Data from "Tank Locomotive for Suburban Traffic", Railroad and Engineering Journal, Volume LXV, No. 3 (March 1891), p. 129. See also E B Carroll, "Four Wheels Coupled-Radial Tank Engine for the Bombay, Baroda & Central India Railway", Railway Engineer Vol XII, No 2 (February 1891), pp. 29-30. Works numbers were 1225-1228 in 1888.
This suburban tank was designed for use on trains of twelve cars over a ten-mile run with stops every 3/4 of mile. The article reported claims that these engines "run very steadily, and have worked remarkably well for the peculiar traffic for which they were intended." Average coal consumption over the first nine months was 32 lb/mile.
A much later example of a Vulcan 2-4-2 tank in Bombay service is shown at Locobase 2481, and could very well be a superheated variant of this design.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 9 |
| Locobase ID | 5412 |
| Railroad | Bombay, Baroda & Central India |
| Country | India |
| Whyte | 2-4-2T |
| Number in Class | 4 |
| Road Numbers | 9-12 |
| Gauge | 5'6" |
| Number Built | 4 |
| Builder | Vulcan Foundry |
| Year | 1888 |
| Valve Gear | Allan |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.25 / 2.21 |
| Engine Wheelbase (ft / m) | 20.75 / 6.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.35 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,688 / 13,920 |
| Weight on Drivers (lbs / kg) | 58,800 / 26,671 |
| Engine Weight (lbs / kg) | 101,080 / 45,849 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 800 / 3.03 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.50 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 49 / 24.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 (4) |
| Tractive Effort (lbs / kg) | 29,478 / 13371.01 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 1.99 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 168 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.25 / 3.12 |
| Firebox Area (sq ft / m2) | 91.47 / 8.50 |
| Grate Area (sq ft / m2) | 16.67 / 1.55 |
| Evaporative Heating Surface (sq ft / m2) | 993 / 92.25 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 993 / 92.25 |
| Evaporative Heating Surface/Cylinder Volume | 78.75 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2501 |
| Same as above plus superheater percentage | 2501 |
| Same as above but substitute firebox area for grate area | 13,721 |
| Power L1 | 1725 |
| Power MT | 129.35 |