Data from the [] datasheet, last accessed 31 January 2012. Works numbers were 12347-12
The engines were delivered to the complex of rail lines connecting the 13 mines, 6 smelters, and 2 transfer stations. Like other narrow-gauge lines in Germany, the MBB used "rollwagens" to carry standard-gauge freight cars on a platform rolling on trucks that ran on the 750-mm gauge line. At the transfer stations, these cars would roll off the rollwagen and onto their own wheels.
Note the square cylinder dimensions. The datasheet illustration shows a big, burly narrow-gauge engine.
The 7 was sold to the Rugener, but the others remained in service throughout World War II, transferred their flag to East Germany, and continued working for decades.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | K44.9 |
Locobase ID | 13806 |
Railroad | Mansfelder BergwerksBahn (MBB)` |
Country | Germany |
Whyte | 0-8-0T |
Number in Class | 6 |
Road Numbers | 6-11 |
Gauge | 75 cm |
Number Built | 6 |
Builder | Orenstein & Koppel |
Year | 1931 |
Valve Gear | Heusinger |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 9.84 / 3 |
Engine Wheelbase (ft / m) | 9.84 / 3 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 21,385 / 9700 |
Weight on Drivers (lbs / kg) | 82,012 / 37,200 |
Engine Weight (lbs / kg) | 82,012 / 37,200 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 1030 / 3.90 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.90 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 31.50 / 800 |
Boiler Pressure (psi / kPa) | 227.70 / 1570 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15.75" x 15.75" / 400x400 |
Tractive Effort (lbs / kg) | 24,006 / 10888.95 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.42 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 74 - 2.756" / 70 |
Flues (number - dia) (in / mm) | 12 - 1.772" / 45 |
Flue/Tube length (ft / m) | 9.19 / 2.80 |
Firebox Area (sq ft / m2) | 64.58 / 6 |
Grate Area (sq ft / m2) | 16.15 / 1.50 |
Evaporative Heating Surface (sq ft / m2) | 606 / 56.30 |
Superheating Surface (sq ft / m2) | 280 / 26 |
Combined Heating Surface (sq ft / m2) | 886 / 82.30 |
Evaporative Heating Surface/Cylinder Volume | 170.63 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 3677 |
Same as above plus superheater percentage | 4854 |
Same as above but substitute firebox area for grate area | 19,410 |
Power L1 | 11,609 |
Power MT | 1248.28 |