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The British Railways Standard Class 4 tank is a class of steam locomotive, one of the BR standard classes built during the 1950s. They were used primarily on commuter and outer suburban services. They were capable of reaching speeds of 75 mph (121 km/h). [1]
Standard 4 Tank | Technical Details. BR Standard 2-6-4T Class 4 Mixed Traffic. A Brief History. When British Railways were formed in 1948 they inherited a large number of different classes of locomotives, some of which dated back to the 19th century.
- 225 lb/sq.in.
- 25,100 lb.
- 18in. x 28in.
- 2-6-4
- The 4-6-0s
- The 2-6-0s
- The 2-6-4S
- Decline and Withdrawal
- Preservation
The main purpose of the class was to be a fraction smaller version of the BR Standard Class 5s and other power classification engines under BR ownership. Being smaller in size allowed lower axle weight, increasing route availability to work over routes and lines where bigger engines couldn’t due to weight. By design, the Class 4 4-6-0 essentially B...
Doncaster Works’ drawing office had the task of designing the 2-6-0 Standard 4s, and also built 25 of the 115 total engines constructed. The designed followed closely to that of the LMS Ivatt Class 4s (More information on these can be found here) but sharing the same exterior appearance as and features of the other Standard Classes. Like the Ivatt ...
Like both tender types, the Standard 4 Tanks were influenced by existing LMS designs, such as the Fairburn 2-6-4 Tanks. The design of both the LMS and BR Tanks was very similar, with only a couple of noteworthy changes. These were reshaped cab and general lowering height to meet loading gauge requirements across BR and smaller cylinder diameter & i...
The BR Standard 4s survived right up until the last years on BR steam. Each of the three types played a vital role in the areas they work. This lead to a late start in withdrawal compared to other classes, 1964 seeing the first groups of engines being scrapped. Some engines were transferred to another region due to electrification, particularly in ...
4-6-0s
Six engines of the class have survived preservation, with five of these being restored to running order. 1. 75014 “Braveheart”– Restored to running order in 1994 a private group, 75014 has seen mainline action in the 90s and 00s, before being withdrawn for an extensive overhaul in 2004. Returning back to steam on the Dartmouth Steam Railway in late 2016 carrying BR Lined Black with Early Crest livery. Boiler ticket expires in 2026. 2. 75027– Purchased straight from BR, 75027 started hauling t...
2-6-0s
Only four of the 2-6-0s have survived into preservation, with three being restored so far. 1. 76017– Operational and based on the Mid Hants Railway, 76017 returned to traffic in 2016 following an overhaul. This was the first time the engine had run in two decades. BR Lined Black with Early Crest is the engine’s current livery. 2. 76077– Major components have moved this year to Loughborough based firm to under restoration. Was previously stored at the Gloucestershire and Warwickshire Steam Rai...
The Standard 4 tanks were originally allocated to all regions of British Railways, except the Western. They became particularly associated with the London, Tilbury and Southend Line (LT&S) working commuter services out of London until that route was electrified in 1962.
Designed by RA Riddles, British Railways' Chief Mechanical Engineer, these tanks were one of the most successful of the "Standards", doing well all that was asked of them. The Standard 4s shared much of the basic design of the LMS Railway's Class 4 2-6-4Ts built under both Stanier and Fairburn (some of the latter locos were built at Brighton ...
Parts between types would be interchangeable, and maintenance would be comparatively simple to undertake. Riddles was assisted by E.S. Cox and a design team, and by 1950 the first type – later known as the ‘’Britannia’’ Class – had been finalised on the drawing board.
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The British Railways Standard Class 4 tank is a class of steam locomotive, one of the BR standard classes built during the 1950s. They were used primarily on commuter and outer suburban services.
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