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Great Western Railway “Thunderer” and “Hurricane”
Great Britain | 1838
2 produced
“Hurricane”
“Hurricane”
Locomotive Magazine, April 1901

The first 19 locomotives that Brunel had procured in 1938 were partly adventurous designs to reach high speeds. On the one hand there were the “Snake” and “Viper” locomotives from the Haigh foundry, which were brought to higher speeds with a gearbox with a ratio of 2:3 and had the wheel arrangement 2-2-2. Less conventional were the two Hawthorn locomotives developed by Thomas Elliot Harrison, which used two cars to split the boiler and engine.

The first of these was the “Thunderer”, where the boiler and driver's stand were on a three-axle chassis. The cylinders were housed on another, two-axle chassis together with a gearbox with a ratio of 10:27. Here both axles with six feet wheels were driven. The live steam was routed to the engine chassis and the exhaust steam back to the smoke box via elastic pipes.

“Thunderer”
“Thunderer”
Locomotive Magazine, April 1901

The “Hurricane” got rid of the gearbox by increasing the size of the driven wheels to exactly ten feet. For reasons of space, only one axle was driven, which is why two carrying axles were added and the engine unit was thus given the wheel arrangement 2-2-2. Both “Thunderer” and “Hurricane” were only used until December 1939 and their boilers were then used as stationary steam generators and for a freight locomotive. Thanks to the experience with the locomotives, gearboxes and equally divided locomotives were dispensed with in the future and high speeds were achieved in other ways.

VariantThundererHurricane
General
Built1838
ManufacturerR. & W. Hawthorn & Co.
Axle config0-4-0+6 (Four-coupled) 2-2-2+6 (Jenny Lind) 
Gauge7 ft 0 1/4 in (GWR broad gauge)
Dimensions and Weights
Wheelbase7 ft15 ft 9 in
Rigid wheelbase7 ft15 ft 9 in
Adhesive weight26,880 lbs13,440 lbs
Fuel capacitycoal
Boiler
Grate area17 sq ft
Firebox area108 sq ft
Tube heating area516 sq ft
Evaporative heating area624 sq ft
Total heating area624 sq ft
VariantThundererHurricane
Power Plant
Driver diameter72 in120 in
Expansion typesimple
Cylinderstwo, 16 x 20 in
Power
Power sourcesteam
Calculated Values
steam locomotive
express
prototype
split powerplant
Thomas Elliot Harrison
last changed: 01/2022
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