Sanyo 2-4-2 Locomotives in Japan
Class Details by Steve Llanso of Sweat House Media
Class Class 8 K Minami (Locobase 12152)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 19, p. 254 . See also "JGR Class 5060" in Steam Locomotives, Locomotive Wiki at [
], last accessed 21 January 2024.. Works number was 14239 in June 1895.
Double-ender passenger engine delivered as a Vauclain compound with 8" (203 mm) piston valves.
Based on the Locomotive Wiki description, this locomotive remained a compound until its retirement in 1919.
Class unknown (Locobase 5413)
Data from "A Tank Locomotive for Japan," Railroad & Engineering Journal, Volume 64, No 12 (December 1890), p. 576. Works numbers were 1298-1301 in 1890.
Typical small British tank engine of late 19th-century vintage. Boiler pressure is an estimate.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | Class 8 K Minami | unknown |
| Locobase ID | 12152 | 5413 |
| Railroad | Sanyo | Sanyo |
| Country | Japan | Japan |
| Whyte | 2-4-2 | 2-4-2T |
| Number in Class | 1 | 4 |
| Road Numbers | 39/5060 | |
| Gauge | 3'6" | 3'6" |
| Number Built | 1 | 4 |
| Builder | Burnham, Williams & Co | Vulcan Foundry |
| Year | 1895 | 1890 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 12 / 3.66 | |
| Engine Wheelbase (ft / m) | 19.67 / 6 | |
| Ratio of driving wheelbase to overall engine wheelbase | 0.61 | |
| Overall Wheelbase (engine & tender) (ft / m) | 19.67 / 6 | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 49,000 / 22,226 | |
| Engine Weight (lbs / kg) | 78,400 / 35,562 | |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 2400 / 9.09 | 1000 / 3.79 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 41 / 20.50 | |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 60 / 1524 | 52 / 1321 |
| Boiler Pressure (psi / kPa) | 180 / 1240 | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 22" / 254x559 | 14" x 20" / 356x508 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 | |
| Tractive Effort (lbs / kg) | 8336 / 3781.15 | 8971 / 4069.18 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.88 | |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 161 - 1.75" / 44 | |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 11 / 3.35 | |
| Firebox Area (sq ft / m2) | 86.90 / 8.08 | 70 / 6.51 |
| Grate Area (sq ft / m2) | 13.50 / 1.25 | 12 / 1.12 |
| Evaporative Heating Surface (sq ft / m2) | 889 / 82.62 | 724 / 67.29 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 889 / 82.62 | 724 / 67.29 |
| Evaporative Heating Surface/Cylinder Volume | 444.53 | 203.18 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 2430 | 1680 |
| Same as above plus superheater percentage | 2430 | 1680 |
| Same as above but substitute firebox area for grate area | 15,642 | 9800 |
| Power L1 | 4122 | 3657 |
| Power MT | 370.92 | |