BR standard class 3MT 2-6-2T
| BR standard class 3MT 2-6-2T | |
|---|---|
 82026 in 1965 in shunting operations at London Waterloo station
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| Numbering: | 82000-82044 |
| Number: | 45 |
| Manufacturer: | Swindon Railway Works |
| Year of construction (s): | April 1952 - August 1955 |
| Retirement: | February 1964 - July 1967 |
| Axis formula : | 1'C1 ' |
| Type : | 1'C1 'h2t |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 12,460 mm |
| Height: | 396 mm |
| Width: | 259 mm |
| Wheel set mass : | 16.56 t |
| Coupling wheel diameter: | 1,600 mm |
| Driving wheel diameter: | 1,600 mm |
| Impeller diameter front: | 914 mm |
| Rear wheel diameter: | 914 mm |
| Number of cylinders: | 2 |
| Boiler : | BR6 (modified GWR No. 2) |
| Water supply: | 6.8 m³ |
| Fuel supply: | 3.05 tons of coal |
| Drive: | steam |
The BR standard class 3MT 2-6-2T was a class of steam locomotives designed by Robert Riddles for British Railways . It was a two-cylinder tank locomotive in a modular hybrid design. The chassis corresponded in essential parts to that of the LMS class 4MT Ivatt 2-6-0 and the boiler was a modified GWR standard boiler No. 2 as it was in the GWR Large Prairie 2-6-2T and 5600 class 0-6- 2T was used. All 45 machines were produced together with those of the Tender Version " 2-6-0 " from April 1952 to August 1955 in Swindon Works locomotive factory of the Great Western Railway (GWR) in Swindon , County Wiltshire in England .
Constructive features
The standard boiler No. 2 used on the Great Western Railway was slightly modified for the construction of the "3MT 2-6-2T". He received an additional dome and the steam pipes been made while retaining the flange 5 to 13 / 16 cut-inch (147.64 mm). The internal designation was BR6.
Although the pistons, drive rods and coupling rods used corresponded to those of the BR standard class 4MT 2-6-0 , the 5 ft, 3 in (1600 mm) drive wheels made at Doncaster had a different diameter. The chassis consisted largely of identical parts of the LMS class 4MT designed by George Ivatt . The suspensions were derived from those of the LMS class 2MT 2-6-0 and the LMS class 2MT 2-6-2T . A number of standard components from LMS locomotives were also used for the braking system.
The original cylinder heads of the two 17 ½ "x 26" drive cylinders with screwed-in overpressure valves according to the Swindon design drawings SL / SW / 35 and SL / SW / 85 were used in both the front (SL / SW / 666) and the rear (SL / SW / 667) cylinders replaced with pressed-in Renewals Inc. "bolt-on" relief valves.
As can be seen from the original BR drawing SL / SW / 616, in contrast to a number of larger locomotives of the BR standard classes 6 and 7, the exhaust steam distributor of the BR standard class 3MT 2-6-2T within the smoke chamber was a welded steel construction .
Painting
With the entry into service of the new class, all locomotives were given the British Railways MT Black livery . From 1957, the models for the routes in the Western Region were given a lined green paint (BR-Green). From the early 1960s, as a cost-saving measure, then also in plain green without lines. For all other routes, the black paintwork was retained until the end.
A special feature was locomotive 82044, which was initially in the green paintwork of the Western Region, but was then to be repainted in black due to a change of region. During this repainting process, it was mistakenly given a four-digit performance classification that it retained until it was decommissioned.
commitment
The first of a total of 45 locomotives of this series was put into service with the number 82000 in mid-1952. From this time on they were used on the routes of the British Railways in the regions Southern and North Eastern and later the Western Region and the London Midland Region . The locomotives of this class, like almost all BR standard classes of the post-war years, had a rather short service life. They were mostly used in feeder services on shorter routes and were soon replaced by diesel railcars. The 82043 locomotive had the shortest service life at just eight years and eight months. The first locomotive in the class, the 82000, was in service for the longest at over 15 years.
In addition to the last two locomotives No. 82019 and 82029 of this class from the Nine Elms region , four more survived the end of the steam era. The numbers 82000, 82003, 82031 and 82034 were relocated from Wales to the Patricroft depot at the end of 1966 for use on suburban railways in Manchester . Although they were not really necessary there, they will remain there until the depot closed in 1968. One of these four locomotives had only had a very low mileage since its last overhaul, so there were some interested parties. The asking price of £ 1,500 was too high and it was also sold to John Cashmore Ltd. by October 1968. scrapped in Newport, South Wales.
Special incidents
On October 16, 1961, there was a near collision in the county of Yorkshire ( North Riding of Yorkshire ) when a freight train pulled by locomotive 82028 came across another train on the same track. The collision could be prevented by diverting the 82028 to a siding and ramming a buffer stop.
82045 Locomotive Trust
Since no example of the 3MT 2-6-2T class has survived, the "82045 Steam Locomotive Trust" association has made donations to finance the construction of a new BR standard class 3MT 2-6-2T with the consecutive but new serial number 82045 to realize. The association believes that the relatively high performance of the two 17½ "x 26" cylinders paired with their low axle load makes the 3MT 2-6-2T class an ideal locomotive for today's museum railways. The preserved chimney of the 3MT 2-6-0 No. 77014 and the 16-spoke wheel sets of the BR standard class 4MT 2-6-0 No. 76080, which were scrapped on the "Barry scrapyard" in the early 1980s, are used for this Years. Other parts are being newly manufactured or already completed on the Severn Valley Railway's premises .
Modelling
The company Tri-ang Railways (later Hornby Railways ) produced a detailed model of the BR 3 2-6-2T in BR-Green and BR-Black of nominal size 00 from the 1960s . Another 00 model was released by Bachmann Europe Plc in February 2009 and a model of nominal size N under their Graham Farish brand .
Web links
literature
- Rodger P. Bradley: The Standard Steam Locomotives of British Railways . David & Charles Publishers plc, 1984.
- Paul J. Quirin, RK Taylor: A Detailed History of British Railways Standard Steam Locomotives: vol 3 Tank Engine Classes . Railway Correspondence and Travel Society (RCTS), 2007, ISBN 978-0-901115-77-5 .
Individual evidence
- ^ A b British Railways Standard Locomotives Swindon Drawings. (PDF) (No longer available online.) Archived from the original on September 13, 2014 ; Retrieved June 20, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Ken Hoole: Trains in Trouble: Vol. 4 . Atlantic Books, Truro 1983, ISBN 0-906899-07-9 , p. 11.
- ↑ The 82045 Steam Locomotive Trust News. Retrieved June 20, 2015 .
