Bulgarian State 0-8-0 Locomotives in Bulgaria


Class Details by Steve Llanso of Sweat House Media

Class 251/25.02 (Locobase 5653)

[link] (viewed 18 July 2003). One of two compound 0-8-0 classes that the BDZ imported at the turn of the century.

Only the 254 still ran in 1936, when the BDZ numbered it 25.002


Class 255 (Locobase 5654)

[link] (viewed 18 July 2003). Tube diameters are inner dimension. One of two compound 0-8-0 classes that the BDZ imported at the turn of the century.

The data show that these were smaller engines than the Vulkan engines imported a few years earlier. by 1936, only 255 & 256 were left and they were redesignated 25.003-.004.


Class 320/26.01 (Locobase 5655)

[link] (viewed 18 July 2003).

Tube diameters are inner dimension. Part of a large class of cross-compound 0-8-0s with the LP cylinder on the right-hand side, these first 8 had the most heating surface area. By 1936, 3 had been retired or lost in service or in war. The remainder were numbered 26.001-26.005.


Class 328/26.06 (Locobase 5656)

Data from [link] (viewed 18 July 2003). See also "Bulgarian Railway Locomotives," Railway Engineer, Volume 33, No. 12 (December 1912), pp. 386-388. Maffei delivered the first six in 1904, Sigl of Vienna contributed the next ten in 1906, and Hanomag supplied the last eight in 1908.

Tube diameters are inner dimension.

Part of a large class of cross-compound 0-8-0s with the LP cylinder on the right-hand side, this group had a smaller boiler with fewer, larger diameter firetubes and the same grate as the earlier 320s. The RE report noted a small appliance fixed to the smokebox high on the right side. It was a non-automatic starting valve used to supply live steam to the LP cylinder when the locomotive was just getting under way.

By 1936, when BDZ undertook a system-wide renumbering, the 24 had been reduced to 14 and these were numbered 26.06 to 26.19.


Class 352/26.20 (Locobase 5657)

Data from [link] (viewed 18 July 2003). 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. See also "Bulgarian State Railways", Railway Engineer. Volume 33, No 12 (December 1912)), pp. 385-389

Tube diameters are inner dimension.

Part of a large class of cross-compound 0-8-0s with the LP cylinder on the right-hand side, this last group had a slightly deeper firebox and a larger tender.

By 1936, when BDZ undertook a system-wide renumbering, almost all of these Henschels were still in service. The 19 survivors were renumbered 26.20 to .38.


Class Bulgaria/25.01 (Locobase 5652)

[link] (viewed 18 July 2003). [link] (viewed 18 July 2003). This class included the name locomotive and Macedonia, Balkan, Musala, Buzludza, & Shipka. They were later renumbered 208-213. Trifonov's photo shows the 3rd-axle drive and the externally mounted eccentrics.

All but one had been scrapped by 1936, when the BDZ's renumbering awarded Macedonia the number 25.01.

