Data from "2-8-2 Goods Locomotives for the North Western State Ry of India, Trans-Indus Section, Kalabash-Bannu Line", Locomotive Magazine, Volume XX [ 20] (15 April 1914), pp. 108-110; and "Narrow Gauge Goods Locomotive, Indian State Rys", Locomotive Magazine, Volume XXIII [23] (17 February 1917), p. 23. Works numbers were 20952-20955 in 1915.
Tackling the Kalabash-Bannu line beginning at the broad-gauge station at Mari on the east bank of the Indus inevitably meant heavy duty. The consulting engineering firm Rendel, Palmer & Tritton worked with North British and came up with a wood-burning Mikado.
Its relatively broad wood-burning grate and Belpaire firebox indicated a trailing axle whose 36" (914 mm) diameter wheels were inside a widened section of the engine frame that was attached to a steel transverse casting ahead of the firebox.. The leading truck rode under a long deck ahead of the smokebox. Both axles had boxes fixed to long members leading to a central pivot.
The wood fuel implies a relatively large grate and the tender held 2 1/2 tons (2,540 kg) of it.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 13 |
| Locobase ID | 20346 |
| Railroad | North Western State - Kalabash-Bannu line |
| Country | India |
| Whyte | 2-8-2 |
| Number in Class | 4 |
| Road Numbers | 13-16 |
| Gauge | 2'6" |
| Number Built | 4 |
| Builder | North British |
| Year | 1915 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.58 / 2.92 |
| Engine Wheelbase (ft / m) | 22.83 / 6.96 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 62,720 / 28,449 |
| Engine Weight (lbs / kg) | 87,584 / 39,727 |
| Tender Loaded Weight (lbs / kg) | 41,216 / 18,695 |
| Total Engine and Tender Weight (lbs / kg) | 128,800 / 58,422 |
| Tender Water Capacity (gals / ML) | 2040 / 7.73 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.75 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 26 / 13 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 34 / 864 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.5" x 18" / 368x457 |
| Tractive Effort (lbs / kg) | 16,084 / 7295.59 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.90 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 170 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.75 / 3.89 |
| Firebox Area (sq ft / m2) | 79 / 7.34 |
| Grate Area (sq ft / m2) | 20.50 / 1.90 |
| Evaporative Heating Surface (sq ft / m2) | 1218 / 113.16 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1218 / 113.16 |
| Evaporative Heating Surface/Cylinder Volume | 354.05 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3485 |
| Same as above plus superheater percentage | 3485 |
| Same as above but substitute firebox area for grate area | 13,430 |
| Power L1 | 4517 |
| Power MT | 635.09 |