- LMS Royal Scot Class
name=LMS Royal Scot Class
railroadclass=6P; reclassified 7P in 1951
North British Locomotive Company(6100–6149) London Midland & Scottish Railway, Derby works (6150–6169)
serialnumber = 23595–23644 (6100–6149)
Sir Henry Fowler
Sir William Stanier
weight=84 tons 18 cwt
cylindersize=18 in bore × 26 in stroke
boiler = G10¼S; rebuilt: 2A
boilerpressure=250 psi superheated
leadingdiameter = 3 ft 3½ in
wheeldiameter=6 ft 9 in
valvegear=Walschaert (piston valves)
caption = Parallel boilered 6100 "Royal Scot" poses for the official photograph after preparation for its North American tour, 1933.|The
London, Midland and Scottish Railway(LMS) Royal Scot Class is a class of 4-6-0express passenger locomotive introduced in 1927. Originally having parallel boilers, all members were later rebuilt with tapered type 2A boilers, and were in effect two classes.
By the mid-1920s the LMS had followed the
Midland Railway's small engine policy that meant that it had no locomotives of sufficient power for its expresses on the West Coast Main Line. Trains were entrusted to LMS/MR Midland Compounds 4-4-0s, the LNWR Claughton Classand the L&YR Dreadnought 4-6-0s. Construction of 50 of a new class of 4-6-0was authorised from the North British Locomotive Worksin Glasgow, and they were introduced without testing, the design being based on the SR Lord Nelson Class; although Radford claims that the boiler owed much to the MR 0-10-0 Lickey Banker'Big Bertha'. A further 20 were built by Derby Works.
They were initially named after Regiments and some after historical LNWR locomotives, though those were renamed in 1935/6 to take more names of regiments.
From late 1931, after several bizarre forms were tried on various locomotives, the straight sided
Smoke deflectorswere added to stop drifting smoke; these were later replaced by angled-top items. From 1933 the class were taken off the top-link expresses, being superseded by the LMS Princess Royal Classand later the LMS Princess Coronation Classpacifics.
North American Tour
In 1933 one locomotive was sent to
North Americaon a tour, 6152 swapping identities with 6100 "The Royal Scot", the identities never being swapped back after its return.
LMS 6399 Furyof 1929 was an unsuccessful experimental prototype locomotive based on the Royal Scot. It was rebuilt by William Stanierin 1935 to become 6170 "British Legion". This served as the blueprint for later rebuilding.
In 1942 the LMS rebuilt two
LMS Jubilee Classlocomotives with type 2A boilers, but later turned to the Royal Scots. Most of these however turned out to be paper rebuilds - in effect new locomotives but rebuilding was more easily justified in the eyes of accountants. Initially these too were built without smoke deflectors but later acquired them.
All were withdrawn between 1962 and 1965.
The class title of "Royal Scot" was subsequently re-used in 1976 as an official name for the then-new Class 87s but it never stuck, partly out of respect for the original fleet.
Note: Built below refers to the 'LMS build date'.
This class forms the basis for the
Big City Enginein The Railway Series.
No. 6115 Scots Guardsman featured in the 1936 film
Mainline produced No. 6100 "Royal Scot" as a 00 model. Bachmann took over the tooling for the locomotive, and produced it for some time, with the ultimate intention of re-tooling the design to incorporate their own higher level of detail, but unfortunately Hornby beat them to it, and produced their own Rebuilt Scots, these being introduced in 2007, along with the rebuilt patriot locomotives.Brassmasters do a limited edition kit in 4mm.
David Jenkinson, "The Power of the Royal Scots" - OPC. (coffee table photo book).
O. S. Nock"Royal Scots and Patriots of the LMS"
* Radford, "Derby Works and Midland Locomotives", - Ian Allan, 1971
* "The Book of the Royal Scots" - Irwell Press ISBN 1-871608-99-6
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