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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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‘G’ Class
Vital Statistics |
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| Official Name |
‘G’ class |
| Nickname |
‘Piano-front ‘G’ |
| Water & Coal Storage |
Tender |
| Water Capacity |
3000 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 |
‘G’ — 160 psi
‘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 20½in diameter; 24in stroke |
| Weight |
56 tons 6 cwt |
| Designer |
Mr. G Whale |
| Number in Class |
‘G’ |
| Lifetime |
1906—present |
These were rebuilt from ‘B’ class 
0-8-0’s with only the outside cylinders removed,
the original low-pressure cylinders being retained and the pressure
reduced to 160 psi to keep tractive effort approximately the same.
The bulky front covers were retained, so enginemen called them the
‘Piano-front ‘G’s’. Sanding was added to the
second drivers, but the boxes were smaller. Webb or Whale tenders
could be fitted.
Thirty-two had been converted by 1917 but the
superheated versions were found to be clearly superior so later
‘B’s were converted direct to ‘G1’ class .
View the Genealogy of the 0-8-0 Design.
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