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Railmotor is a term used in the United Kingdom and elsewhere for a railway lightweight
railcar A railcar (not to be confused with a railway car) is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach (carriage, car), with a drive ...
, usually consisting of a railway carriage with a steam traction unit, or a diesel or petrol engine, integrated into it.


Steam railcars


Overview

In the earliest days of railways, designers wished to produce a vehicle for passenger carrying that was economical to build and operate on routes where passenger numbers were light. A single coach with its own prime mover was a solution adopted in some cases; this may be thought of as the predecessor to the
railcar A railcar (not to be confused with a railway car) is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach (carriage, car), with a drive ...
, a term more associated with the use of internal combustion engines.
William Bridges Adams William Bridges Adams (1797 – 23 July 1872) was an English author, inventor and locomotive engineer. He is best known for his patented Adams axle – a successful radial axle design in use on railways in Britain until the end of steam trac ...
started building railmotors in small numbers as early as 1848. The
Bristol and Exeter Railway The Bristol & Exeter Railway (B&ER) was an English railway company formed to connect Bristol and Exeter. It was built on the broad gauge and its engineer was Isambard Kingdom Brunel. It opened in stages between 1841 and 1844. It was allied with ...
used a steam carriage. In most cases the early designs were unsuccessful technically, but in the early years of the twentieth century, street-running passenger tramways started to use small steam engines to draw tramcars, replacing the customary horse traction. In many cases the tramways soon adopted electric traction instead, and the attractiveness of the cheap and frequent conveyance abstracted business from the railways in urban areas. The railways responded by opening new stopping places (to serve more closely the new suburban housing) and sought to reduce their operating cost by reintroducing railmotors, which were cheaper to construct. The
London and North Western Railway The London and North Western Railway (LNWR, L&NWR) was a British railway company between 1846 and 1922. In the late 19th century, the L&NWR was the largest joint stock company in the United Kingdom. In 1923, it became a constituent of the Lo ...
,
Lancashire and Yorkshire Railway The Lancashire and Yorkshire Railway (L&YR) was a major British railway company before the 1923 Grouping. It was incorporated in 1847 from an amalgamation of several existing railways. It was the third-largest railway system based in northern ...
,
London, Brighton and South Coast Railway The London, Brighton and South Coast Railway (LB&SCR; known also as the Brighton line, the Brighton Railway or the Brighton) was a railway company in the United Kingdom from 1846 to 1922. Its territory formed a rough triangle, with London at its ...
,
Great North of Scotland Railway The Great North of Scotland Railway (GNSR) was one of the two smallest of the five major Scottish railway companies prior to the 1923 Grouping, operating in the north-east of the country. Formed in 1845, it carried its first passengers the fr ...
and
Great Western Railway The Great Western Railway (GWR) was a British railway company that linked London with the southwest, west and West Midlands of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament on 31 August 1835 and ran ...
introduced them. Nonetheless, the railmotors had a number of disadvantages: their frequency, and the closeness of their stopping places, could not match that of the tramcars. The intrinsic compromises in fitting a steam engine inside the limited space available made them mechanically inefficient, and their power was (in most designs) insufficient to handle attached vehicles for parcels or additional coaches at times of exceptional demand such as public holidays; and in nearly all cases they still required a three-man crew (driver, fireman and guard), a significant expense compared with the single crew member of a tramcar. They also encountered operational and maintenance problems on railways used to treating locomotives and carriages as separate entities: Servicing the prime mover in a locomotive shed or workshop frequently made the carriage body and interior dirty, and some railmotor designs required that some mechanical work be carried out from inside the carriage portion which aggravated the problem. Stabling railmotors in carriage sheds meant introducing the unit's smoke, steam, ash and dust into a relatively clean environment and requiring more effort to keep not only the railmotor but other carriages stabled alongside it suitably clean, and carriage sheds did not have staff trained in servicing and maintaining the power units of railmotors. Some railways invested in dedicated sheds to store and service railmotors, but this merely introduced additional running and manning costs which further reduced the railmotors' supposed economy of operation.


