The Great Western Railway (GWR) 2251 Class was a class of 0-6-0 steam tender locomotive designed for medium-powered freight. They were introduced in 1930 as a replacement for the earlier Dean Goods 0-6-0s and built up to 1948. In service they were colloquially known simply as ‘Colletts’.

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Lighting effects for lamps and firebox
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Changeable numbers and shed plates
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Changeable chimney and safety valve bonnets
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Custom lamp system, allowing automatic setting of headcodes depending on the train class (See below for further details)
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Realistic physics
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Loco information and Quick drives
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Particle steam effects: Sanders, cylinder cocks, safety valves, injectors, chimney sparks. Main smoke effect changes with firing efficiency
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GWR unlined, BR plain and lined black, lined green liveries
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Fully animated cab, with opening windows and changeable crew seats
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Full sound set created from recordings of a preserved example, expertly tuned to the locomotive by Steam Sounds Supreme
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3 scenarios supplied for the Rivera in the 1950s route (TS2016)
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Power Classification: 3MT
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Build Date: 1930-1948
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Total Built: 120
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Wheel Arrangement: 0-6-0
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Length: 53 feet 8.25 inches
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Weight: 43 tons 8 cwt
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Number of Cylinders: 2
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Cylinder Size: 17.5inch x 24 inch
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Coal Capacity:5 tons 0 hundredweight
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Water Capacity: 3,500 imp gal
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Boiler Pressure: 200psi
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Driving Wheel Diameter: 5 Feet 2 inch
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Tractive Effort:20,155 lbs
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Designer: Charles Collett