Bulgarian State 2-8-4 Locomotives in Bulgaria
Class Details by Steve Llanso of Sweat House Media
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| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 36 |
| Locobase ID | 1598 |
| Railroad | Bulgarian State |
| Country | Bulgaria |
| Whyte | 2-8-4T |
| Number in Class | 10 |
| Road Numbers | 36.01-10 |
| Gauge | Std |
| Number Built | 10 |
| Builder | Krupp |
| Year | 1943 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 19.03 / 5.80 |
| Engine Wheelbase (ft / m) | 39.70 / 12.10 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.48 |
| Overall Wheelbase (engine & tender) (ft / m) | 39.70 / 12.10 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 36,707 / 16,650 |
| Weight on Drivers (lbs / kg) | 138,009 / 62,600 |
| Engine Weight (lbs / kg) | 244,558 / 110,930 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2376 / 9 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.80 / 8 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 58 / 29 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 61 / 1550 |
| Boiler Pressure (psi / kPa) | 232.10 / 1600 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.32" x 27.56" / 440x700 (3) |
| Tractive Effort (lbs / kg) | 40,108 / 18192.70 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.44 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 127 - 1.93" / 54 |
| Flues (number - dia) (in / mm) | 38 - 5.31" / 143 |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 166.78 / 15.50 |
| Grate Area (sq ft / m2) | 43.04 / 4 |
| Evaporative Heating Surface (sq ft / m2) | 1894 / 176 |
| Superheating Surface (sq ft / m2) | 699 / 65 |
| Combined Heating Surface (sq ft / m2) | 2593 / 241 |
| Evaporative Heating Surface/Cylinder Volume | 168.01 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 9990 |
| Same as above plus superheater percentage | 12,687 |
| Same as above but substitute firebox area for grate area | 49,161 |
| Power L1 | 18,878 |
| Power MT | 1206.26 |