Bulldog nose
Encyclopedia
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...
s manufactured by GM-EMD and its licencees from 1939 to 1970. The term originated with EMD F-units
EMD F-unit
EMD F-units were a line of Diesel-electric locomotives produced between November 1939 and November 1960 by General Motors Electro-Motive Division and General Motors-Diesel Division. Final assembly for all F-units was at the GM-EMD plant at La Grange, Illinois and the GMDD plant in London, Ontario...
, as well as later E-unit
EMD E-unit
EMD E-units were a line of passenger train diesel locomotives built by the General Motors Electro-Motive Division and its predecessor the Electro-Motive Corporation . Final assembly for all E-units was in La Grange, Illinois. Production ran from May, 1937, to December, 1963. The name E-units...
models such as the E7, E8, and E9.
Clyde derivatives
EMD F7
The EMD F7 was a Diesel-electric locomotive produced between February 1949 and December 1953 by the Electro-Motive Division of General Motors and General Motors Diesel . It succeeded the F3 model in GM-EMD's F-unit sequence, and was replaced in turn by the F9. Final assembly was at GM-EMD's La...
series was modified by General Motors
General Motors
General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...
' Australian licence holder Clyde Engineering
EDi Rail
Downer Rail is a rail company based in Australia. Formed by a merger of Walkers and Clyde Engineering, it is currently a division of Downer EDi...
to fit Australian loading gauge
Loading gauge
A loading gauge defines the maximum height and width for railway vehicles and their loads to ensure safe passage through bridges, tunnels and other structures...
and axle load
Axle load
The axle load of a wheeled vehicle is the total weight felt by the roadway for all wheels connected to a given axle. Viewed another way, it is the fraction of total vehicle weight resting on a given axle...
constraints. The 1500 hp A1A-A1A Clyde/EMD ML1 locomotive was introduced on the Commonwealth Railways
Commonwealth Railways
The Commonwealth Railways were established in 1912, as part of a government department, currently called the Department of Infrastructure, Transport, Regional Development and Local Government, by the Government of Australia to construct the missing link in the east-west transcontinental railway and...
as the GM class, as well as exported to Pakistan. It was further developed into the ML2 as a dual cab Co-Co locomotive, with a bulldog nose at each end, for Victorian Railways
Victorian Railways
The Victorian Railways operated railways in the Australian state of Victoria from 1859 to 1983. The first railways in Victoria were private companies, but when these companies failed or defaulted, the Victorian Railways was established to take over their operations...
becoming that system's B class. A single-nose variant of the design, the EMD A7, with the revised 1800 hp EMD 567C
EMD 567
The EMD 567 is a line of diesel engines built by General Motors' Electro-Motive Division. This engine, which succeeded Winton's 201-A, was used in EMD's locomotives from 1938 until its replacement in 1966 by the EMD 645. It has a bore of , a stroke of and a displacement of 567 in³ per cylinder...
series engine was introduced as the NSWGR 42 class
New South Wales 42 class locomotive
The 42 class locomotives were built by Clyde Engineering at Granville, New South Wales for the New South Wales Government Railways between 1955 and 1956. Six locomotives were built numbered 4201–4206...
, VR S class
Victorian Railways S class (diesel)
The Victorian Railways S class mainline diesel electric locomotive were built from 1957 by Clyde Engineering for the Victorian Railways of Australia...
, and an upgraded CR GM class. The design continued to be developed with the dual-cab EMD AJ16C, introduced on NSWGR as the 421 class
New South Wales 421 class locomotive
The 421 class was built in between 1965 and 1966 by the Clyde Engineering in Granville, New South Wales. These mainline locomotives were a follow on from the 42 class units, which had one cab only. The locomotives retained the classic "bulldog nose" as with the other Clyde built locomotives, i.e....
, although unlike the earlier ML2 the bulldog nose was only used on one end of these locomotives. 1970 saw the introduction of the last new locomotive design in the world to utilise the F-series bulldog nose, the 3000 hp EMD AT26C, introduced on the Commonwealth Railways as the CL class
CL class
The CL class are an Australian diesel electric locomotives ordered by the Commonwealth Railways and delivered between 1970 and 1972. Altogether, 17 units were built by Clyde Engineering, Granville to a local design using imported EMD engines and traction equipment...
. A final Australian iteration of the bulldog nose in Australian locomotive practice was the rebuild of the 30 year-old Victorian ML2 units into the EMD AAT22C-2R, introduced as the V/Line
V/Line
V/Line is a not for profit regional passenger train and coach service in Victoria, Australia. It was created after the split-up of VicRail in 1983. V/Line is owned by the V/Line Corporation which is a Victorian State Government statutory authority...
A class.
The NOHAB bulldog
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
an "bulldog nose" locomotive classes, all of which were built by NOHAB
NOHAB
NOHAB was a manufacturing company in the city of Trollhättan, Sweden.The company was founded by Antenor Nydqvist, Johan Magnus Lidström and Carl Olof Holm in 1847 as Trollhättans Mekaniska Verkstad as a manufacturer of turbines for hydraulic power plants...
or AFB (with license from EMD), also frequently referred to as "round noses". These were effectively Clyde's ML2 design modified to meet European clearance standards, and had a lower nose and deeper cab windows.
The NOHAB-built classes include the DSB
Danske Statsbaner
DSB, an abbreviation of Danske Statsbaner , is the largest Danish train operating company, and the largest in Scandinavia. While DSB is responsible for passenger train operation on most of the Danish railways, goods transport and railway maintenance are outside its scope...
's class MY/MV
DSB class MY
The class MY is a series of diesel-electric locomotives built in the years 1954–1965 by NOHAB. A total of 59 units, numbered 1101–1159, were delivered to the Danish State Railways...
and MX
DSB class MX
The DSB Class MX is a lightweight, diesel-electric locomotive built by the Swedish company Nydqist & Holm AB in the years 1960 - 1962 for the Danish State Railways- History :...
, the NSB
NSB
-Education:*National Spelling Bee, the Scripps National Spelling Bee, a competition in the US*National Science Bowl, a high school academic competition*Northampton School for Boys, a British Secondary School*North Sydney Boys High School, an Australian high school...
's class Di3 and the MÁV
MAV
The acronym/initialism MAV may have several meanings, including:*Mathematical Association of Victoria of Victoria, Australia*Municipal Association of Victoria of Victoria, Australia*Micro air vehicle, a type of remotely controlled unmanned aerial vehicle...
class M61; NOHAB's design was later used by AFB, which built the NMBS/SNCB
NMBS/SNCB
The National Railway Company of Belgium, known as the or the Société Nationale des Chemins de fer Belges is the Belgian national railway operator.It is usually referred to in English as "Belgian Railways" or the SNCB....
's class 52-54 and the CFL
Chemins de Fer Luxembourgeois
Société Nationale des Chemins de Fer Luxembourgeois is the national railway company of Luxembourg. In 2005, the company carried approximately 14.1 million passengers and 11.7 million tonnes of goods...
's class 1600.
External links
- Andrew Toppan's list of surviving EMD E-units
- Gallery of NOHAB-GM diesel locomotives by P. Matsson
- Diesel locomotives built by NOHAB and AFB by Armand Schmit
- Wouter's Train Page by Wouter Radstake — pictures of both American and European "bulldog noses"