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The nickname Mastodon is often mistakenly used to describe the 4-8-0 wheel arrangement and was derived from the unofficial name of the first 4-8-0 locomotive of the Central Pacific Railroad in the United States, the wood-fired CPR no. 229, which was designed and built in 1882 by the railroad's master mechanic, Andrew Jackson (A.J.) Stevens, at ...
No. 475 is the 101st member of 125 M class steam locomotives built for N&W in 1906–07, rolling out of the Baldwin Locomotive Works in June 1906 at a cost of $15,179.90. [2][3][4] It was originally equipped with Stephenson valve gear and a 6-A type tender, which holds 10 short tons (9,100 kg; 20,000 lb) of coal and 6,000 US gallons (23,000 L ...
Norfolk and Western 433 is a preserved class M 4-8-0 "Mastodon" type steam locomotive built by the American Locomotive Company 's Richmond Locomotive Works in January 1907 for the Norfolk and Western Railway. It was one of 125 M Class engines in operation on the N&W for around 50 years.
Numbers. 229; renum. 1950 in 1891; renum. 2800 in 1901; renum. 2925 in 1906. Nicknames. Mastodon. First run. April 1882. Scrapped. June 29, 1935, Brooklyn shops, Portland, Oregon. Mastodon was the unofficial name of the Central Pacific Railroad 's number 229, the world's first successful 4-8-0 steam locomotive.
The Norfolk and Western M, M1 and M2 Classes were a series of 4-8-0 steam locomotives owned and operated by the Norfolk and Western Railway (N&W). The M Classes were primarily assigned to pull the N&W's mainline freight trains, but following the introduction of the railway's Y Class 2-8-8-2's, the M Classes were reassigned to short line freight service.
The name "Mastodon" has also been applied to this type, [1] [2] though this nickname has also been mistakenly used for the 4-8-0 arrangement (Mastodon was the unofficial nickname of the Central Pacific's No. 229, the first 4-8-0 ever built), leading to some confusion. Sources refer to the 4-8-0 as the Twelve-wheeler.
The trailing wheels were positioned well behind a narrow firebox, which itself sat above the coupled wheels, necessitating the same design compromise between coupled wheel diameter and grate size as on a 2-8-0 Consolidation or 4-8-0 Mastodon. A more common 4-8-2 design was a progression of the classic 4-6-2 Pacific layout, which featured a wide ...
During the 1950s, N&W rebuilt its W Class 2-8-0 Consolidations into Shop Co W6 0-8-0Ts. In 1960, the N&W became the last major railroad in the United States to abandon steam locomotives for diesel-electric motive power. The Roanoke Shops continued to build and repair rolling stock until 2020 when Norfolk Southern closed them, ending 139 years ...