Data from "Metre Gauge Goods Locomotives Rohilkund-Kumaon Railway", The Locomotive Magazine, Volume XXVI [26] (13 March 1920), p. 62.
As noted in Locobase 10180 for the O-class passenger engines, this goods locomotive design was a standard for most metre-gauge railways of the time. The program which continued for almost 50 years (1874 to 1922) saw over 1,000 engines built (see Locobase 3039).
Unlike the passenger engines, however, F goods locomotives had inside plate frames and inside valve motion serving outside cylinders. These had Belpaire fireboxes. RK's septet was part of a 20-engine order; see Locobase
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | F |
| Locobase ID | 20788 |
| Railroad | Rohilkund-Kumaon |
| Country | India |
| Whyte | 0-6-0 |
| Number in Class | 7 |
| Road Numbers | |
| Gauge | Metre |
| Number Built | 7 |
| Builder | WG Bagnall |
| Year | 1920 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11 / 3.35 |
| Engine Wheelbase (ft / m) | 11 / 3.35 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 17,808 / 8078 |
| Weight on Drivers (lbs / kg) | 51,324 / 23,280 |
| Engine Weight (lbs / kg) | 51,324 / 23,280 |
| Tender Loaded Weight (lbs / kg) | 36,092 / 16,371 |
| Total Engine and Tender Weight (lbs / kg) | 87,416 / 39,651 |
| Tender Water Capacity (gals / ML) | 2400 / 9.09 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 4.40 / 4 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 29 / 14.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 43.50 / 1105 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 12,256 / 5559.23 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.19 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 144 - 1.625" / 41 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.50 / 2.90 |
| Firebox Area (sq ft / m2) | 62.60 / 5.82 |
| Grate Area (sq ft / m2) | 12.50 / 1.16 |
| Evaporative Heating Surface (sq ft / m2) | 638 / 59.27 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 638 / 59.27 |
| Evaporative Heating Surface/Cylinder Volume | 179.04 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2000 |
| Same as above plus superheater percentage | 2000 |
| Same as above but substitute firebox area for grate area | 10,016 |
| Power L1 | 3096 |
| Power MT | 398.97 |