Sentetsu Shiki class railcars

The Shiki or Sigeu (Japanese シキ, Korean 시그) class railcars were a class of 3rd class steam railcars of the Chosen Government Railway (Sentetsu). There were two classes of such railcars, one built in Japan and one built in the United Kingdom.

Sentetsu Shiki class
Builder's photo of Shiki1 class steam railcar no. 1.
Type and origin
Power typeSteam
BuilderShiki1: Kisha Seizō
Shiki2: Sentinel-Cammell
Build dateShiki1: 1923
Shiki2: 1929
Total producedShiki1: 4
Shiki2: 2
Specifications
Configuration:
​
 • WhyteShiki1: 2-2-0T+2
Gauge1,435 mm (4 ft 8 1⁄2 in)
Driver dia.Shiki1: 1,370 mm (54 in)
LengthShiki1: 6,936 mm (273.1 in)
(power unit only)
WidthShiki1: 2,796 mm (110.1 in)
HeightShiki1: 4,281 mm (168.5 in)
Adhesive weightShiki1: 16.90 t (16.63 long tons; 18.63 short tons)
Loco weightShiki1: 28.50 t (28.05 long tons; 31.42 short tons)
Fuel typeCoal
Fuel capacityShiki1: 0.83 t (0.82 long tons; 0.91 short tons)
Water capShiki1: 3.61 m3 (127 cu ft)
Firebox:
 • Firegrate area		Shiki1: 0.01 m2 (0.11 sq ft)
Boiler:
​
 • Small tubesShiki1: 258 x 38 mm (1.5 in)
Boiler pressureShiki1: 13.0 kgf/cm2 (185 psi)
Shiki2: 21.0 kgf/cm2 (299 psi)
Heating surfaceShiki1: 44.4 m2 (478 sq ft)
 • Tubes39.2 m2 (422 sq ft)
 • FireboxShiki1: 5.2 m2 (56 sq ft)
Cylinder sizeShiki1: 250 mm × 406 mm (9.8 in × 16.0 in)
Valve gearShiki1: Walschaerts
Loco brakeShiki1: Air brake
Performance figures
Maximum speedShiki1: 75 km/h (47 mph)
Tractive effortShiki1: 20.1 kN (4,500 lbf)
Career
OperatorsChosen Government Railway
Classシキ1 (시그1); シキ2 (시그2)
Number in classShiki1: 4
Shiki2: 2
NumbersShiki1: シキ1-1–シキ1-4
Shiki2: シキ2-1–シキ2-2
First runShiki1: 5 July 1923
Shiki2: 1929
WithdrawnShiki1: 1924 (rebuilt)

Shiki1 class (シキ1)

In 1923, Kisha Seizō of Japan built four steam railcars for Sentetsu, which were essentially a small tank steam locomotive with a 2-2-0 wheel arrangement built onto one end of a passenger carriage. Intended for use for commuter trains on the Gyeongin Line, the railcar pulled two passenger cars in active service. However, performance was far from satisfactory, with many complaints about excessive vibration being received. As a result, in 1924, after barely a year in service, one was scrapped, and the remaining three were converted to 2-2-0 tank locomotives by removing the integrated passenger compartment. A second one was scrapped in 1927, leaving only two locomotives.[1] These two remained in service until at least 1940,[1] but their subsequent fate is unknown.

Shiki2 class (シキ2)

Despite the poor experience with the first steam railcars, Sentetsu imported two geared steam railcars from Sentinel-Cammell in England in 1929. These had a vertical boiler generating superheated steam of 21.0 kgf/cm2 (299 psi) pressure, which fed a single, horizontally mounted, 6-cylinder engine producing 30 hp (22 kW), and had a lightweight body integrated with the underframe. These steam railcars later proved very helpful in designing Sentetsu's first petrol-powered railcars. Both units remained in service until at least 1940, but their subsequent fate is unknown.[1]

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References
  1. Byeon, Seong-u (1999). 한국철도차량 100년사 [Korean Railways Rolling Stock Centennial] (in Korean). Seoul: Korea Rolling Stock Technical Corp.
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