Imperial Government Railways 2-8-0T Locomotives in Japan
Class Details by Steve Llanso of Sweat House Media
Class unknown (Locobase 21138)
Data from K Ohta, Draughtsman, "8 WC Engine Designed by R F Trevithick MICE MIME" diagram, May 1900.at [
]-engine?, last accessed 24 June 2023.
Richard Francis Trevithick designed this tender-tank Consolidation, which carried 580 Imperial gallons (696 US gallons) in its small side tanks and 1,850 Imp gal (2,220 US gal) in the tender.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 21138 |
| Railroad | Imperial Government Railways (JGR) |
| Country | Japan |
| Whyte | 2-8-0TT |
| Number in Class | |
| Road Numbers | |
| Gauge | 3'6" |
| Number Built | |
| Builder | |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14 / 4.27 |
| Engine Wheelbase (ft / m) | 21.33 / 6.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 48 / 14.63 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | / 42,547 |
| Engine Weight (lbs / kg) | / 47,287 |
| Tender Loaded Weight (lbs / kg) | 60,750 / 27,556 |
| Total Engine and Tender Weight (lbs / kg) | 60,750 / 74,843 |
| Tender Water Capacity (gals / ML) | 2916 / 11.05 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.75 / 4.20 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 43 / 1092 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 22" / 457x559 |
| Tractive Effort (lbs / kg) | 25,362 / 11504.02 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | / 3.96 |
| Firebox Area (sq ft / m2) | 108 / 10.03 |
| Grate Area (sq ft / m2) | 18.50 / 1.72 |
| Evaporative Heating Surface (sq ft / m2) | 1186 / 110.18 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1186 / 110.18 |
| Evaporative Heating Surface/Cylinder Volume | 183.04 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3330 |
| Same as above plus superheater percentage | 3330 |
| Same as above but substitute firebox area for grate area | 19,440 |
| Power L1 | 3436 |
| Power MT | |