British Rail Class 44

The 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 were then nicknamed Peaks.

Derby Type 4 British Rail Class 44
Preserved Class 44 number D8 at Rowsley South, on Peak Rail
Power type	Diesel-electric
Builder	British Railways’ Derby Works
Total production	10
Configuration	1Co-Co1
UIC classification	(1Co)'(Co1)'
Gauge
Wheel diameter	3 ft 9 in (1.143 m)
Minimum curve	5 chains (100 m)
Wheelbase	59 ft 8 in (18.19 m)
Length	67 ft 11 in (20.70 m)
Width	8 ft 10+1⁄2 in (2.71 m)
Height	12 ft 10 in (3.91 m)
Locomotive weight	133 long tons (135 t)
Fuel capacity	840 imp gal (3,800 L; 1,010 US gal)
Prime mover	Sulzer 12LDA28-A
Multiple working	★ Blue Star
Power output	Engine: 2,300 bhp (1,715 kW) At rail: 1,800 hp (1,342 kW)
Tractive effort	Maximum: 50,000 lbf (222 kN)
Train heating	Steam generator
Locomotive brakeforce	63 long tons-force (628 kN)
Train brakes	Vacuum
Career	British Railways
Number	D1–D10; later 44001–44010
Nicknames	‘Peak’
Axle load class	Route availability 7

British Rail Class 44 Media

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  D1 Scafell Pike at Stafford on the WCML working a passenger train, 14 April 1960

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  D5 Cross Fell at Long Eaton with a train of 16 tonne mineral wagons, May 1962

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  Swanwick Jnc. D4 'Great Gable'

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  44008 D8 Penyghent at Greatest Gathering, Derby

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  Cl. 44 "Peak" 1-Co-Co-1 no. 44001 "Scafell Pike" on a southbound freight train at Forest Road, north of Leicester station, 22/2/75.

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  British Railways Peak Class diesel electric D2 Helvellyn - around 1959/1960 on passenger duties at Crewe.

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  BR Peak - D3 Skiddaw at Crewe

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  Derby Etches Park Open Day 44

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  Cl 44 "Peak" no. 44006 "Whernside" with a brake tender and train of empty coal wagons heads north on the Midland Main Line at Allsop's Lane crossing, south of Loughborough, 9/7/75.