Designs

There were two basic designs: * A small
0-4-0 Under the Whyte notation for the classification of steam locomotives, represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven. The wheels on the earliest four-coupled locomotives were ...
or
0-2-2 An 0-2-2, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is one that has two coupled driving wheels followed by two trailing wheels, with no leading wheels. The configuration was briefly built by Robert St ...
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 ...
with one end of a
coach Coach may refer to: Guidance/instruction * Coach (sport), a director of athletes' training and activities * Coaching, the practice of guiding an individual through a process ** Acting coach, a teacher who trains performers Transportation * Co ...
hung on it like an articulated lorry. * A coach with a
steam engine A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be trans ...
built into one end of it. This type would sometimes have a
vertical boiler A vertical boiler is a type of fire-tube or water-tube boiler where the boiler barrel is oriented vertically instead of the more common horizontal orientation. Vertical boilers were used for a variety of steam-powered vehicles and other mobile ma ...
. These machines were not a great success because they lacked flexibility. Most could haul a single trailer, but no more. This meant they were unable to cope with greater than expected passenger demands – a classic example being busy market days on an otherwise lightly used rural branch line. They were also unable to haul goods wagons, requiring a conventional locomotive to be stationed on the same line in any case for these duties. In several cases railmotors were victims of their own success - the increased service frequency and more modern rolling stock that the railmotors provided, plus the opening of additional halts along lines that were often part of a conversion to railmotor operation, lead to significant increases in passenger numbers and loadings, requiring the addition of driving trailers to meet demand which overtaxed the low-powered machinery of many railmotor designs, especially on routes with steep gradients. For this reason, they were largely superseded by push-pull trains and the GWR converted some of their railmotors into autocoaches for this purpose. The
South Eastern and Chatham Railway The South Eastern and Chatham Railway Companies Joint Management Committee (SE&CRCJMC),Awdry (1990), page 199 known as the South Eastern and Chatham Railway (SE&CR), was a working union of two neighbouring rival railways, the South Easter ...
built its P Class of small, light tank locomotives specifically to replace railmotors in the 1900s, while the
London and South Western Railway The London and South Western Railway (LSWR, sometimes written L&SWR) was a railway company in England from 1838 to 1922. Originating as the London and Southampton Railway, its network extended to Dorchester and Weymouth, to Salisbury, Exeter ...
introduced its C14 Class which were essentially self-contained railmotor power units that allowed greater flexibility by separating the engine and the carriage sections for working as push-pull trains. In the late 1920s, there was another revival of railmotors with the introduction of new designs from Clayton and
Sentinel Sentinel may refer to: Places Mountains * Mount Sentinel, a mountain next to the University of Montana in Missoula, Montana * Sentinel Buttress, a volcanic crag on James Ross Island, Antarctica * Sentinel Dome, a naturally occurring grani ...
with high-speed
motor An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power g ...
s and geared drive. The
London and North Eastern Railway The London and North Eastern Railway (LNER) was the second largest (after LMS) of the " Big Four" railway companies created by the Railways Act 1921 in Britain. It operated from 1 January 1923 until nationalisation on 1 January 1948. At th ...
bought over 80 of them but, again, they were short-lived. Some lasted no more than 10 years and all had been withdrawn by 1947. From the 1930s, the
diesel railcar A railcar (not to be confused with a railway car) is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach (carriage, car), with a drive ...
made great progress and by the 1950s the railmotor was consigned to history. The diesel's ability to use multiple unit control was an advantage.


