LSWR K10 Class
Encyclopedia
The London and South Western Railway
K10 Class was a class of 40 4-4-0
steam locomotive
s 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 resulting K10 had the same 5' 7" diameter coupled wheels as the M7
and the boiler was interchangeable with the M7, 700
and C8 classes
, some could occasionally be seen with a 4000 gallon "watercart" tender for longer trips.
's darker version of the LSWR Sage Green with yellow lettering on the tender, with black and white lining.
This livery was continued under Bulleid despite his experimentations with Malachite Green, 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.
The class was haphazardly numbered by the LSWR. Numbering under the Southern retained the LSWR allocations.
Locomotive numbering was per BR standard practice, from 30135 to 30153 and 30329 to 30394. However, thirteen of the locomotives had been withdrawn by the end of 1948, resulting in gaps in the sequence.
Twenty-three passed into British Railways ownership in 1948. None has survived to be preserved.
London and South Western Railway
The London and South Western Railway was a railway company in England from 1838 to 1922. Its network extended from London to Plymouth via Salisbury and Exeter, with branches to Ilfracombe and Padstow and via Southampton to Bournemouth and Weymouth. It also had many routes connecting towns in...
K10 Class was a class of 40 4-4-0
4-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...
steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
s designed for mixed traffic work. They were introduced on the London and South Western Railway
London and South Western Railway
The London and South Western Railway was a railway company in England from 1838 to 1922. Its network extended from London to Plymouth via Salisbury and Exeter, with branches to Ilfracombe and Padstow and via Southampton to Bournemouth and Weymouth. It also had many routes connecting towns in...
in 1901 and 1902 to the design of Dugald Drummond
Dugald Drummond
Dugald Drummond was a Scottish steam locomotive engineer. He had a career with the North British Railway, LB&SCR, Caledonian Railway and London and South Western Railway...
, where they earned the nickname "Small Hoppers".
Background
In order to satisfy a pressing requirement for mixed-traffic locomotives, Drummond adopted the solution of a small-wheeled 4-4-0 he had previously employed on the Caledonian RailwayCaledonian Railway
The Caledonian Railway was a major Scottish railway company. It was formed in the early 19th century and it was absorbed almost a century later into the London, Midland and Scottish Railway, in the 1923 railway grouping, by means of the Railways Act 1921...
. The resulting K10 had the same 5' 7" diameter coupled wheels as the M7
LSWR M7 Class
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 , and performed well in such tasks. Because of their utility, 105 were built and the...
and the boiler was interchangeable with the M7, 700
LSWR 700 Class
The London and South Western Railway 700 class was a class of 30 0-6-0 steam locomotive designed for freight work. The class was designed by Dugald Drummond in 1897 and built by Dübs and Company at that company's Queen's Park works at Polmadie, Glasgow....
and C8 classes
Construction history
40 of the class were subsequently outshopped from the LSWR's Nine Elms locomotive works. They were generally paired with a 6-wheel tender because of their intended short journey lengths, which included local stopping trains and medium-level freight haulage, but as with the later L11 classLSWR L11 Class
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"...
, some could occasionally be seen with a 4000 gallon "watercart" tender for longer trips.
| Year | Batch | Quantity | LSWR numbers | Notes |
|---|---|---|---|---|
| 1901 | 329, 340–343 | |||
| 1902 | 344–345, 347, 393–394 | |||
| 1902 | 380–384 | |||
| 1902 | 385–389 | |||
| 1902 | 135–136, 390–392 | |||
| 1902 | 137–141 | |||
| 1902 | 142–146 | |||
| 1902 | 149–153 | |||
LSWR and Southern
Livery under the LSWR was Drummond's LSWR Passenger Sage Green, with purple-brown edging and black and white lining. Under Southern Railway ownership from grouping in 1923, the locomotives were outshopped in Richard MaunsellRichard Maunsell
Richard Edward Lloyd Maunsell held the post of Chief Mechanical Engineer of the South Eastern and Chatham Railway from 1913 until the 1923 Grouping and then the post of CME of the Southern Railway in England until 1937....
's darker version of the LSWR Sage Green with yellow lettering on the tender, with black and white lining.
This livery was continued under Bulleid despite his experimentations with Malachite Green, 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.
The class was haphazardly numbered by the LSWR. Numbering under the Southern retained the LSWR allocations.
Post-1948 (nationalisation)
Livery after Nationalisation was initially Southern livery with 'British Railways' on the tender, and an 'S' prefix on the number. The class was subsequently outshopped in BR Mixed Traffic Black with red and white lining, with the BR crest on the tender.Locomotive numbering was per BR standard practice, from 30135 to 30153 and 30329 to 30394. However, thirteen of the locomotives had been withdrawn by the end of 1948, resulting in gaps in the sequence.
Operational details
The class shared the same inability to sustain their power over long distances as the C8s, leading to the K10s being employed only on occasional main line trips over short distances. The class therefore gained the nickname of "Small Hoppers" from their crews. The aforementioned defect was not a hindrance, with the class leading an admirable career on secondary routes. Due to the LSWR being primarily a passenger railway, there were few heavy goods services that would have proved too much for the design despite its flaws.Twenty-three passed into British Railways ownership in 1948. None has survived to be preserved.