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Federated Malay States classes K1 and K2
later classes 541 and 542
Malaysia | 1927 | 11 produced
Beyer-Peacock variant
Beyer-Peacock variant
flickr/Historical Railway Images

The classes K1 and K2 refer to a total of eleven Pacifics of the Federated Malay States Railways, which were built in 1927 and 1929. They were basically an improved version of the class L which had been delivered by Kitson in 1921. In 1927, Beyer, Peacock & Co. delivered seven and two years later Robert Stephenson & Co. delivered four more.

Robert Stephenson variant
Robert Stephenson variant
flickr/Historical Railway Images

Since the letter K had been occupied by a single other locomotive until recently, the class was initially called “New K”. Later the two series became K1 and K2. During the Second World War, six were probably brought to Siam by the occupiers. The remaining Beyer locomotives were decommissioned in 1958 and 1959, the Stephenson ones only in the 1970s with the end of steam traction in Malaysia.

General
Built1927, 1929
ManufacturerBeyer, Peacock & Co., Robert Stephenson & Co.
Axle config4-6-2 (Pacific) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length56 ft 4 in
Fixed wheelbase9 ft 11 in
Service weight124,320 lbs
Adhesive weight85,680 lbs
Total weight204,512 lbs
Axle load28,560 lbs
Water capacity3,002 us gal
Fuel capacity15,680 lbs (coal)
Power
Power sourcesteam
Estimated power1,075 hp (802 kW)
Optimal speed35 mph
Starting effort19,652 lbf
Power Plant
Driver diameter54 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 17 x 24 in
Boiler
Grate area24.6 sq ft
Firebox area129 sq ft
Tube heating area1,316 sq ft
Evaporative heating area1,445 sq ft
Total heating area1,445 sq ft
Calculated Values
steam locomotive
passenger
last changed: 01/2024
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