EMD GP39X
The EMD GP39X is a 2,600 hp (1,940 kW) diesel-electric locomotive built by the General Motors Electro-Motive Division. All six units built were constructed for the Southern Railway with Sout...
ALCO DL-202
The ALCO DL-202-2 and DL-203-2 diesel-electric locomotive (known informally as the Black Maria) was an experimental freight locomotive produced by ALCO of Schenectady, New York. The primary diesel bui...
ALCO DL-202 - Wikipedia
Schienenzeppelin
The Schienenzeppelin or rail zeppelin was an experimental railcar which resembled a zeppelin airship in appearance. It was designed and developed by the German aircraft engineer Franz Kruckenberg in 1...
Schienenzeppelin - Wikipedia
LNER Class W1
The LNER W1 No. 10000 (also known as the Hush-Hush due to its secrecy and "Galloping Sausage" before rebuild due to its shape) was an experimental steam locomotive fitted with a high pressure water-tu...
LNER Class W1 - Wikipedia
EMD SD89MAC
The EMD SD89MAC is a 4,500 horsepower (3,360 kW) C-C diesel-electric locomotive produced by General Motors Electro-Motive Division. Along with the SD80MAC and SD90MAC, the SD89MAC is one of the ...
EMD SD89MAC - Wikipedia
British Rail HS4000
HS4000, named Kestrel, was a prototype high-powered mainline diesel locomotive built in 1967 by Brush Traction, Loughborough as a technology demonstrator for potential future British Rail and export o...
British Rail HS4000 - Wikipedia
EMD SD40X
An EMD SD40X is an 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between 1964 and 1965. 9 examples of this locomotive were built for test purposes to test the new 6...
EMD SD40X - Wikipedia
EMD F69PHAC
The EMD F69PHAC locomotive, built in a joint venture between EMD and Siemens, was designed to test AC locomotive technology. Only two examples of this locomotive were made. The engine used the same ca...
EMD F69PHAC - Wikipedia
PRR Q1
The Pennsylvania Railroad's class Q1 comprised a single experimental steam locomotive for freight service, #6130, built in March 1942. A duplex locomotive, it had a wheel arrangement of 4-6-4-4, compr...
PRR Q1 - Wikipedia
PRR E2b
Pennsylvania Railroad class E2b comprised six experimental B-B electric locomotives built for the railroad by General Electric. In 1952 the Pennsylvania Railroad took delivery of eight experimental lo...
SNCF BB 20011 and 20012
The SNCF BB 20011 and SNCF BB 20012 were electric locomotives used for testing, built by Alsthom between 1985 and 1986. The two locomotives were the synchronous dual-voltage prototypes for Class BB 26...
Steam diesel hybrid locomotive
A steam diesel hybrid locomotive was a railway locomotive with a piston engine which could run on either steam from a boiler or diesel fuel. Examples were built in the United Kingdom, Russia and Italy...
Steam diesel hybrid locomotive - Wikipedia
High-pressure steam locomotive
A high-pressure steam locomotive is a steam locomotive with a boiler that operates at pressures well above what would be considered normal. In the later years of steam, boiler pressures were typically...
High-pressure steam locomotive - Wikipedia
Chesapeake and Ohio class M-1
The Chesapeake and Ohio class M-1 was a fleet of three steam turbine locomotives built by the Baldwin Locomotive Works for the Chesapeake and Ohio Railway in 1947–1948 for service on the Chessie strea...
PRR AA1
The Pennsylvania Railroad's class AA1 comprised two experimental electric locomotives constructed in 1905 by Westinghouse at the start of the PRR's electrification project.They were testbeds for large...
PRR AA1 - Wikipedia
British Rail APT-E
The APT-E, for Advanced Passenger Train Experimental, was the prototype Advanced Passenger Train tilting train unit. It was powered by gas turbines, the only multiple unit so powered that was used by ...
British Rail APT-E - Wikipedia
British Rail GT3
GT3, meaning Gas Turbine number 3 (following 18000 and 18100 as gas turbines 1 and 2), was a prototype mainline gas turbine locomotive built in 1961 by English Electric at their Vulcan Foundry in Newt...
PRR K5
The Pennsylvania Railroad's class K5 was an experimental 4-6-2 "Pacific" type, built in 1929 to see if a larger Pacific than the standard K4s was worthwhile. Two prototypes were built, #5698 at the PR...
PRR K5 - Wikipedia
GWR 7 (Armstrong) Class
The William Dean 7 or Armstrong Class refers to a group of four prototype 4-4-0 double-frame locomotives built at the Swindon Works of the Great Western Railway in 1894.
They were nominal renewals...
GWR 7 (Armstrong) Class - Wikipedia
British Rail 10100
British Railways 10100 was an unusual experimental diesel locomotive known informally as The Fell Diesel Locomotive (after Lt. Col. L. F. R. Fell, who was one of the designers). It was the joint produ...
British Rail 10100 - Wikipedia
DRG H 02 1001
The DRG H 02 1001 was a remarkable high-pressure steam locomotive, built by the engineering firm of Schwarzkopff to the design of Dr L. Löffler. The aim was not only to improve fuel economy—the ...
PRR S2
The Pennsylvania Railroad's class S2 was a steam turbine locomotive. One was built, #6200, delivered in 1944. The S2 was the sole example of the 6-8-6 wheel arrangement in the Whyte notation, with a...
PRR S2 - Wikipedia
PRR S1
The PRR S1 class steam locomotive (nicknamed "The Big Engine") was a single experimental locomotive, the longest and heaviest rigid frame reciprocating steam locomotive ever built. The streamlined Art...
PRR S1 - Wikipedia
DRG H 17 206
H17-206 was a high pressure steam locomotive built in Germany in 1925 by Henschel, on the Schmidt system. Rebuilt from a Prussian S 10.2.The H17-206 was not repeated.
PRR FF1
The Pennsylvania Railroad's class FF1 was an American electric locomotive, a prototype numbered #3931 and nicknamed "Big Liz". It was built in 1917 to haul freight trains across the Allegheny Mountai...
PRR FF1 - Wikipedia
LMS Turbomotive
The Turbomotive was a modified Princess Royal Class steam locomotive designed by William Stanier and built by the London, Midland and Scottish Railway in 1935. It used turbines instead of cylinders. I...
EMC 1800 hp B-B
Electro-Motive Corporation (later Electro-Motive Division, General Motors) produced five 1800 hp B-B experimental passenger train-hauling Diesel locomotives in 1935; two company-owned demonstrato...
EMC 1800 hp B-B - Wikipedia