Mecklenburg-Pommern Schmalspurbahn 0-6-2 Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class K34.3 / 99 335 (Locobase 6537)

Data from Christian Lindecke's [link] (visited 27 May 2005). See also the Wikipedia entry at [link] and the Feldbahn Museum's fact sheet at [link]

Delivered in 1906 (works #989), 1907 (1138), and 1908 (1206). These were tiny radial tanks named JACOBI, KAYSER, and GRAF SCHWERIN LOWITZ. The FBM's photo shows a little diamond stacker with a large dome and cab and the Heusinger gear layout obscuring a view of the first two axles.

The MPSB was opened in 1891 first to freight then, in 1894, to traffic. As traffic grew in the 1930s, more route miles were added, the total eventually reaching 240-260 km (149-161 sm).

After World War II, the system was dismantled by the Soviet occupation with the last rail being pulled up in 1970 by the East German national railway. The locomotives went in various directions, JAKOBI winding up in the German military railway museum (Feldbahnmuseum), KAYSER on the Bahnhof Friedland, and the GRAF across the North Sea to the Brecon Mountain Railway in Great Britain.

A portion of the MPSB was restored to service in the late 1990s as a tourist railway.

The BMR's website [link] discusses the condition of the locomotive when they took ownership. "[It] came in very poor condition and the final indignity was when its chimney was destroyed by a low bridge on the journey here."

Undaunted, the museum railway restored the engine and put it back in service in 1981. The Graf accumulated more than 150,000 miles (241,500 km) on the BMR. Placed in semi-retirement because it simply lacked the power to tackle the Torpantau extension, the Graf was steamed for special events.


Class K34.4 / 99 345 (Locobase 6539)

Data from Christian Lindecke's [link] (visited 27 May 2005). See also [link], last accessed 11 April 2010.

Delivered in 1914 (works #2155), this radial tank was an enlargement of earlier MPSB 0-6-2Ts (see Locobase 6537). In addition, the boiler was now superheated.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassK34.3 / 99 335K34.4 / 99 345
Locobase ID6537 6539
RailroadMecklenburg-Pommern SchmalspurbahnMecklenburg-Pommern Schmalspurbahn
CountryGermanyGermany
Whyte0-6-2T0-6-2T
Number in Class31
Road Numbers1, 4, 5 / 99 3351-33538 / 99 3451
Gauge60 cm60 cm
Number Built31
BuilderJungJung
Year19061914
Valve GearHeusingerHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m) 9.51 / 2.90 9.84 / 3
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m) 9.51 / 2.90 9.84 / 3
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)25,133 / 11,400
Engine Weight (lbs / kg)29,101 / 13,20030,865 / 14,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)792 / 3158 / 0.60
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.60 / 1 0.70 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 7
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)24.80 / 63025.60 / 650
Boiler Pressure (psi / kPa)174 / 1200174 / 1200
High Pressure Cylinders (dia x stroke) (in / mm)8.46" x 11.81" / 215x30010.04" x 11.81" / 255x300
Tractive Effort (lbs / kg)5041 / 2286.566878 / 3119.81
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.65
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)21.74 / 2.0226.47 / 2.46
Grate Area (sq ft / m2) 4.84 / 0.45 5.60 / 0.52
Evaporative Heating Surface (sq ft / m2)222 / 20.67223 / 20.70
Superheating Surface (sq ft / m2)91 / 8.50
Combined Heating Surface (sq ft / m2)222 / 20.67314 / 29.20
Evaporative Heating Surface/Cylinder Volume288.93206.07
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation842974
Same as above plus superheater percentage8421257
Same as above but substitute firebox area for grate area37835941
Power L130958056
Power MT2119.97

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