Heritage examples

;United Kingdom The
Great Western Society Didcot Railway Centre is a railway museum and preservation engineering site in Didcot, Oxfordshire, England. The site was formerly a Great Western Railway engine shed and locomotive stabling point. Background The founders and commercial backe ...
, based at Didcot, has restored a Great Western Railway steam railmotor, built in 1908, to working condition. It regularly operates throughout the summer and has visited other preserved railways in the west country and Wales. It also operated on the mainline between Liskeard and Looe in November 2012. Another mostly complete example is a Midland Railway railmotor, which was later turned into an Officers' Saloon for inspection duties. It lasted in preservation from 1968 as a holiday home, then went to the National Railway Museum where inadequate outside storage led to its deterioration. It was later moved to a farm in 2015 and remains there as of May 2019. In
Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...
, the heritage
Downpatrick and County Down Railway The Downpatrick and County Down Railway (DCDR) is a five-foot, three-inch (1,600 mm) gauge heritage railway in County Down, Northern Ireland. It is operated by volunteers and runs passenger trains using steam and diesel locomotives, diesel ra ...
(D&CDR) owns an example of a
Belfast and County Down Railway The Belfast and County Down Railway (BCDR) was an Irish gauge () railway in Ireland (later Northern Ireland) linking Belfast with County Down. It was built in the 19th century and absorbed into the Ulster Transport Authority in 1948. All but th ...
railmotor which was converted to an autotrain driving trailer while in service. After withdrawal it was used as private accommodation in a field before being restored to working order. The D&CDR also has
Great Southern and Western Railway The Great Southern and Western Railway (GS&WR) was an Irish gauge () railway company in Ireland from 1844 until 1924. The GS&WR grew by building lines and making a series of takeovers, until in the late 19th and early 20th centuries it was the ...
No. 90, which was built in 1875 as a railmotor but had its carriage portion removed in 1915. ;Australia (In Australia, the term "railmotor" was used in those states, especially
New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...
, with a strongly British-influenced railway tradition. It was applied to diesel or petrol-powered self-propelled passenger carriages otherwise termed "railcars" on Australian railways where a more American tradition applied, such as the
Commonwealth Railways The Commonwealth Railways were established in 1917 by the Government of Australia with the Commonwealth Railways Act to administer the Trans-Australia and Port Augusta to Darwin railways. It was absorbed into Australian National in 1975. O ...
and
South Australian Railways South Australian Railways (SAR) was the statutory corporation through which the Government of South Australia built and operated railways in South Australia from 1854 until March 1978, when its non-urban railways were incorporated into Austr ...
. Examples of New South Wales railmotors were the 400 and 500 class and the CPH class "tin hares", and in
Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...
the
Walker railmotor The family of Walker railmotors were a type of diesel railcar operated by the Victorian Railways in Australia. After World War II, the Victorian Railways undertook a major rebuilding program known as Operation Phoenix. One of the first tasks was ...
. Similar vehicles in South Australia, the Brill 75 class, were termed "railcars".) A 1905-vintage, British-built steam railmotor is operated on the
Pichi Richi Railway The Pichi Richi Railway is a narrow-gauge heritage railway in the southern Flinders Ranges of South Australia between Quorn and Port Augusta. For much of its length the line lies in the picturesque Pichi Richi Pass, where the line was complete ...
: the former
South Australian Railways South Australian Railways (SAR) was the statutory corporation through which the Government of South Australia built and operated railways in South Australia from 1854 until March 1978, when its non-urban railways were incorporated into Austr ...
Steam Motor Coach (SMC) no. 1,During brief ownership by the Commonwealth Railways, it was classified as NJAB 1. the only example of its type operating in the world. The engine unit, built by
Kitson and Company Kitson and Company was a locomotive manufacturer based in Hunslet, Leeds, West Yorkshire, England. Early history The company was started in 1835 by James Kitson (businessman), James Kitson at the Airedale Foundry, off Pearson Street, Hunslet, ...
of Leeds, England, consists of a small
saturated Saturation, saturated, unsaturation or unsaturated may refer to: Chemistry * Saturation, a property of organic compounds referring to carbon-carbon bonds ** Saturated and unsaturated compounds **Degree of unsaturation ** Saturated fat or fatty ac ...
locomotive-type boiler and a cab fitted on a four-wheel (720 mm diameter) underframe. Two outside cylinders delivering 2015 pounds (8.96k N) of tractive effort drive the rear axle, which is the only one powered; valve gear is
Walschaerts 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 ...
. The coach unit, finished in dark oak-stained and varnished timber, was built by the Metropolitan Amalgamated Railway Carriage and Wagon Company of Birmingham. The first class compartment has elaborate pressed ceiling patterns and carpeted floor; second class has a plain ceiling and linoleum flooring. Seating is upholstered with mock leather; nine first class seats and thirteen second class are in separate compartments. SMC no. 1 was nicknamed the "Coffee Pot" after railwaymen chalked "Coffee" and "Cocoa" on two water barrels that had been placed on the running boards on either side as a spare water supply; the term persists today. The South Australian Railways inaugurated the vehicle in August 1906 on the narrow-gauge1067 mm (3 ft 6 in) gauge. Great Northern Division; a similar unit went to the South East Division. Its regular duty was a weekly trip to
Hawker Hawker or Hawkers may refer to: Places * Hawker, Australian Capital Territory, a suburb of Canberra * Hawker, South Australia, a town * Division of Hawker, an Electoral Division in South Australia * Hawker Island, Princess Elizabeth Land, Antarct ...
, 65 km (40 mi) away, hauling a four-wheel van to carry parcels and mail. It was hired for charter on weekends, often by tennis and football clubs. It spent its entire working life operating out of the
Quorn Quorn is a brand of meat substitute products, or the company that makes them. Quorn originated in the UK and is sold primarily in Europe, but is available in 14 countries. The brand is owned by parent company Monde Nissin. Quorn is sold as bo ...
locomotive depot until 1932, when it was stored and, later, publicly displayed at
Port Augusta Port Augusta is a small city in South Australia. Formerly a port, seaport, it is now a road traffic and Junction (rail), railway junction city mainly located on the east coast of the Spencer Gulf immediately south of the gulf's head and about ...
and
Alice Springs Alice Springs ( aer, Mparntwe) is the third-largest town in the Northern Territory of Australia. Known as Stuart until 31 August 1933, the name Alice Springs was given by surveyor William Whitfield Mills after Alice, Lady Todd (''née'' Al ...
. In 1975 it was returned to Quorn for restoration to working order by the Pichi Richi Railway Preservation Society. After extensive work, it was returned to service in 1984 and now operates at regular intervals.


