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London, Midland & Scottish Gattatt class 4997
Great Britain | 1927
33 produced
No 4977
No 4977
Bundeena2230
General
Built1927, 1930
ManufacturerBeyer, Peacock & Co.
Axle config2-6-0+0-6-2 (Double Mogul (Garratt)) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length87 ft 10 1/2 in
Rigid wheelbase16 ft 6 in
Total wheelbase79 ft
Service weight333,200 lbs
Adhesive weight259,840 lbs
Axle load45,360 lbs
Water capacity5,404 us gal
Fuel capacity15,680 lbs (coal)
Boiler
Grate area44.5 sq ft
Firebox area183 sq ft
Tube heating area1,954 sq ft
Evaporative heating area2,137 sq ft
Superheater area500 sq ft
Total heating area2,637 sq ft
Power Plant
Driver diameter63 in
Boiler pressure190 psi
Expansion typesimple
Cylindersfour, 18 1/2 x 26 in
Power
Power sourcesteam
Estimated power1,500 hp (1,119 kW)
Optimal speed21 mph
Starting effort45,622 lbf
Calculated Values
steam locomotive
freight
tank locomotive
Garratt
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