Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 49, p. 200. Works numbers were 38699-38710 in November 1912.
The 45 sq ft (4.18 sq m) in the combustion chamber contributed more than 20% to the direct heating surface.
Data from Wikipedia's "Sentetsu Tehoro-class locomotive", last accessed at [] on 1 March 2020. Gyeongseong Works produced 2 prototypes and 13 production machines. Hitachi's Kasato works manufactured the most of the three Japanese builders with Kawasaki and Mitsubishi adding 13 others.
Data from "Sentetsu Tehosa-class locomotiv" in Wikipedia at [], last accessed 13 July 2023.
Principal Dimensions by Steve Llanso of Sweat House Media | |||
---|---|---|---|
Class | Tehoi | Tehoro | Tehosa |
Locobase ID | 14221 | 20723 | 21139 |
Railroad | Chosen Government | Chosen Government | Chosen Government |
Country | Korea | Korea | Korea |
Whyte | 4-6-0 | 4-6-0 | 4-6-0 |
Number in Class | 12 | 95 | 9 |
Road Numbers | 231-242 | 222-230/651-659 | |
Gauge | Std | Std | Std |
Number Built | 12 | 95 | 9 |
Builder | Baldwin | several | Alco-Brooks |
Year | 1912 | 1927 | 1914 |
Valve Gear | Walschaert | Walschaert | Stephenson |
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | 13.50 / 4.11 | 13.48 / 4.11 | |
Engine Wheelbase (ft / m) | 24.35 / 7.42 | 24.34 / 7.42 | |
Ratio of driving wheelbase to overall engine wheelbase | 0.55 | 0.55 | |
Overall Wheelbase (engine & tender) (ft / m) | 53.17 / 16.21 | 44.69 / 13.62 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 37,334 / 16,934 | ||
Weight on Drivers (lbs / kg) | 112,000 / 50,802 | 111,999 / 50,802 | |
Engine Weight (lbs / kg) | 150,000 / 68,039 | 170,197 / 77,200 | 148,001 / 67,132 |
Tender Loaded Weight (lbs / kg) | 85,000 / 38,555 | 119,049 / 54,000 | 95,813 / 43,460 |
Total Engine and Tender Weight (lbs / kg) | 235,000 / 106,594 | 289,246 / 131,200 | 243,814 / 110,592 |
Tender Water Capacity (gals / ML) | 3984 / 15.09 | 5280 / 20 | 3986 / 15.10 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.60 / 6 | 10.50 / 10 | 6.50 / 5.90 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 62 / 31 | 62 / 31 | |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 66 / 1676 | 66.10 / 1680 | 66.10 / 1680 |
Boiler Pressure (psi / kPa) | 180 / 12.40 | 178.40 / 12.30 | 182.70 / 12.60 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 | 20.87" x 25.98" / 530x660 | 20.08" x 25.98" / 510x660 |
Tractive Effort (lbs / kg) | 24,109 / 10935.67 | 25,960 / 11775.27 | 24,611 / 11163.38 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.65 | 4.55 | |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 264 - 2" / 51 | 150 - 2.008" / 51 | 210 - 2.244" / 57 |
Flues (number - dia) (in / mm) | 24 - 5.394" / 137 | 24 - 5.394" / 137 | |
Flue/Tube length (ft / m) | 12.25 / 3.73 | 15.16 / 4.62 | 15.09 / 4.60 |
Firebox Area (sq ft / m2) | 180 / 16.72 | 129.17 / 12 | 129.17 / 12 |
Grate Area (sq ft / m2) | 40 / 3.72 | 46.93 / 4.36 | 47.25 / 4.39 |
Evaporative Heating Surface (sq ft / m2) | 1862 / 172.98 | 1838 / 170.80 | 1849 / 171.80 |
Superheating Surface (sq ft / m2) | 498 / 46.30 | 505 / 46.90 | |
Combined Heating Surface (sq ft / m2) | 1862 / 172.98 | 2336 / 217.10 | 2354 / 218.70 |
Evaporative Heating Surface/Cylinder Volume | 196.96 | 178.68 | 194.18 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 7200 | 8372 | 8633 |
Same as above plus superheater percentage | 7200 | 10,130 | 10,445 |
Same as above but substitute firebox area for grate area | 32,400 | 27,883 | 28,555 |
Power L1 | 5785 | 13,309 | 14,880 |
Power MT | 341.62 | 878.71 |