Data from US Military Railway Service Equipment Data Book -- German Locomotives supplied from the extensive collection of Allen Stanley (March 2004). See also "Baureihe 59.0" on Alfred Gieseler's Dampfmaschinen und Lokomotiven website at [], last accessed 21 April 2019; and "Württembergische K" in Wikipedia.de at [], last accessed 16 February 2024; and Douglas Self, "Wurtemberg [sic] State Railway Class K locomotive" at [], last accessed 16 February 2024 . (Thanks to Alexander Blessing for his 4 February 2024 email noting the correct road numbers and engine wheelbase.)
home.t-online.de/home/kopka.manfred/stamp.htm added that these engines were quite successful, both the most powerful freight haulers of their time and an extremely economical design on an axle loading of 16 metric tons (35,274 lb) . (Wikipedia's entry says the class showed better economy on the hilly sections than on the flat.). They were four-cylinder de Glehn compounds with the inside HP cylinders driving the third coupled axles and outside low-pressure cylinders turning the 4th coupling axle.
With electrification of the Geislinger line, some were sent off to Austria to work the Semmering grade with four 659s (postwar cliass ID by the OBB) operating until 1957. Others went to Hungary and Yugoslavia. Of those that remained in Germany, the last continued in service until 1953.
NB: Locobase's specs are based on the water-side tube heating surface area. Figured from the fire side (the usual practice in Continental countries), the tube heating surface area was 2,331 sq ft (216.56 sq m) and evaporative heating surface area was 2,503 sq ft (232.5 sq m). Also the MRS Diagram Book, notable for its very exact conversions, measured the superheater area as 968 sq ft (89.9 sq m).
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | Group K/BR 59 |
Locobase ID | 2521 |
Railroad | Wurttembergische (Wurttemberg) Staatsbahn |
Country | Germany |
Whyte | 2-12-0 |
Number in Class | 44 |
Road Numbers | 1801-1815/59 001-59 044 |
Gauge | Std |
Number Built | 44 |
Builder | Esslingen |
Year | 1917 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 23.79 / 7.25 |
Engine Wheelbase (ft / m) | 32.48 / 9.90 |
Ratio of driving wheelbase to overall engine wheelbase | 0.73 |
Overall Wheelbase (engine & tender) (ft / m) | 56.36 / 17.18 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 34,833 / 15,800 |
Weight on Drivers (lbs / kg) | 208,557 / 94,600 |
Engine Weight (lbs / kg) | 238,099 / 108,000 |
Tender Loaded Weight (lbs / kg) | 102,740 / 46,602 |
Total Engine and Tender Weight (lbs / kg) | 340,839 / 154,602 |
Tender Water Capacity (gals / ML) | 5280 / 20 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.60 / 6 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 58 / 29 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 53.10 / 1349 |
Boiler Pressure (psi / kPa) | 217.60 / 1500 |
High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 25.59" / 500x650 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 29.53" x 25.59" / 750x650 |
Tractive Effort (lbs / kg) | 47,844 / 21701.70 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.36 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 183 - 2.047" / 52 |
Flues (number - dia) (in / mm) | 32 - 5.236" / 133 |
Flue/Tube length (ft / m) | 18.04 / 5.50 |
Firebox Area (sq ft / m2) | 172.22 / 16 |
Grate Area (sq ft / m2) | 44.24 / 4.11 |
Evaporative Heating Surface (sq ft / m2) | 2733 / 253.90 |
Superheating Surface (sq ft / m2) | 861 / 80 |
Combined Heating Surface (sq ft / m2) | 3594 / 333.90 |
Evaporative Heating Surface/Cylinder Volume | 303.04 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 9627 |
Same as above plus superheater percentage | 11,937 |
Same as above but substitute firebox area for grate area | 46,469 |
Power L1 | 10,769 |
Power MT | 683.02 |