The Pashiko class (パシコ) locomotives were a group of steam tender locomotives of the Chosen Government Railway (Sentetsu) with 4-6-2 wheel arrangement. The "Pashi" name came from the American naming system for steam locomotives, under which locomotives with 4-6-2 wheel arrangement were called "Pacific".
4-6-2 steam locomotive
Chosen Government Railway Pashiko class (パシコ) Korean National Railroad Pasi5 class (바시5) Korean State Railway Pasio class (바시오)
Sentetsu Pashiko class locomotives パシコ7 and パシコ13
Type and origin
Power type
Steam
Builder
Gyeongseong Works, Kawasaki
Build date
1939 Gyeongseong (2) 1940–1944 Kawasaki (40)
Total produced
40
Specifications
Configuration:
•Whyte
4-6-2
Gauge
1,435mm (4ft8+1⁄2in)
Driver dia.
1,850mm (73in)
Length
23,756mm (77ft 11.3in)
Width
3,170mm (10ft 5in)
Height
4,700mm (15ft 5in)
Loco weight
112.00t (110.23 long tons)
Tender weight
84.00t (82.67 long tons)
Fuel capacity
14.0t (13.8 long tons)
Water cap.
35,000L (9,200USgal)
Firebox: •Firegrate area
6.20m2 (66.7sqft)
Boiler:
•Small tubes
75 x 51mm (2.0in)
•Large tubes
120 x 90mm (3.5in)
Boiler pressure
15.0kgf/cm2 (213psi)
Heating surface
280.00m2 (3,013.9sqft)
•Tubes
252.60m2 (2,719.0sqft)
•Firebox
27.40m2 (294.9sqft)
Superheater:
•Heating area
113.70m2 (1,223.9sqft)
Cylinders
2
Cylinder size
580mm ×660mm (23in ×26in)
Valve gear
Walschaerts
Performance figures
Maximum speed
110km/h (68mph)
Tractive effort
162.0kN (36,400lbf)
Career
Operators
Chosen Government Railway Korean National Railroad Korean State Railway
Class
Sentetsu: パシコ KNR: 바시5 KSR: 바시오
Number in class
Sentetsu: 42
Numbers
Sentetsu: パシコ1–パシコ42
Delivered
1939–1944
In all, Sentetsu owned 144 locomotives of all Pashi classes, of which 141 survived the war; of these, 73 went to the Korean National Railroad in South Korea and 68 to the Korean State Railway in North Korea.[1]
Description
KNR Pasi5-23 on display at the Korean Railway Museum.
Sentetsu designed the Pashiko class as a successor to the Pashishi class, with the first example, パシコ1, being delivered from Sentetsu's Gyeongseong Works in October 1939, and the second following a month later. They were not only the largest of all Sentetsu passenger locomotives in size, but at 159.8t (157.3 long tons) they were the heaviest of all Sentetsu locomotives of any type, and with a maximum speed of 110km/h (68mph) they were the fastest as well.[2]
Like the Matei class, which was the largest of all Sentetsu's freight locomotives, the Pashiko class had a firegrate area of 6.2m2 (67sqft), and like the Pashishi and its related classes, it was designed to use lignite abundant in Korea, which is less efficient than anthracite and thus requires a large heating area, and featured a combustion chamber firebox and a conical boiler. Unlike the other Pashi classes, which had drivers of 1,750mm (69in) diameter, the Pashiko had even larger drivers of 1,850mm (73in).[2]
Timeline of Pashiko production for Sentetsu
Year
Running Number
Builder
Total
Oct 1939
パシコ1
Gyeongseong
1
Nov 1939
パシコ2
Gyeongseong
2
1940
パシコ3–パシシ12
Kawasaki
10
1941
パシコ13–パシシ22
Kawasaki
10
1942
パシコ23–パシシ35
Kawasaki
13
1943
パシコ36–パシシ40
Kawasaki
5
1944
パシコ41–パシシ42
Kawasaki
2
Builder totals
Gyeongseong
2
Kawasaki
40
Total
42
Postwar
After the Liberation and partition of Korea, they were divided between North and South, but the specifics of which engine went where are unclear.
Korean National Railroad 파시5 (Pasi5) class
At least eighteen Pashiko class engines went south to the Korean National Railroad, where they became 파시5 (Pasi5) class, and they were widely used on passenger trains until at least 1967.[3] 파시5-5 was partially streamlined and given a special livery of black with white and red trim in the mid-1950s by the US Army Transportation Corps railway crews.[4]
Known KNR 파시5-class locomotives
KNR number
Sentetsu number
Builder
Year
Notes
파시5-1
パシコ1
Gyeongseong
1939
파시5-2
パシコ2
Gyeongseong
1939
파시5-3
パシコ3
Kawasaki
1940
파시5-4
パシコ4
Kawasaki
1940
파시5-5
パシコ5
Kawasaki
1940
Semi-streamlined by USATC crews after the Korean War.
파시5-11
パシコ11
Kawasaki
1940
파시5-12
パシコ12
Kawasaki
1940
Derelict by 1953.
파시5-16
パシコ16
Kawasaki
1941
파시5-18
パシコ18
Kawasaki
1941
파시5-19
パシコ19
Kawasaki
1941
파시5-20
パシコ20
Kawasaki
1941
파시5-21
パシコ21
Kawasaki
1941
파시5-23
パシコ23
Kawasaki
1942
Works number 2649. Preserved at the Korean Railway Museum.
파시5-24
パシコ24
Kawasaki
1942
파시5-26
パシコ26
Kawasaki
1942
파시5-30
パシコ30
Kawasaki
1942
파시5-31
パシコ31
Kawasaki
1942
파시5-37
パシコ37
Kawasaki
1943
Still in service in 1968.
파시5-38
パシコ38
Kawasaki
1943
Korean State Railway 바시오 (Pasio) class
The locomotives taken over by the Korean State Railway were initially designated 바시오 (Pasio) class. The total number, their service lives and subsequent fates are unknown, but they were probably retired by the end of the 1960s.
References
"North and South Korea Steam Locomotives". 20 April 2004. Archived from the original on 20 April 2004.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
Byeon, Seong-u (1999). 한국철도차량 100년사[Korean Railways Rolling Stock Centennial] (in Korean). Seoul: Korea Rolling Stock Technical Corp.
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