Data from keretapi.tripod.com/tech_data.html and internationalsteam.co.uk/ambarawa/locos/C3065.htm, a site for the Ambarawa Railway Museum maintained by Rob Dickinson that shows 69.6 sq m (749 sq ft) for the heating surface, 26.3 sq m (283 sq ft) for the superheater. Locobase suspects that the differences represent different builders (Dickinson's example was a Werkspoor product.)
See Indra Krishnamurti at [] for building dates and numbers both of predecessor railways and the Indonesian State Railways.
46 Prairie tanks arrived from several builders over a two-year period. Borsig (11), Hanomag (12), Hohenzollern (12), and Werkspoor (11).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | C30 |
| Locobase ID | 4740 |
| Railroad | Staatsspoorwegen |
| Country | Indonesia |
| Whyte | 2-6-2T |
| Number in Class | 46 |
| Road Numbers | |
| Gauge | 3'6" |
| Number Built | 46 |
| Builder | several |
| Year | 1929 |
| Valve Gear | |
| 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) | 69,666 / 31,600 |
| Engine Weight (lbs / kg) | 109,790 / 49,800 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 39 / 19.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 53.10 / 1350 |
| Boiler Pressure (psi / kPa) | 176.30 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.73" x 23.62" / 425x600 |
| Tractive Effort (lbs / kg) | 18,657 / 8462.68 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.73 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 17.87 / 1.66 |
| Evaporative Heating Surface (sq ft / m2) | 735 / 68.30 |
| Superheating Surface (sq ft / m2) | 269 / 25 |
| Combined Heating Surface (sq ft / m2) | 1004 / 93.30 |
| Evaporative Heating Surface/Cylinder Volume | 122.30 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3150 |
| Same as above plus superheater percentage | 4001 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |