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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

‘G1’ Class

Vital Statistics

Official Name ‘G1’, ‘G2’ and ‘G2a’ class
Nickname G1 & G2 — ‘Super D’s’
Water & Coal Storage Tender
Water Capacity 2000 gallon
Coal Capacity 5 tons
Wheel Arrangement 0-8-0
Driven Wheels Eight 4ft 5½in wheels
3rd pair flangeless
Carrying Wheels none
Wheelbase 5ft 9in + 5ft 9in + 5ft 9in
Boiler 5ft 2in diameter; 14ft 6in long
Boiler Pressure ‘G1’ — 160 psi superheated
‘G2’ & ‘G2a’ — 175 psi superheated
Grate Area 23.6 sq.ft.
Tubes 276
Total Heating Area 2,043.25 sq.ft.
Cylinders Two inside 19½in diameter; 24in stroke
Weight 56 tons 6 cwt
Designer Mr. G Whale
Number in Class ‘G1’ — 449; ‘G2’ — 60; ‘G2a’ — 327
Lifetime 1912—present

Thirty-two ‘B’ class Explain '‘B’ Class 0-8-0 Locomotive class' 0-8-0’s had been converted to ‘G’ class Explain '‘G’ 0-8-0 Locomotive Class' by 1917 but the superheated Explain 'Super Heated Steam' versions were found to be clearly superior so later ‘B’s were converted direct to ‘G1’ class. Twenty-six were sent to France to be used by the ROD Explain 'Railway Operating Division' in World War I, all being later returned so they probably did not go too near the trenches!

In 1912 the ‘G1’ class were produced with superheating and 8in piston valves then in 1921 boiler pressure was increased to 175 psi Explain 'PSI (Pounds per Square Inch)', becoming the ‘G2’ class variation. Finally improvements to braking and valve motion Explain 'Motion' were launched in the ‘G2a’ class in 1935, the last of which was finally scrapped just four years before the end of steam on British Railways, in 1964. In latter days they were all generally known as ‘Super D’s’, being a ‘D’ class superheated.

No.9395 is fortunately still with us, being preserved in the National Collection.

View the Genealogy of the 0-8-0 Design.

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