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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
Ex GCR
1919 — ‘MM’ class
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‘G1’ Class
Vital Statistics |
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| 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 
0-8-0’s had been converted to ‘G’ class by 1917 but the
superheated 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 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 , becoming the ‘G2’ class variation. Finally
improvements to braking and valve 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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