Bittern

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Designer
Class
Builder
Year
Original Owner Sir Nigel Gresley
A4
Doncaster
1937
LNER

Wheel Arrangement
Tractive Effort
Weight
Leading Wheel
Driving Wheel
Trailing Wheel 4-6-2
35,450 lbs
160 tons, 15 cwt.
3' 2"
6' 8"
3' 8"

Length
Boiler Pressure
Flue and tube area
Firebox area
Superheater area
Grate area 71' .375"
250 psi
2,345.1 ft²
231.2 ft²
748.9 ft²
41.25 ft²

Cylinders - number
Bore x Stroke
Valve gear
Coal capacity
Water capacity 3
18½" x 26"
Walschaerts
8 tons
5,000 gallons