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The LSWR Class S11 was a class of 10 4-4-0 steam locomotives designed for express passenger work by Dugald Drummond. They were introduced to services on the London and South Western Railway in 1903. None of the class survived into preservation after their brief career in British Railways ownership.
The problem of uniting both power and traction in a compact express passenger locomotive design had taxed the Locomotive Superintendents of the LSWR for many years. [2] [ page needed ] Joseph Beattie was the first to establish the LSWR's policy of using smaller wheeled locomotives to handle these steep gradients. [2] [ page needed ]
Dugald Drummond attempted to grasp the nettle by utilising his new T9 class over the arduous route. It soon became clear that despite the merits of the T9s for fast running on the various express passenger services to the west of England, the large wheels of the class were not suited for the task in hand. A new design of locomotive was needed that incorporated the desired improvements to enable fast running on gradients. [1] [ page needed ]
Drummond took the decision to construct a new class of ten 4-4-0s especially for this part of the LSWR network. The class was to incorporate the same frames as the T9, though smaller 6 feet 1 inch (1.854 m) driving wheels were substituted, whilst they also had balanced crank axles. [3] [ page needed ] The boiler was also of 5 feet (1.52 m) diameter, another feature that was different from the T9s, capped off with a dome and stovepipe chimney. Production began at Nine Elms in 1903, and had ended by the end of the year with a total of ten locomotives. [2] [ page needed ] All locomotives were fitted with the Drummond "watercart" eight-wheel tender for longer running on the LSWR network.
The locomotive was fitted with cross-water tubes fitted into the firebox, as featured on the T9 class, although feedwater tubes were not fitted. [4] This was an attempt to increase the heat surface area of the water, which was achieved, though at a cost in boiler complexity. All ten were superheated between 1920 and 1922 by Robert Urie after took over from Drummond. [5]
| Year | Batch | Quantity | LSWR number | Notes |
|---|---|---|---|---|
| 1903 | S11 | 5 | 395–399 | |
| 1903 | V11 | 5 | 400–404 | |
Under the LSWR, the class was outshopped in the LSWR Passenger Sage Green livery with purple-brown edging, creating panels of green. [1] [ page needed ] This was further lined in white and black with 'LSWR' in gilt on the tender tank sides.
When transferred to Southern Railway ownership after 1923, the locomotives were outshopped in Richard Maunsell's darker version of the LSWR livery. [6] [ page needed ] The LSWR standard gilt lettering was changed to yellow with 'Southern' on the water tank sides. The locomotives also featured black and white lining. [7] [ page needed ]
However, despite Bulleid's experimentation with Malachite Green livery on express passenger locomotive, the Maunsell livery was continued with the S11s, though the 'Southern' lettering on the tender was changed to the 'Sunshine Yellow' style. During the Second World War, members of the class outshopped form overhaul were turned out in wartime black, and some of the class retained this livery to Nationalisation. [3] [ page needed ]
Livery after Nationalisation was initially Southern Wartime Black livery with 'British Railways' on the tender, and an 'S' prefix on the number, until superseded by the Standard BR 30xxx series.
The S11s were regarded as good locomotives on expresses around the ports served by the LSWR. [2] [ page needed ] The class was at first rostered to the West Country in order to ply their trade upon the gradients they were designed for. However, it was soon realised that the smaller wheels and larger boilers were not living up to expectations of successful operation on the route. The class was slower and more cumbersome than their siblings. This led to crews displaying their preference for the T9's higher speeds downhill and on the level stretches of railway. [7] [ page needed ]
Another aspect that did not endear the class to crewmen on this route was the fact that with a larger boiler, the S11s were heavier on water, which was a vital consideration on a railway with no water troughs to replenish the supply, and therefore skilled use of the injectors was required. [3] [ page needed ] The boiler was mounted higher above the frames, which led to instability concerning the ride of the locomotives at high speeds. [1] [ page needed ] As a result, more care had to be taken by crewmen in approaching junctions and speed restrictions. Due to their early withdrawal period, none were preserved for posterity.
| Year | Quantity in service at start of year | Quantity withdrawn | Locomotive numbers | Notes |
|---|---|---|---|---|
| 1951 | 10 | 9 | 30395–99, 30401–04 | |
| 1954 | 1 | 1 | 30400 |
The LSWR/SR H15 class was a class of 2-cylinder 4-6-0 steam locomotives designed by Robert Urie for mixed-traffic duties on the LSWR. Further batches were constructed by Richard Maunsell for the SR. They were given the nickname of "Junior King Arthur" due to the size of their driving wheels, the S15 and their N15 cousins had driving wheels which had a diameter of 5 foot and 7 inches and 6 foot and 7 inches respectively.
The SR N15X class or Remembrance class were a design of British 4-6-0 steam locomotives converted in 1934 by Richard Maunsell of the Southern Railway from the large LB&SCR L class 4-6-4 tank locomotives that had become redundant on the London–Brighton line following electrification. It was hoped that further service could be obtained from these locomotives on the Southern's Western Section, sharing the duties of the N15 class locomotives. The locomotives were named after famous Victorian engineers except for Remembrance, which was the LBSCR's memorial locomotive for staff members who died in the First World War.
The LSWR N15 class was a British 2–cylinder 4-6-0 express passenger steam locomotive designed by Robert W. Urie. The class has a complex build history spanning three sub-classes and eight years of construction from 1918 to 1927. The first batch of the class was constructed for the London and South Western Railway (LSWR), where they hauled heavy express trains to the south coast ports and further west to Exeter. After the Lord Nelsons, they were the second biggest 4-6-0 passenger locomotives on the Southern Railway. They could reach speeds of up to 90 mph (145 km/h).
