[] (viewed 18 July 2003) for data and information.
The first of the BDZ's 0-6-0T type, which were eventually grouped together as Class 47, this trio had somewhat larger boilers and fireboxes than later versions.
[] (viewed 18 July 2003) for data and information. Firetube diameters are inner dimension - add 8-10% to find tube surface area as measured by Anglo-American standards.
Following up on the earlier 0-6-0Ts, this quintet tinkered with the grate and firebox areas and moved the steam dome forward to the first boiler course. The wheelbase also lengthened as the driver diameter decreased slightly.
[] (viewed 18 July 2003) for data and information. See also L Renewal, "The Railways of Bulgaria", Cassier's Engineering Monthly, Volume 52, No 1 (July 1917), pp. 13-24 , esp Table of Principal Dimensions, p. 15. Firetube diameters are inner dimension - add 8-10% to find tube surface area as measured by Anglo-American standards.
Nine years after the Maffei engines appeared on the BDZ (Locobase 5665), the country ordered a new batch from a different builder. Using the same power dimensions, except for slightly smaller drivers, the new class had a smaller grate and somewhat smaller boiler. Externally, the principal differences were longer side tanks.
[] (viewed 18 July 2003) for data and information. Firetube diameter is inner dimension.
Although grouped with other classes of 0-6-0Ts as Class 47 in the BDZ's 1936 renumbering, these were quite a bit newer and the only batch that came from Czechoslovakia. They were an amalgam of the earlier Maffei and Henschel designs.
[] (viewed 18 July 2003). There are two sub-classes to this small set of six-coupleds. The first five -- Iskar, Struma, Maritza, Yantra, and one unnamed -- had a single steam dome over the leading set of drivers. The last two had the double-dome arrangement with a dry pipe connecting the two. Otherwise, the designs were identical.
They were rated at 112 tons up 2.5% at 20 km/h (12.4 mph) and, with their relatively high drivers, used on passenger trains. All operated on the Tzaribrod-Sofia-Vakarel line; 156-157 later moved to the Yambol-Burgas route, an East-West alignment with one end on the Black Sea. All had been retired by 1921.
Principal Dimensions by Steve Llanso of Middle Run Media | |||||
---|---|---|---|---|---|
Class | 1002/47.01 | 1005/47.04 | 1010/47.09 | 1021/47.19 | River |
Locobase ID | 5664 | 5665 | 5666 | 1600 | 5663 |
Railroad | Bulgarian State | Bulgarian State | Bulgarian State | Bulgarian State | Bulgarian State |
Country | Bulgaria | Bulgaria | Bulgaria | Bulgaria | Bulgaria |
Whyte | 0-6-0T | 0-6-0T | 0-6-0T | 0-6-0T | 0-6-0 |
Number in Class | 3 | 5 | 11 | 20 | 7 |
Road Numbers | 1002-1004/47.01-47.03 | 1005-1009/47.04-47.08 | 1010-1020 | 1021-1040/47.19-38 | 151-157 |
Gauge | Std | Std | Std | Std | Std |
Number Built | 3 | 5 | 11 | 20 | 7 |
Builder | Maffei | Maffei | Henschel & Sohn | Skoda | Floridsdorf |
Year | 1897 | 1900 | 1909 | 1925 | 1888 |
Valve Gear | Walschaert | Stephenson | Walschaert | Walschaert | Stephenson |
Locomotive Length and Weight | |||||
Driver Wheelbase (ft / m) | 11.40 / 3.48 | 12.14 / 3.70 | 12.14 / 3.70 | 11.98 / 3.65 | 11.22 / 3.42 |
Engine Wheelbase (ft / m) | 11.40 / 3.48 | 12.14 / 3.70 | 12.14 / 3.70 | 11.98 / 3.65 | 11.22 / 3.42 |
Ratio of driving wheelbase to overall engine wheelbase | 1 | 1 | 1 | 1 | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 12.14 | 12.14 / 3.70 | 35.20 / 10.73 | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,306 / 14,200 | 32,915 / 14,930 | 30,865 / 14,000 | 31,967 / 14,500 | |
Weight on Drivers (lbs / kg) | 93,917 / 42,600 | 98,767 / 44,800 | 92,594 / 42,000 | 95,901 / 43,500 | 85,716 / 38,880 |
Engine Weight (lbs / kg) | 93,917 / 42,600 | 98,767 / 44,800 | 92,594 / 42,000 | 95,901 / 43,500 | 85,716 / 38,880 |
Tender Loaded Weight (lbs / kg) | 58,863 / 26,700 | ||||
Total Engine and Tender Weight (lbs / kg) | 144,579 / 65,580 | ||||
Tender Water Capacity (gals / ML) | 1452 / 5.50 | 1320 / 5 | 1452 / 5.50 | 1452 / 5.50 | 2508 / 9.50 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 2 | 1.80 / 2 | 1.80 / 2 | 2.20 / 2 | 5.50 / 5 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 52 / 26 | 55 / 27.50 | 51 / 25.50 | 53 / 26.50 | 48 / 24 |
Geometry Relating to Tractive Effort | |||||
Driver Diameter (in / mm) | 48.60 / 1235 | 47.90 / 1216 | 47.50 / 1206 | 47.50 / 1206 | 57.30 / 1456 |
Boiler Pressure (psi / kPa) | 174 / 1200 | 174 / 1200 | 174 / 1200 | 174 / 1200 | 145 / 1000 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.54" x 24.02" / 420x610 | 16.54" x 24.02" / 420x610 | 16.54" x 24.02" / 420x610 | 16.54" x 24.02" / 420x610 | 17.72" x 25.59" / 450x650 |
Tractive Effort (lbs / kg) | 19,998 / 9070.95 | 20,290 / 9203.40 | 20,461 / 9280.96 | 20,461 / 9280.96 | 17,283 / 7839.45 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.70 | 4.87 | 4.53 | 4.69 | 4.96 |
Heating Ability | |||||
Tubes (number - dia) (in / mm) | 165 - 1.85" / 52 | 187 - 1.57" / 45 | 184 - 1.772" / 45 | 187 - 1.57" / 45 | |
Flues (number - dia) (in / mm) | |||||
Flue/Tube length (ft / m) | 11.81 / 3.60 | ||||
Firebox Area (sq ft / m2) | 73.49 / 6.83 | 68.97 / 6.41 | 69 / 6.41 | 68.97 / 6.41 | |
Grate Area (sq ft / m2) | 21.30 / 1.98 | 21.95 / 2.04 | 17.33 / 1.61 | 17.32 / 1.61 | 17.11 / 1.59 |
Evaporative Heating Surface (sq ft / m2) | 1013 / 94.11 | 981 / 91.21 | 965 / 89.61 | 981 / 91.21 | 1302 / 120.97 |
Superheating Surface (sq ft / m2) | |||||
Combined Heating Surface (sq ft / m2) | 1013 / 94.11 | 981 / 91.21 | 965 / 89.61 | 981 / 91.21 | 1302 / 120.97 |
Evaporative Heating Surface/Cylinder Volume | 169.59 | 164.23 | 161.55 | 164.23 | 178.25 |
Computations Relating to Power Output (More Information) | |||||
Robert LeMassena's Power Computation | 3706 | 3819 | 3015 | 3014 | 2481 |
Same as above plus superheater percentage | 3706 | 3819 | 3015 | 3014 | 2481 |
Same as above but substitute firebox area for grate area | 12,787 | 12,001 | 12,006 | 12,001 | |
Power L1 | 3257 | 3083 | 3021 | 3057 | |
Power MT | 229.37 | 206.45 | 215.79 | 210.83 |