Fleets


See also

*
Autorail The French word Autorail describes a single powered railcar capable of carrying passengers. While the concept faded for a while, it has been introduced with a new range of vehicles for both standard and metre gauge lines. Many autorails from the ...
*
British steam railcars A steam railcar is a rail vehicle that does not require a locomotive as it contains its own steam engine. The first steam railcar was an experimental unit designed and built in 1847 by James Samuel and William Bridges Adams. In 1848, they made ...
*
Railbus A railbus is a lightweight passenger railcar that shares many aspects of its construction with a bus, typically having a bus (original or modified) body and four wheels on a fixed base, instead of on bogies. Originally designed and developed ...
*
Railcar A railcar (not to be confused with a railway car) is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach (carriage, car), with a drive ...
*
Rail motor coach A motor coach (international usage) or motorcar (US usage) is a self-propelled passenger vehicle also capable of hauling a train. With multiple unit train control, one operator can control several "motor coaches", possibly even combined with loc ...


Notes


References


Further reading

* * * *{{cite book , last = Mountford , first = Eric R , title = The Barry Railway, Diagrams and photographs of Locomotives, Coaches and Wagons , publisher = Oakwood Press , year = 1987 , location = Oxford


External links


History of GWR railmotors and autocoaches

The GWR Steam Railmotor Project

Pichi Richi Railway