The Russian steam locomotive class O (from russian: Основной) was an early type of Russian

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomot ...

s. 9,129 locomotives were built between 1890 and 1928; hence it was the second most numerous class of locomotive in Russia, after E class, which was a unique number even on the international level.

Variants

Basic variants were early O^d and O^D (Russian: О^''д'', O^Д) with Joy valve gear and most numerous later O^V (O^В) with

Walschaerts valve gear The Walschaerts valve gear is a type of valve gear used to regulate the flow of steam to the pistons in steam locomotives, invented by Belgium, Belgian railway mechanical engineering, engineer Egide Walschaerts in 1844. The gear is sometimes name ...

. Some locomotives were built as two cylinder

simple expansion A compound engine is an engine that has more than one stage for recovering energy from the same working fluid, with the exhaust from the first stage passing through the second stage, and in some cases then on to another subsequent stage or even st ...

and others as two cylinder compounds.

Armoured locomotives

During

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

, the

Russian Civil War , date = October Revolution, 7 November 1917 – Yakut revolt, 16 June 1923{{Efn, The main phase ended on 25 October 1922. Revolt against the Bolsheviks continued Basmachi movement, in Central Asia and Tungus Republic, the Far East th ...

and the

Eastern Front of World War II The Eastern Front of World War II was a theatre of conflict between the European Axis powers against the Soviet Union (USSR), Poland and other Allies, which encompassed Central Europe, Eastern Europe, Northeast Europe (Baltics), and Sout ...

O-class locomotives were widely used as standard armoured locomotives in

armoured train An armoured train is a railway train protected with armour. Armoured trains usually include railway wagons armed with artillery, machine guns and autocannons. Some also had slits used to fire small arms from the inside of the train, a facilit ...

s due to rugged construction and low silhouette. Relatively lightweight, these locomotives could carry more armor without overloading the track.

Gallery

File:Model of Armoured train.JPG, A model of a Soviet Armoured train in

the Museum of the Moscow Railway The Museum of the Moscow Railway is situated next to Paveletsky Rail Terminal in Moscow. The museum reopened to private visitors in 2011 and it reopened to the general public in January 2012. It's the object of cultural heritage of Russia. Over ...

Paveletsky Rail Terminal Paveletsky station (russian: Павелецкий вокзал) is one of Moscow's nine main railway stations. Originally called Saratovsky Railway Station, it was named after the settlement of Pavelets, when the railroad heading south-east from ...

Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...

. It composes one Armoured Russian Locomotive Class O. File:Ov 5067 Moscow.JPG,

0-8-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles and no trailing wheels. Locomotives of this type are also referre ...

Armoured locomotive Ov 5067 at the

Central Armed Forces Museum , native_name_lang = , logo = , logo_upright = , logo_alt = , logo_caption = , image = Moscow Armed Forces Museum.jpg , image_upright = , alt = , capti ...

File:Ov 7024 Moscow.JPG, Ov 7024 Moskva-Ryazanskaya, Sortirovochnaya depot,

, an

File:Rosparsorm.jpg, Locomotive OD class the 100th manufactured at Krasnoye Sormovo in 1899 File:Ok Estonia 1920.jpg, Steam locomotive Ok (Od) on the Estonian Railway circa 1920 File:Bundesarchiv Bild 101I-216-0414-09, Russland, zerstörter russischer Panzerzug.jpg, Soviet armoured train No.2 "Yuzhnouralskiy Zheleznodorozhnik" (South-Ural Railroad Man), of 38th Armoured Train Unit, Briansk front, abandoned at Marmyzhi 29 June 1942 (OB-3 type) File:Od-1080 Nineteenth Century Freight locomotive Russian Railway Museum.jpg, Od-1080 at the

Russian Railway Museum The Russian Railway Museum is situated next to Baltiysky railway station in Saint Petersburg. The museum was established in 1978, its current site and exhibition opened to public on 1 November 2017. The museum utilizes the nineteenth century lo ...

Saint Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...

File:Грузовой паровоз Ов 6640 (1).jpg, Ov 6640 at

Varshavsky Rail Terminal Varshavsky station (russian: Варша́вский вокза́л, ''Varshavsky vokzal''), or Warsaw station, is a former passenger railway station in Saint Petersburg, Russia. It is located to the south of the city centre, and was in operation ...

St. Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...

File:Грузовой паровоз Ов 6640 (2).jpg, Ov 6640 at

File:Грузовой паровоз Ов 6640 (3).jpg, Ov 6640 at

File:Грузовой паровоз Ов 6640 (5).jpg, Ov 6640 at

File:Грузовой паровоз Ов 6640 (6).jpg, Ov 6640 at

File:Грузовой паровоз Ов 6640 (7).jpg, Ov 6640 at

File:Грузовой паровоз Ов 6640 (8).jpg, Ov 6640 at

File:Грузовой паровоз Ов 6640 (9).jpg, Ov 6640 at

References

External links

The Moscow Railway Museum at Rizhsky Rail Terminal

{{Rolling stock of Russia Railway locomotives introduced in 1890 О 0-8-0 locomotives О 5 ft gauge locomotives

Variants

Armoured locomotives

Gallery

See also

References

External links