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The CL class is a class of diesel locomotives built by Clyde Engineering, Granville for the Commonwealth Railways in several batches between 1970 and 1972. The class was the last in the world to be built with the Electro-Motive Diesel bulldog nose but differed from previous builds in having a mansard roof .
The fact that they were primarily intended for services on the arduous Calder Valley route meant that Class 110 needed more power than other first generation DMUs, so they were fitted with 180 hp (130 kW) Rolls-Royce C6NFLH engines, and when delivered they had the highest hp/ton of any of the first generation DMUs, including the lightweights.
CL-108 17 January 1944 14 December 1945 — — Construction canceled 12 August 1945 when 67.8% completed, launched on 14 December 1945, for use in underwater explosion tests, sold on 2 April 1949 for scrapping New Haven CL-109 28 February 1944 — — — Construction cancelled 12 August 1945 and scrapped on slip Buffalo CL-110 2 April 1944 ...
The alternative approach was to design a new engine and increase the displacement per cylinder from the existing 71 to 110 cubic inches (1.2 to 1.8 L), or roughly a 50% increase. This resulted in the model 6-110, with 660 cubic inches (10.8 L) total displacement, which produced a continuous rating of 275 hp (205 kW) at 1800 rpm.
The design was based on the Electro-Motive Diesel EMD F7 locomotive. [1] The first 11 were delivered with EMD 16-567B, 1,119 kW (1,501 hp) engines and four powered axles with the remainder having 16-567C, 1,305 kW (1,750 hp) engines and six powered axles. The final 11 were fitted with dynamic braking. [2]
The management believed that the 9Fs were too large and powerful for most heavy freight traffic, along with being far more expensive to build and operate than the older 2-8-0 locomotives they supplemented. In response to this, the British Transport Commission drew a 2-8-0 Class 8F based on the Standard Class 5, like the LMS class 5 and 8Fs.
The class was introduced in 1928 and was a post-grouping development of the Midland Railway 483 Class with modified dimensions and reduced boiler mountings.. The numbering continued from where the Midland engines left off at 563 and eventually reached 700. 138 were built, though numbering is slightly complicated by renumberings and transfers.
The Great Western Railway (GWR) 2251 Class or Collett Goods Class was a class of 0-6-0 steam tender locomotives designed for medium-powered freight. They were introduced in 1930 as a replacement for the earlier Dean Goods 0-6-0s and were built up to 1948.