British Rail Class 44

British Rail Class 44

Infobox Locomotive
name = Derby Type 4
British Rail Class 44
powertype = Diesel-electric


caption = Preserved Class 44 number D8 at Rowsley South, on Peak Rail
nicknames = ‘Peak’
builder = British Railways’ Derby Works
buiddate = 1959–1960
roadnumber = D1–D10; later 44001–44010
totalproduction = 10
gauge = RailGauge|ussg|lk=on|al=on
primemover = Sulzer 12LDA28-A
generator =
tractionmotors =
whytetype = 1Co-Co1
uicclass = (1Co)'(Co1)'
wheeldiameter = convert|3|ft|9|in|m|3|abbr=on
minimumcurve = convert|5|chain|m|lk=in
trainbrakes = Vacuum
locobrakeforce = convert|63|LTf|sigfig=3|abbr=on|lk=in
wheelbase = convert|59|ft|8|in|m|2|abbr=on
length = convert|67|ft|11|in|m|2|abbr=on
width = convert|8|ft|10+1/2|in|m|2|abbr=on
height = convert|12|ft|10|in|m|2|abbr=on
weight = convert|133|LT|sigfig=3|lk=on
maximum_speed = convert|75|mi/h|km/h|0|abbr=on
poweroutput = "Engine:" convert|2300|bhp|0|abbr=on|lk=on
"At rail:" convert|1800|hp|0|abbr=on
tractiveeffort = "Maximum:" convert|50000|lbf|kN|sigfig=3|abbr=on|lk=on
fuelc
convert|840|impgal|abbr=on|lk=on
axleloadclass = Route availability 7
trainheating = Steam
multipleworking = ★ Blue Star
railroad = British RailwaysThe British Rail Class 44 or Sulzer Type 4 diesel locomotives were built by British Railways' Derby Works between 1959 to 1960. They were named after British mountains, and consequently nicknamed Peaks.

Description

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 modelled on this design. 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. Once the Class 45 units were available, with their higher running speed, 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.

Fleet details

Preservation

Two locomotives have survived to preservation.


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