Principal Dimensions by Steve Llanso of Middle Run Media
Class251/25.02255320/26.01328/26.06352/26.20
Locobase ID5653 5654 5655 5656 5657
RailroadBulgarian StateBulgarian StateBulgarian StateBulgarian StateBulgarian State
CountryBulgariaBulgariaBulgariaBulgariaBulgaria
Whyte0-8-00-8-00-8-00-8-00-8-0
Number in Class4582421
Road Numbers64-67/251-254255-259320-327328-351352-372
GaugeStdStdStdStdStd
Number Built4582421
BuilderVulkanHanomagHannoverseveralHenschel & Sohn
Year18991905190119041908
Valve GearAllanAllanAllanAllanAllan
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.76 / 4.5014.76 / 4.5013.12 / 413.12 / 413.12 / 4
Engine Wheelbase (ft / m)14.76 / 4.5014.76 / 4.5013.12 / 413.12 / 413.12 / 4
Ratio of driving wheelbase to overall engine wheelbase11111
Overall Wheelbase (engine & tender) (ft / m)39.70 / 12.1038.68 / 11.7938.16 / 11.6338.01 / 11.5937.94 / 11.56
Axle Loading (Maximum Weight per Axle) (lbs / kg)29,299 / 13,29029,762 / 13,50031,085 / 14,10031,085 / 14,10031,085 / 14,100
Weight on Drivers (lbs / kg)117,154 / 53,140119,049 / 54,000124,341 / 56,400124,341 / 56,400124,341 / 56,400
Engine Weight (lbs / kg)117,154 / 53,140119,049 / 54,000124,341 / 56,400124,341 / 56,400124,341 / 56,400
Tender Loaded Weight (lbs / kg)63,691 / 28,89072,091 / 32,70065,036 / 29,50069,556 / 31,55072,312 / 32,800
Total Engine and Tender Weight (lbs / kg)180,845 / 82,030191,140 / 86,700189,377 / 85,900193,897 / 87,950196,653 / 89,200
Tender Water Capacity (gals / ML)2587 / 9.803168 / 122587 / 9.802640 / 103168 / 12
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 6.60 / 6 5.50 / 5 6.60 / 6 7.70 / 7 5.50 / 5
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.5050 / 2552 / 2652 / 2652 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.20 / 125049.20 / 125049.20 / 125049.20 / 125049.20 / 1250
Boiler Pressure (psi / kPa)174 / 1200174 / 1200174 / 1200171.10 / 1180174 / 1200
High Pressure Cylinders (dia x stroke) (in / mm)20.87" x 24.8" / 530x630 (1)20.87" x 24.8" / 530x630 (1)21.65" x 24.8" / 550x630 (1)21.65" x 24.8" / 550x630 (1)21.65" x 24.8" / 550x630 (1)
Low Pressure Cylinders (dia x stroke) (in / mm)29.53" x 24.8" / 750x630 (1)29.53" x 24.8" / 750x630 (1)30.71" x 24.8" / 780x630 (1)30.71" x 24.8" / 780x630 (1)30.71" x 24.8" / 780x630 (1)
Tractive Effort (lbs / kg)21,655 / 9822.5521,655 / 9822.5523,343 / 10588.2222,954 / 10411.7723,343 / 10588.22
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.41 5.50 5.33 5.42 5.33
Heating Ability
Tubes (number - dia) (in / mm)290 - 1.772" / 45224 - 1.77" / 50304 - 1.57" / 45238 - 2.047" / 52238 - 1.85" / 52
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.45 / 4.1013.45 / 4.1015.42 / 4.70
Firebox Area (sq ft / m2)113.20 / 10.52110.83 / 10.30120.73 / 11.22120.77 / 11.22127.72 / 11.87
Grate Area (sq ft / m2)24.21 / 2.2524.21 / 2.2526.58 / 2.4726.59 / 2.4726.58 / 2.47
Evaporative Heating Surface (sq ft / m2)1721 / 159.921496 / 1391823 / 169.471690 / 1571696 / 157.65
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1721 / 159.921496 / 1391823 / 169.471690 / 1571696 / 157.65
Evaporative Heating Surface/Cylinder Volume350.54304.71345.04319.87321.01
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation42134213462545504625
Same as above plus superheater percentage42134213462545504625
Same as above but substitute firebox area for grate area19,69719,28421,00720,66422,223
Power L133202976325730273133
Power MT249.90220.45230.99214.68222.20

Principal Dimensions by Steve Llanso of Middle Run Media
ClassBulgaria/25.01
Locobase ID5652
RailroadBulgarian State
CountryBulgaria
Whyte0-8-0
Number in Class6
Road Numbers58-63/208-213
GaugeStd
Number Built6
BuilderHannover
Year1891
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.12 / 4
Engine Wheelbase (ft / m)13.12 / 4
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)37.27 / 11.36
Axle Loading (Maximum Weight per Axle) (lbs / kg)29,740 / 13,490
Weight on Drivers (lbs / kg)118,983 / 53,970
Engine Weight (lbs / kg)118,983 / 53,970
Tender Loaded Weight (lbs / kg)71,430 / 32,400
Total Engine and Tender Weight (lbs / kg)190,413 / 86,370
Tender Water Capacity (gals / ML)2772 / 10.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 6.60 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)50 / 25
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.20 / 1250
Boiler Pressure (psi / kPa)174 / 1200
High Pressure Cylinders (dia x stroke) (in / mm)20.08" x 23.62" / 510x600
Tractive Effort (lbs / kg)28,629 / 12985.91
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.16
Heating Ability
Tubes (number - dia) (in / mm)283 - 1.57" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)15.42 / 4.70
Firebox Area (sq ft / m2)123.74 / 11.50
Grate Area (sq ft / m2)26.58 / 2.47
Evaporative Heating Surface (sq ft / m2)1921 / 178.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1921 / 178.50
Evaporative Heating Surface/Cylinder Volume221.89
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4625
Same as above plus superheater percentage4625
Same as above but substitute firebox area for grate area21,531
Power L14186
Power MT310.25

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