The reference for locomotives and railcars


Page views since 2023-01-26: 261146
Federated Malay States class L
Malayan State Railway class 531
Malaysia | 1921 | 20 produced
flickr/Historical Railway Images

To eliminate the need for double-heading express trains, the FMSR ordered 20 Pacifics from Kitson, which were delivered in 1921. They had a superheated boiler with Belpaire firebox and were among the more powerful meter gauge Pacifics.

During World War II, the Japanese brought five of the locomotives to Burma, but they returned after the war ended. They soon became class 531 and some remained in service until 1971. The 531.01 was the only one that was preserved and is now in front of the National Museum in Kuala Lumpur.

ManufacturerKitson & Co.
Axle config4-6-2 (Pacific) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length56 ft 4 in
Fixed wheelbase9 ft 5 in
Service weight198,016 lbs
Adhesive weight80,640 lbs
Total weight124,544 lbs
Axle load26,880 lbs
Water capacity3,002 us gal
Fuel capacity13,552 lbs (coal)
Power sourcesteam
Estimated power1,000 hp (746 kW)
Optimal speed32 mph
Starting effort19,652 lbf
Power Plant
Driver diameter54 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 17 x 24 in
Grate area24.3 sq ft
Evaporative heating area1,485 sq ft
Total heating area1,485 sq ft
Calculated Values
steam locomotive
last changed: 03/2024

We use cookies to save the following settings:

  • selected navigation structure
  • selected language
  • preferred units
  • spelling of railway company names

If you refuse the use of cookies, the settings will only be retained for the current session and will be reset to the default values the next time you visit the site.

Display of units

Here you can set the desired unit system for the technical data.

  • Metric: Lengths in meters, weights in tonnes, and volumes in cubic meters
  • Imperial (UK): Lengths in feet/inches, weights in long tons and volumes in imperial gallons
  • Imperial (US): Lengths in feet/inches, weights in pounds, and volumes in US gallons
  • Individual: Depends on the country of origin of each locomotive
Operator names

Here you can set the display of railway company names.

  • Short: Abbreviation or short form of the name
  • Standard: commonly used name, partially translated to English
  • Complete: full name in local language