The SR V class, more commonly known as the Schools class, is a class of steam locomotive designed by Richard Maunsell for the Southern Railway. The class was a cut down version of his Lord Nelson class but also incorporated components from Urie and Maunsell's LSWR/SR King Arthur class. It was the last locomotive in Britain to be designed with a 4-4-0 wheel arrangement, and was the most powerful class of 4-4-0 ever produced in Europe. All 40 of the class were named after English public schools, and were designed to provide a powerful class of intermediate express passenger locomotive on semi-fast services for lines which could cope with high axle loads but some of which had short turntables. Because of the use of a ‘’King Arthur’’ firebox, rather than the square-topped Belpaire firebox used on the Lord Nelsons, the class could be used on lines with a restricted loading gauge and some of the best performance by the class was on the heavily restricted Tonbridge to Hastings line. The locomotives performed well from the beginning but were subject to various minor modifications to improve their performance over the years. The class operated until 1961 when mass withdrawals took place and all had gone by December 1962. Three examples are now preserved on heritage railways in Britain.
The LSWR M7 class is a class of 0-4-4 passenger tank locomotive built between 1897 and 1911. The class was designed by Dugald Drummond for use on the intensive London network of the London and South Western Railway (LSWR), and performed well in such tasks. Because of their utility, 105 were built and the class went through several modifications over five production batches. For this reason there were detail variations such as frame length. Many of the class were fitted with push-pull operation gear that enabled efficient use on branch line duties without the need to change to the other end of its train at the end of a journey.
The LSWR S15 class is a British 2-cylinder 4-6-0 freight steam locomotive designed by Robert W. Urie, based on his H15 class and N15 class locomotives. The class had a complex build history, spanning several years of construction from 1920 to 1936. The first examples were constructed for the London and South Western Railway (LSWR), where they hauled freight trains to the south coast ports and further west to Exeter, as well as occasional passenger work in conjunction with their larger-wheeled N15 class counterparts.
The London and South Western Railway L11 class was a class of 4-4-0 steam locomotives designed for mixed traffic work. They were introduced in 1903 and were nicknamed "Large Hoppers". As with most other Drummond productions, the locomotive had two inside cylinders and Stephenson link valve gear.
The London and South Western Railway L12 class was a class of 20 4-4-0 steam locomotives designed for express passenger work by Dugald Drummond. They were introduced to the London and South Western Railway network in 1904. Despite the class being an unremarkable continuation of the Drummond lineage, one member was involved in the infamous Salisbury rail crash in June 1906. None of the class survived into preservation after their brief career in British Railways ownership.
The London and South Western Railway K10 Class was a class of 40 4-4-0 steam locomotives designed for mixed traffic work. They were introduced on the London and South Western Railway in 1901 and 1902 to the design of Dugald Drummond, where they earned the nickname "Small Hoppers".
The SECR N class was a type of 2-6-0 ("mogul") steam locomotive designed in 1914 by Richard Maunsell for mixed-traffic duties on the South Eastern and Chatham Railway (SECR). Built between 1917 and 1934, it was the first non-Great Western Railway (GWR) type to use and improve upon the basic design principles established by GWR Chief Mechanical Engineer (CME) George Jackson Churchward. The N class was based on the GWR 4300 Class design, improved with Midland Railway concepts.
The London and South Western Railway T9 class was a class of 66 4-4-0 steam locomotive designed for express passenger work by Dugald Drummond and introduced to services on the LSWR in 1899. One example has been preserved after British Railways ownership. They were given the nickname of "Greyhounds" due to their speed, up to 85 miles per hour (137 km/h), and reliability.
The LSWR 415 class is a 4-4-2T steam tank locomotive, with the trailing wheels forming the basis of its "Radial Tank" moniker. It was designed by William Adams and introduced in 1882 for service on the London and South Western Railway (LSWR).
The LSWR G6 class was an 0-6-0T tank locomotive designed by William Adams for the London and South Western Railway.
The London and South Western Railway F13 class was a class of 4-6-0 locomotives designed by Dugald Drummond for the London and South Western Railway (LSWR).
The LSWR Class T14 was a class of ten 4-6-0 locomotives designed by Dugald Drummond for express passenger use on the London and South Western Railway and constructed at Eastleigh in 1911–12.
The LSWR E14 Class was a class of 4-6-0 locomotive designed by Dugald Drummond for the London and South Western Railway.
The LSWR G14 class was a class of 4-6-0 locomotive designed by Dugald Drummond for the London and South Western Railway.
The LSWR P14 class was a class of 4-6-0 locomotive designed by Dugald Drummond for the London and South Western Railway.
The LSWR D15 class 4-4-0 was the last steam locomotive design by Dugald Drummond for the London and South Western Railway in 1912. By 1912, Dugald Drummond had built several classes of unsuccessful 4-6-0 express passenger locomotives. The result of these failures was that when he designed what was to be his last class in 1911, a new 4-4-0 design emerged from Eastleigh Works in February 1912, with what was to be the first of his D15 class.
The SECR K class was a type of 2-6-4 tank locomotive designed in 1914 by Richard Maunsell for express passenger duties on the South Eastern and Chatham Railway (SECR), which operated between London and south-east England. The Southern Railway (SR) K1 class was a three-cylinder variant of the K class, designed in 1925 to suit a narrower loading gauge. They were among the first non-Great Western Railway (GWR) types to use and improve upon the basic design principles of power and standardisation established by GWR Chief Mechanical Engineer (CME) George Jackson Churchward. The locomotives were based on the GWR 4300 class, improved by the Midland Railway's ideals of simplicity and ease of maintenance.