Chosen Government Railway Tehoshi class (テホシ)
Korean State Railway Tŏunŏ class (더우너)
Tehoshi-class locomotive number 238 as built in 1913.
Type and origin
Power typeSteam
BuilderALCo
Build date1913
Total produced4
Specifications
Configuration:
​
 • Whyte4-6-0
Gauge1,435 mm (4 ft 8+1⁄2 in)
Driver dia.1,680 mm (66 in)
Length18,625 mm (61 ft 1.3 in)
Width2,972 mm (9 ft 9.0 in)
Height4,232 mm (13 ft 10.6 in)
Loco weight68.40 t (67.32 long tons)
Tender weight43.03 t (42.35 long tons)
Fuel capacity6.00 t (5.91 long tons)
Water cap.15,100 L (4,000 US gal)
Firebox:​
 • Grate area3.72 m2 (40.0 sq ft)
Boiler:
​
 • Small tubes264 x 57 mm (2.2 in)
Boiler pressure12.6 kgf/cm2 (179 psi)
Heating surface174.80 m2 (1,881.5 sq ft) ​
 • Tubes156.50 m2 (1,684.6 sq ft)
 • Firebox12.00 m2 (129.2 sq ft)
Cylinders1
Cylinder size510 mm × 660 mm (20 in × 26 in)
Valve gearWalschaerts
Performance figures
Maximum speed95 km/h (59 mph)
Tractive effort111.0 kN (25,000 lbf)
Career
OperatorsChosen Government Railway
Korean State Railway
ClassSentetsu: テホシ
KSR: 더우너
Number in class4
NumbersSentetsu: テホシ1–テホシ4
KSR: 더우너1–더우너4
Delivered1913

The Tehoshi-class (テホシ) locomotives were a class of steam tender locomotives of the Chosen Government Railway (Sentetsu) with 4-6-0 wheel arrangement.[1] The "Teho" name came from the American naming system for steam locomotives, under which locomotives with 4-6-0 wheel arrangement were called "Ten Wheeler".[2]

After the Liberation of Korea, of the 178 surviving locomotives of all Teho classes - including six previously owned by private railway companies - 106 went to the Korean National Railroad in the South, and 72 to the Korean State Railway in the North.[3]

Description

Following the brief excursion to ALCo for the Tehosa class, Sentetsu once again returned to Baldwin for the next order of 4-6-0s. This was a small lot of four locomotives built in 1913, initially numbered 235–238 and intended for local freight trains, and had a lower profile than the previous Baldwin designs.[1] They were renumbered 661–664 in 1918, finally being designated テホシ (Tehoshi) class in the 1938 general renumbering, numbered テホシ1 through テホシ4.[1]

Postwar

Korean State Railway 더우너 (Tŏunŏ) class

All four locomotives of the class went to the North after the partition, where they were designated 더우너 (Tŏunŏ) class by the Korean State Railway and numbered 더우너1 through 더우너4, but little is known of their service lives and subsequent fates.

Construction

Sentetsu running numberPostwar
1914–19181918–19381938–1945OwnerNumberBuilderYearNotes
235テホ661テホシ1KSR더우너1ALCo1913
236テホ662テホシ2KSR더우너2ALCo1913
237テホ663テホシ3KSR더우너3ALCo1913
238テホ664テホシ4KSR더우너4ALCo1913
Total4

References

  1. 1 2 3 Byeon, Seong-u (1999). 한국철도차량 100년사 [Korean Railways Rolling Stock Centennial] (in Korean). Seoul: Korea Rolling Stock Technical Corp.
  2. ↑ Colvin, Fred H. (1906). The railroad pocket-book: a quick reference cyclopedia of railroad information. New York, Derry-Collard; London, Locomotive Publishing Company (US-UK co-edition). p. L‑9.
  3. ↑ "Korean National RR TW-1 4-6-0". donsdepot.donrossgroup.net.
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