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Mr. J. Ramsbottom

1858 — DX Goods
1863 — 4ft Shunter
1870 — Special Tank

Mr. F.W. Webb

1873 — 17in Coal Engine
1880 — 18in Goods
1881 — Special DX
1881 — Coal Tanks
1893 — ‘A’ class
1894 — Crane Tank
1896 — Dock Tank
1901 — ‘B’ class
1903 — 1400 Class

Mr. G. Whale

1904 — ‘C’ class
1904 — ‘E’ class
1906 — ‘D’ class
1906 — ‘F’ class
1906 — ‘G’ class
1912 — ‘G1’ class
1906 — 19in Express Goods

Mr. C.J. Bowen Cooke

1911 — 1185 class

Capt. H.P.M. Beames

1923 — 380 class


1919 — ‘MM’ class

Special Tank

Vital Statistics

Official Name 4ft 3in Six wheeled Coupled Special Tank
Nickname Special Tank
Water & Coal Storage Side tanks and Bunker
Water Capacity 600 gallon
Coal Capacity 1 ton 10 cwt
Wheel Arrangement 0-6-0
Driven Wheels Six 4ft 5½in wheels
Carrying Wheels none
Wheelbase 7ft 3in + 8ft 3in
Total Wheelbase 15ft 6in
Boiler 4ft 0¾in diameter; 10ft 5¼in long
Boiler Pressure 150 psi
Grate Area 15 sq.ft.
Tubes 186
Total Heating Area 1,069 sq.ft.
Cylinders Two inside 17in diameter; 24in stroke
Weight in full working order 34 tons 10 cwt
Designer Mr. J. Ramsbottom
Number in Class 278
Lifetime 1870—1959

Mr. Ramsbottom had twenty saddle-tanks Explain 'Saddle Tank' built for shunting Explain 'Shunting' based on the ‘DX’ design, to which Mr. Webb Explain 'Webb, Francis William (1836—1906)' added a further 235, fitting his own standard features in the same way as the ‘DX’ conversions. They were also widely used for station pilot Explain 'Station Pilot' and empty carriage stock workings. Fuel supply was more limited than the Coal Tanks Explain 'Coal Tank 0-6-2T Locomotive Class', resulting in a lower range.

The first ‘Special Tanks’ had frames Explain 'Frame' of iron but when Webb Explain 'Webb, Francis William (1836—1906)' introduced steel frames they were lighter yet stronger, so they could be less deep. Most retained the sloping Ramsbottom smokebox Explain 'Smoke Box' front until LMS days (after 1922), and unusually there was never any lining on the back of the bunker Explain 'Bunker'. Originally built only with weather boards Explain 'Weather Board', a few received cabs by the 1890’s and many more by 1912—16.

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