on the rails of Steamtown in Scranton, PA. Number 3377 by the Edaville Railroad, and number 3734 (renumbered 4070) by the National Museum of Steam Propulsion at Middleville, Michigan.