Derby Type 4
British Rail Class 44
Preserved Class 44 number D8 at Darley Dale, on
75 mph (121 km/h)
Engine: 2,300 bhp (1,715 kW)
At rail: 1,800 hp (1,342 kW)
Maximum: 50,000 lbf (222 kN)
long tons-force (628 kN)
D1–D10; later 44001–44010
Axle load class
Route availability 7
Two preserved, remainder scrapped
British Rail Class 44 or Sulzer Type 4 diesel locomotives were built by British Railways' Derby Works between 1959 and 1960. They were named after British mountains, and consequently nicknamed Peaks.
Overview [ edit ]
In part inspired by
LMS prototypes 10000 and 10001, and by Southern Railway 10201-10203, the Class 44 diesels were some of the first big diesels commissioned for the British Rail modernisation project and were the precursors to the Class 45 and Class 46 locomotives of similar design.
Powertrain [ edit ]
Sulzer 12LDA28-A diesel engine drove a Crompton Parkinson GC426-A1 main generator which supplied power to six Crompton Parkinson C171-B1 traction motors. 
Train heating [ edit ]
When initially put into service the locomotives were fitted with
multi-unit working and steam heating boilers for passenger service. They worked regularly over the West Coast Main Line for a couple of years, also between St.Pancras and Manchester.
Freight service [ edit ]
44001 "Scafell Pike" heads a coal train south on the Midland Main Line, south of Loughborough, July 1975.
Once the Class 45 units were available the steam heating boilers were removed and the Class 44 locomotives were assigned to freight duties, largely in the
East Midlands where they were all based at Toton, where they stayed until 1980.
Fleet details [ edit ]
Preservation [ edit ]
Two locomotives have survived to preservation.
References [ edit ]
^ "class 44, D1, 44001, scafell pike, BR Sulzer Type 4". Derbysulzers.com . Retrieved . 2012-07-24
Further reading [ edit ]
Harris, Roger (1985). The Allocation History of BR Diesels and Electrics. (2nd ed.). Bromsgrove: Roger Harris.
McManus, Michael. Ultimate Allocations, British Railways Locomotives 1948 - 1968. Wirral. Michael McManus.
Jacob, Michael (October 1982). "Water, water everywhere...". . EMAP National Publications. pp. 28–31. Rail Enthusiast ISSN 0262-561X. OCLC 49957965.
Kerry, Mike (November 1986). "Spectacular Stuff!". . No. 62. EMAP National Publications. pp. 36–39. Rail Enthusiast ISSN 0262-561X. OCLC 49957965.