page_title: Canadian National class S 2-8-2
hierarchical_section_title: Canadian National class S 2-8-2
caption_attribution_description: English: Photo of Canadian National steam engine #3254 pulling two passenger cars at Steamtown National Historic Site in Scranton, Pennsylvania, August 2005. Background buildings are (l to r) locomotive repair shops, 1902/1937 roundhouse section, and museum.
context_page_description: Canadian National Railway Class S locomotives were a Class 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. 53 were renumbered between 4045 and 4097 in 1956.
context_section_description: Canadian National Railway (CN) Class S locomotives were a Class 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. 53 were renumbered between 4045 and 4097 in 1956.
caption: CN 3254, an example of a preserved S class locomotive
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