<kuid2:4468:4549:1> 4-6-2 Battle of Britain Class BR Green

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4-6-2 Battle of Britain Class

SR No. BR No. Name Date Built

21C151 34051 Winston Churchill 1946/47
34092 City of Wells 1949/50
34083 605 Squadron 1948/49
21C164 34064 (Hurricane) 1946/47 Fighter Command is the correct designation here,
Hurricane should be 21C165 & 34065
34075 264 Squadron 1948/49
34086 219 Squadron 1948/49
34077 603 Squadron 1948/49
21C118 34018 Tavistock 1956/56 Axminster is the correct designation here,
Tavistock should be 21C111 & 34011
34109 Sir Trafford Leigh-Mallory 1950/51
34080 145 Squadron 1948 74 Squadron is the correct designation here,
145 Squadron should be 34087

At the end of World War II, a fast and powerful mixed traffic engine was needed to replace the Southern's war-weary locomotive stock. Southern Railway introduced a new class of Light Pacific locomotive, capable of operating on a worn and damaged rail netework. Design effort started in 1943 and, after considering and rejecting a 4-6-0, the 'Light Pacific' was born, copying as closely as possible the Merchant Navy class design but with the objective of retaining the maximum possible power, whilst at the same time keeping the engines' weight to a ceiling of 86 tons, with an axle load of no more than 19 tons. This was achieved by utilising the Merchant Navy's bogie, coupled wheels, axleboxes and motion while reducing the size of the trailing wheels, cylinders and pistons. Further, the boiler and firebox were scaled down and utilised welding techniques to save weight.

Roll out occurred in June 1945, resplendent in pre-war Malachite livery, which sharply contrasted to the prevailing starkness of the wartime overall black livery. The class name was also replaced, gone the term 'Lightweight Pacific' and replaced by 'West Country' These locomotives were destined for operations in the south and south-west, while a subsequent batch given the class name of 'Battle of Britain' primarily operated in the south-east.

Initially 70 locomotives were ordered but the build was subsequently extended through and after nationalisation to a total of 110 examples. Of the 110, 66 were named after places and features of the south-west while the reamining 44 were named after squadrons and other aspects associated with the Battle of Britain and hence the 'Battle of Britain class'. In all respects other than the naming, they were identical locos to the WC class.

The Southern Railway Company stole a march on the other railway companies and gained a considerable amount of public support by introducing a bold forward looking design wearing a bright livery and by their naming policy honouring the war effort.

From Waterloo, beyond Okehampton to Launceston and Padstow, from Barnstaple via the 1 in 36 Morthoe bank to Ilfracombe, over Meldon viaduct or along the GWR route to Plymouth, on the S&D line to Bath, the 'West Country' pacifics were doing their stuff and holding their own when rostered to take a Merchant Navy task.

Technical Details Original Locos Rebuilt Locos

Introduced: May 1945 June 1957
Driving Wheel: 6 ft 2 ins 6 ft 2 ins
Bogie Wheel: 3 ft 1 in 3 ft 1 in
Length: 67 ft 4¾ ins 67 ft 4¾ ins
Weight: 128 tons 12 cwt 132 tons 3 cwt
Water Capacity: 8 ft 6 in wide locos: 4,500 gals Original tender: 5,000/5,500 gals
9ft wide locos: 5,500 gals Rebuilt 4,500 gal tender: 5,250 gals
Cylinders (3) 163/8 in x 24 in 163/8 in x 24 in
Boiler Pressure: 280 lb sq in 250 lb sq in
Tractive Effort: 31,046 lb 27,720 lb
Coal Capacity: 5 tons 5 tons
BR Power Classification: 7-P 5-F 7-P 5-F

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I would like to thank John Ewan (JWEwan), for hours of dedicated beta testing and research efforts to support this project and providing insights and ideas on how to improve the model, so cheers John for that work.