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Federated Malay States class H
Malayan State Railway class 501
Malaysia | 1906 | 60 produced
H<sup>2</sup> No. 118
H2 No. 118
flickr/Historical Railway Images

The class H of the Federated Malay States Railway refers to a total of 60 light, meter-gauge Pacifics. The first seven were built by Kitson from November 1906. Others followed from Nasmyth, Wilson & Co., six of which went to the Johore State Railway. While the latter were also handed over to the FMSR, further series were created by Kitson and Robert Stephenson.

Since the later deliveries were somewhat heavier due to stronger frames and had further differences in details, the three series were subsequently named H1, H2 and H3. The H1 were withdrawn between 1929 and 1934. Of the newer machines, many were classified as class 501 by the Malayan Railways in 1946.

General
Built1906-1913
ManufacturerKitson & Co., Nasmyth, Wilson & Co., Robert Stephenson & Co.
Axle config4-6-2 (Pacific) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Wheelbase25 ft 1 in
Fixed wheelbase9 ft 5 in
Total wheelbase48 ft 0 1/2 in
Service weight106,400 lbs
Adhesive weight67,200 lbs
Total weight172,256 lbs
Axle load22,400 lbs
Water capacity2,402 us gal
Fuel capacitycoal
Power
Power sourcesteam
Estimated power550 hp (410 kW)
Optimal speed25 mph
Starting effort14,295 lbf
Power Plant
Driver diameter54 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 15 1/2 x 21 in
Boiler
Grate area18.5 sq ft
Firebox area82.5 sq ft
Tube heating area1,152.5 sq ft
Evaporative heating area1,235 sq ft
Total heating area1,235 sq ft
Calculated Values
steam locomotive
express
last changed: 02/2024
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