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Description
The discussion to rebuild Emma into a well tank was taken after her initial trials had been completed. As she lacked the power to pull mainline trains it was thought that the considerably more compact frame which could be achieved with a well tank would make rather fitting for lite branchline or commuter trains. She did prove to work a lot better under her new guise but the decision to give her an early retirement was still made. She was put into a shed for about a year before she was pulled back into wartime service. She survived the war and was once more put into storage, only occasionally steam to pull excursion trains. When the designer was asked why he designed the engine as a 4-2-0 instead of a more practical 0-4-0 or 2-4-0 or even an old fashioned 2-2-2 he simply responded, ‘that’s a good question’.

Dimensions
UIC: 2’A n2vtP
Length of Buffers: 5 825 mm
Width: 2 300 mm
Height: 3 400 mm
Wheelbase: 3 315 mm
Rigid wheelbase: 2 570 mm
Gauge: 1 000 mm

Driving wheel Ø: 1.400 mm
Running wheel Ø: 800 mm
Left, high pressure cylinder Ø: 270 mm
Right, low pressure cylinders Ø: 405 mm
Stroke: 480 mm

Boiler
Working pressure: 10 Bar
Boiler Ø: 1 150 mm
Length: 2 130 mm
Grate area: 0,468 m²
Evaporative surface: 52,8 m²
Steam output: 2 375 kg/h
Coal: 234 kg/h

Speed and Power - Compound
Tractive effort: 16,5 kN
SJR power classification: Unclassified
Top speed: 110 km/h
Service speed: 75 km/h
Maximum effect 31,4 km/h: 144 kW
Max load (0,0˚ incline): 470 ton
Max load (0,6˚ incline): 170 ton
Subtract 18 for possible train weight

Speed and Power - Simple Expansion
Tractive effort: 24,8 kN
SJR power classification: Unclassified
Maximum effect 16,2 km/h: 112 kW
Max load (0,0˚ incline): 708 ton
Max load (0,6˚ incline): 260 ton
Subtract 18 for possible train weight

Fuel
Coal cap: 0,872 m³ = 414 kg
Water cap: 858 l

Weight
6 730 kg/driving axle
Service weight: 18 022 kg

Description
The discussion to rebuild Emma into a well tank was taken after her initial trials had been completed. As she lacked the power to pull mainline trains it was thought that the considerably more compact frame which could be achieved with a well tank would make rather fitting for lite branchline or commuter trains. She did prove to work a lot better under her new guise but the decision to give her an early retirement was still made. She was put into a shed for about a year before she was pulled back into wartime service. She survived the war and was once more put into storage, only occasionally steam to pull excursion trains. When the designer was asked why he designed the engine as a 4-2-0 instead of a more practical 0-4-0 or 2-4-0 or even an old fashioned 2-2-2 he simply responded, ‘that’s a good question’.

Dimensions
UIC: 2’A n2vtP
Length of Buffers: 5 825 mm
Width: 2 300 mm
Height: 3 400 mm
Wheelbase: 3 315 mm
Rigid wheelbase: 2 570 mm
Gauge: 1 000 mm

Driving wheel Ø: 1.400 mm
Running wheel Ø: 800 mm
Left, high pressure cylinder Ø: 270 mm
Right, low pressure cylinders Ø: 405 mm
Stroke: 480 mm

Boiler
Working pressure: 10 Bar
Boiler Ø: 1 150 mm
Length: 2 130 mm
Grate area: 0,468 m²
Evaporative surface: 52,8 m²
Steam output: 2 375 kg/h
Coal: 234 kg/h

Speed and Power - Compound
Tractive effort: 16,5 kN
SJR power classification: Unclassified
Top speed: 110 km/h
Service speed: 75 km/h
Maximum effect 31,4 km/h: 144 kW
Max load (0,0˚ incline): 470 ton
Max load (0,6˚ incline): 170 ton
Subtract 18 for possible train weight

Speed and Power - Simple Expansion
Tractive effort: 24,8 kN
SJR power classification: Unclassified
Maximum effect 16,2 km/h: 112 kW
Max load (0,0˚ incline): 708 ton
Max load (0,6˚ incline): 260 ton
Subtract 18 for possible train weight

Fuel
Coal cap: 0,872 m³ = 414 kg
Water cap: 858 l

Weight
6 730 kg/driving axle
Service weight: 18 022 kg