Data from "New Locomotives for the Great Indian Peninsula Ry," The Locomotive Magazine, Vol XIII (15 April 1907), p. 64
This radial-tank design replaced smaller six-coupled tanks in hauling trains of 7 bogie cars (245 total tons) in Bombay suburban service.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 79 |
| Locobase ID | 10615 |
| Railroad | Great Indian Peninsula (GIPR) |
| Country | India |
| Whyte | 0-6-2T |
| Number in Class | 16 |
| Road Numbers | 79-94 |
| Gauge | 5'6" |
| Number Built | 16 |
| Builder | Kitson & Co |
| Year | 1906 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1800 / 6.82 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 21,481 / 9743.63 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 214 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 106 / 9.85 |
| Grate Area (sq ft / m2) | 23 / 2.14 |
| Evaporative Heating Surface (sq ft / m2) | 1169 / 108.64 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1169 / 108.64 |
| Evaporative Heating Surface/Cylinder Volume | 152.66 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4140 |
| Same as above plus superheater percentage | 4140 |
| Same as above but substitute firebox area for grate area | 19,080 |
| Power L1 | 3994 |
| Power MT | |