Data from "Steam Rail Motor Coach, North Western Ry of India", The Railway Magazine, Volume XII [12] (15 September 1906), p. 155. See also "Rail Motor Cars for the Indian North Western (State) Railway System," The Tramway and Railway World, Volume 19 (5 April 1906), p. 308-309.
This steam motor coach was built during the type's brief period of popularity. Like most such vehicles, the locomotive wasn't a permanent part of the carriage, which carried 72 3rd class passengers and their luggage. The locomotive was laid out as a "cab-forward" placed over the single driving axle, which was driven by cylinders set between the drivers and the rear trailer. Specifications called for top speeds of 35 mph (56 kph).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Steam motor |
| Locobase ID | 10584 |
| Railroad | North Western Railways |
| Country | India |
| Whyte | 0-2-2+4T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 5'6" |
| Number Built | 1 |
| Builder | Vulcan Foundry |
| Year | 1906 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 8.50 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 50.75 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,240 |
| Weight on Drivers (lbs / kg) | 30,240 |
| Engine Weight (lbs / kg) | 79,632 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 360 / 1.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.60 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 39 / 991 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 14" / 229x356 |
| Tractive Effort (lbs / kg) | 3954 / 1793.51 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.65 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 164 - 1.75" / 0 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 3.33 |
| Firebox Area (sq ft / m2) | 48 / 4.46 |
| Grate Area (sq ft / m2) | 9 |
| Evaporative Heating Surface (sq ft / m2) | 300 / 27.88 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 300 / 27.88 |
| Evaporative Heating Surface/Cylinder Volume | 291.03 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1440 |
| Same as above plus superheater percentage | 1440 |
| Same as above but substitute firebox area for grate area | 7680 |
| Power L1 | 5448 |
| Power MT | |