Diesel loco Class 47/7 47712 Lady Diana Spencer BR

Brand
Bachmann
gauge
HO gauge	16,5mm
power supply
DC
product type
diesel loco
gauge OO models
technical & model details
with motor	yes
couplers	NEM 362 coupler pocket, short coupling mechanism, English hook couplings
light	Light change based on the British model
interior details	Führerstand
interior lighting	yes
running number	47712
Length (mm)	255
scale	1:76
Age notice	not suitable under 14 years
digital & sound
digital plug	NEM 660 21-pin 21MTC
country
Great Britain	BR
era (continental)
era (Great Britain)	9

Model: OO gauge DC. Class 47/7 "Lady Diana Spencer" diesel locomotive in the design of the BR.

Prototype: In the late 1950s British Railways began planning a new fleet of diesel locomotives and after investigating several prototypes BR decided to commission 20 locomotives from Brush Engineering in February 1961. The resulting design became the icon of diesel locomotives, the Brush Type 4, a practical and versatile design with a very distinctive cab. Powered by a Sulzer engine and with an initial output of 2,750 hp, the locomotive reached a top speed of 75 miles per hour with a tractive effort of 55,000 pounds. Construction began in January 1962 and the first locomotive, numbered D1500, appeared at the end of September that year with test runs in the London Midland Region and the Western Region. The design was a success and BR ordered a total of 512, which were built continuously until early 1967. This made them the largest single class of mainline diesel locomotives in the UK.
During this period and in subsequent years, several variants appeared, increasing speed and tractive effort up to 95 miles per hour and 62,000 pounds respectively. Originally fitted with four-digit head codes, these were changed to marker lights in the late 1980s, with high-powered lights and roof aerials added. Further variations included the fitting of various types of steam boiler on early BR coaches, later replaced by electric train heaters for use on modern rolling stock. The initial four-digit numbering system was changed to five digits with the introduction of the TOPS coding system, classifying the locomotives as Class 47 diesel locomotives with variants 47/0, 47/2, 47/3, 47/4 and 47/7. By the end of the 1990s, half of the Class 47 fleet had been retired or scrapped and 33 were converted to Class 57 locomotives.