Home »

Lms stanier class 5 4-6-0

The meaning of «lms stanier class 5 4-6-0»

The London Midland and Scottish Railway Stanier Class 5 4-6-0, commonly known as the Black Five, is a class of 4-6-0 steam locomotives. It was introduced by William Stanier and built between 1934 and 1951, of which 842 were built and were numbered 4658-5499 (BR then renumbered 44658-45499). Several members of the class survived to the last day of steam on British Railways in 1968, and eighteen are preserved.

The Black Fives were a mixed traffic locomotive, a "do-anything go-anywhere" type, designed by Stanier, who had previously been with the GWR. In his early LMS days, he designed his Stanier Mogul 2-6-0 in which he experimented with the GWR school of thought on locomotive design. A number of details in this design he would never use again realising the superiority of details not used on the GWR. Stanier realised that there was a need for larger locomotives. These were to be the LMS version of the GWR Halls but not a copy, as the Hall was too wide to run most places in Britain. They shared similar cylinder arrangement (two outside), internal boiler design and size and 6 foot driving wheel diameters.

In their early days the locomotives were known as the "Black Staniers" from their black livery, in contrast to Stanier's other class of 4-6-0, the LMS Stanier Jubilee Class, which were painted crimson (and known until April 1935 as the "Red Staniers"). Later on, the nickname of the former became "Black Five", the number referring to the power classification. This was originally 5P5F, but from 1940 was shown on cabsides as the simple figure 5. Eight hundred and forty-two were constructed.[1]

There were a number of detail variations in the locomotives and they did not all remain in the same condition as built. Some locomotives built under British Railways administration were used as test beds for various design modifications with a view to incorporating the successful modifications in the Standard Classes of locomotives built from 1951 onwards. These modifications included outside Caprotti valve gear, roller bearings (both Timken and Skefco types) on the coupled and tender axles in varying combinations, and an experimental steel firebox. Other locomotives had modified draughting to "self clean" the smokebox (thereby reducing turn-around and disposal times and eliminating or mitigating one of the most unpopular jobs).

Numbering started from 5000, with the first twenty being ordered from Crewe Works in April 1934, and a further fifty (5020–5069) ordered from the Vulcan Foundry in 1933.[2] The first of the Vulcan Foundry engines entered service in 1934, and the entire order of 50 was delivered before the first Crewe-built engine, No. 5000, was completed in February 1935.[3] The first 57 locomotives were built with domeless boilers with straight throatplates and a low degree of superheat (14 elements in two rows), the boilers of the remaining 13 (5007–5019) were provided with a three-row version (21 elements)[4] having greater total surface area and giving less obstruction to gas flow.[3] The original 57 boilers were converted later to higher superheat (24 elements) and fitted with a dome. Further orders were placed with Crewe (5070–5074), Vulcan Foundry (5075–5124) and Armstrong Whitworth (5125–5224) for a total of 155 locomotives which were also built with domeless boilers with straight throatplates and 21 element superheaters. All these boilers, including the early converted ones with a dome, were fitted indiscriminately to any of the first 225 engines, which could appear at various times with domed or domeless boilers.

Related Searches

LMS Stanier Class 5 4-6-0 4806LMS Stanier Class 5 4-6-0 4871LMS Stanier Class 5 4-6-0 4767
LMS Stanier Class 5 4-6-0 5305LMS Stanier Class 5 4-6-0 5231LMS Stanier Class 5 4-6-0 4932
LMS Stanier Class 5 4-6-0 5110LMS Stanier Class 5 4-6-0 5000LMS Stanier Class 5 4-6-0 5212
© 2015-2021, Wikiwordbook.info
Copying information without reference to the source is prohibited!
contact us mobile version