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Description
Lore
As train weights continued to grow so did the need for larger engines to haul the trains. The Knut class’s most notable flaw was their small steaming capacity. To remedy this engineers built a boiler with a large and heavy firebox which they placed between the engines driving wheels for stability. To support the rest of the boiler a 2 axel bogie of the same design used for the Bo class was used, this resulted in an engine of similar strength but greater stamina than their forebears. The Alistar class was the start of a long line of Northeyan eight-wheelers which for a long time was the most numerous type of engine running on its rails.

Dimensions
UIC: 2’B n2G
Length over Buffers: 6 700 mm
Width: 1 750 mm
Height: 3 000 mm
Wheelbase: 2 885 mm
Rigid wheelbase: 2 535 mm
Driving wheel Ø: 1 069 mm
Running wheel Ø: 508 mm
Cylinder Ø: 250 mm
Stroke: 400 mm
Gauge: 1 069 mm

Boiler
SJR boiler class: w510
Barrel Ø: 820 mm
Boiler Ø: 970 mm
Barrel length: 1 400 mm
Tubes: 56 x 49 mm
Fire grate: 0,32 m²
Evaporation surface: 19,2 m²
Steam output: 960 kg/h
Coal: 160 kg/h
Working pressure: 5 Bar

Speed and Power
Tractive effort: 26,7 kN
Top speed: 84 km/h
Service speed: 42 km/h
Effect 11,7 km/h: 87,2 kW
Can fully loaded start an 180 ton train on an 1,0˚ incline

Weight
Adhesive weight: 10 920 kg
Engine weight: 17 470 kg

Tender
Wet weight: 3 090 kg
Dry weight: 1 390 kg
Coal cap: 0,445 m³ = 380 kg
Water cap: 1,32 m³
Wheel Ø: 639 mm
Wheelbase: 1 006 mm

Description
Lore
As train weights continued to grow so did the need for larger engines to haul the trains. The Knut class’s most notable flaw was their small steaming capacity. To remedy this engineers built a boiler with a large and heavy firebox which they placed between the engines driving wheels for stability. To support the rest of the boiler a 2 axel bogie of the same design used for the Bo class was used, this resulted in an engine of similar strength but greater stamina than their forebears. The Alistar class was the start of a long line of Northeyan eight-wheelers which for a long time was the most numerous type of engine running on its rails.

Dimensions
UIC: 2’B n2G
Length over Buffers: 6 700 mm
Width: 1 750 mm
Height: 3 000 mm
Wheelbase: 2 885 mm
Rigid wheelbase: 2 535 mm
Driving wheel Ø: 1 069 mm
Running wheel Ø: 508 mm
Cylinder Ø: 250 mm
Stroke: 400 mm
Gauge: 1 069 mm

Boiler
SJR boiler class: w510
Barrel Ø: 820 mm
Boiler Ø: 970 mm
Barrel length: 1 400 mm
Tubes: 56 x 49 mm
Fire grate: 0,32 m²
Evaporation surface: 19,2 m²
Steam output: 960 kg/h
Coal: 160 kg/h
Working pressure: 5 Bar

Speed and Power
Tractive effort: 26,7 kN
Top speed: 84 km/h
Service speed: 42 km/h
Effect 11,7 km/h: 87,2 kW
Can fully loaded start an 180 ton train on an 1,0˚ incline

Weight
Adhesive weight: 10 920 kg
Engine weight: 17 470 kg

Tender
Wet weight: 3 090 kg
Dry weight: 1 390 kg
Coal cap: 0,445 m³ = 380 kg
Water cap: 1,32 m³
Wheel Ø: 639 mm
Wheelbase: 1 006 mm