Tokanfu Railway Bureau 4-6-0 Locomotives in Korea


Class Details by Steve Llanso of Sweat House Media

Class 207 (Locobase 13142)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 30, p. 241. Works number was 30962 in May 1907.

When the Japanese gained control of Korea following the Russo-Japanese War of 1904-1905, the Tokanfu (Residency-General) controlled most of the economic activity on the peninsula. Thus they were the nominal buyers of this Ten-wheeler, which differed from the series-production locomotives shown in Locobase 13143.

207 was completed with a combustion chamber possibly to test the merit of such an addition to direct heating surface. The boiler had 48 fewer tubes than the series-production engines. Locobase has not been able to determine what differences this boiler had from the series locomotives.


Class Tehoni (Locobase 13143)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 30, p. 241, Volume 31, p. 74. Works numbers were 30979-30980, 31011-31012, 31089 in June 1907; 32140-32141, 32168-32172, 32206-32207 in November

As noted in Locobase 13142, the Japanese occupation authority (Tokanfu or Residency-General) ordered these engines. The single engine with a smaller boiler and combustion chamber is shown in Locobase 13142. The other 14 were fitted with more standard boilers of larger dimensions.

Alco's Brooks Works continued the class with the 221-230 (works numbers 49236-49244 in December 1910.)

Principal Dimensions by Steve Llanso of Sweat House Media

Class207Tehoni
Locobase ID13142 13143
RailroadTokanfu Railway BureauTokanfu Railway Bureau
CountryKoreaKorea
Whyte4-6-04-6-0
Number in Class114
Road Numbers207208-221
GaugeStdStd
Number Built114
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year19071907
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.50 / 4.1113.50 / 4.11
Engine Wheelbase (ft / m)24.33 / 7.4224.33 / 7.42
Ratio of driving wheelbase to overall engine wheelbase 0.55 0.55
Overall Wheelbase (engine & tender) (ft / m)44.67 / 13.6244.67 / 13.62
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)112,000 / 50,802112,000 / 50,802
Engine Weight (lbs / kg)148,000 / 67,132148,000 / 67,132
Tender Loaded Weight (lbs / kg)80,000 / 36,28780,000 / 36,287
Total Engine and Tender Weight (lbs / kg)228,000 / 103,419228,000 / 103,419
Tender Water Capacity (gals / ML)4000 / 15.154000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)62 / 3162 / 31
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 167666 / 1676
Boiler Pressure (psi / kPa)180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x66020" x 26" / 508x660
Tractive Effort (lbs / kg)24,109 / 10935.6724,109 / 10935.67
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.65 4.65
Heating Ability
Tubes (number - dia) (in / mm)262 - 2" / 51310 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.17 / 3.7115.17 / 4.62
Firebox Area (sq ft / m2)172 / 15.99131.70 / 12.24
Grate Area (sq ft / m2)40 / 3.7240 / 3.72
Evaporative Heating Surface (sq ft / m2)1829 / 169.982580 / 239.78
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1829 / 169.982580 / 239.78
Evaporative Heating Surface/Cylinder Volume193.47272.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation72007200
Same as above plus superheater percentage72007200
Same as above but substitute firebox area for grate area30,96023,706
Power L156326783
Power MT332.58400.55

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