LTSR 79 class | |
---|---|
Power type | Steam |
Designer | Thomas Whitelegg |
Builder | Robert Stephenson & Co. (4), Nasmyth, Wilson & Co. (5), Derby Works (30) |
Serial number | RS 3366–3369, NW 1448–1452 |
Build date | 1909–1930 |
Total produced | 39 |
Configuration | 4-4-2T |
UIC classification | 2'B1 |
Leading wheel diameter |
3 ft 6 in (1.067 m) |
Driver diameter | 6 ft 6 in (1.981 m) |
Trailing wheel diameter |
3 ft 6 in (1.067 m) |
Wheelbase | 30 ft 9 1⁄2 in (9.39 m) |
Length | 39 ft 0 in (11.89 m) |
Locomotive weight | 71.50 long tons (72.65 t) |
Fuel type | Coal |
Fuel capacity | 2.75 long tons (2.79 t) |
Water capacity | 1,800 imp gal (8,200 l; 2,200 US gal) |
Boiler pressure | 170 psi (1.17 MPa) |
Cylinders | Two, outside |
Cylinder size | 19 × 26 in (483 × 660 mm) |
Valve gear | Stephenson |
Tractive effort | 17,390 lbf (77.4 kN) |
Career | LTSR · MR · LMS · BR |
Power class | 3P |
Number in class | 1 January 1923: 4 1 January 1948: 39 |
Withdrawn | 1951–1960 |
Disposition | One preserved, remainder scrapped |
The London, Tilbury and Southend Railway (LTSR) 79 Class is a class of 4-4-2T suburban tank engines. They were designed by Thomas Whitelegg, as a development of the earlier 37 Class.
The four locomotives ordered by the LTSR were numbered 79–82 and were named after places in Essex, near the LTSR route. After absorption by the Midland Railway in 1912, they were renumbered 2176–2179 and their names were removed. The Midland gave them the power classification 3P, and later continued construction; an order for 10 locomotives was delivered in 1923, just after grouping.
LTSR No. |
LTSR Name | Builder | Built | MR No. |
LMS 1923 No. |
LMS 1930 No. |
BR No. |
Withdrawn |
---|---|---|---|---|---|---|---|---|
79 | Rippleside | RS 3366 | 1909 | 2176 | 2176 | 2147 | 41965 | 1951 |
80 | Thundersley | RS 3367 | 1909 | 2177 | 2177 | 2148 | 41966 | 1956 |
81 | Aveley | RS 3368 | 1909 | 2178 | 2178 | 2149 | 41967 | 1952 |
82 | Crowstone | RS 3369 | 1909 | 2179 | 2179 | 2150 | 41698 | 1951 |
In addition to those constructed by the LTSR and MR, 25 were ordered by the London, Midland and Scottish Railway (LMS) – five in 1925, ten in 1927, and a final 10 in 1930. The five ordered in 1925 were built by Nasmyth, Wilson and Company, with the other thirty built by the LMS's Derby Works. In 1947 the LMS assigned them the numbers 1928–1975, to clear their previous numbers for new LMS Fairburn 2-6-4T locomotives, but none of these was applied before nationalisation in 1948, leaving British Railways to apply the numbers 41928–41975.
LMS Lot No. | Year | Builder | LMS No. | BR No. | Withdrawn |
---|---|---|---|---|---|
Lot 5 | 1923 | Derby Works | 2110–2119 | 41928–41937 | 1951–1959 |
Lot 24 | 1925 | NW 1448–1452 | 2120–2124 | 41938–41342 | 1952–1959 |
Lot 48 | 1927 | Derby Works | 2125–2134 | 41943–41952 | 1956–1960 |
Lot 70 | 1930 | Derby Works | 2151–2160 | 41969–41978 | 1955–1959 |
They were later displaced from the LTS Line and found work on ex-Midland lines in the East Midlands.
One, 80 Thundersley has been preserved and is on static display at the Bressingham Steam Museum in Norfolk.
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