Christian Lindecke [] (visited 28 November 2003) for data, supplemented by [], last accessed 14 May 2011. Works numbers included 3370 in 1907 to 3523 in 1909.
Lindecke describes these as among the most efficient of their wheel arrangement in their time. He notes the relatively tall drivers.
Once the DRG absorbed all eight as BR 92 101-108, the engines served for decades more, through World War II, only being taken out of mainline service in 1946-1948.
Additional data from US Military Railway Service Equipment Data Book -- German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange in March 2004
Christian Lindecke [] (visited 14 November 2004), supplemented by Albert Gieseler at [], last accessed 9 May 2011.
Locobase's translation of the German infers that these were follow-ons to the T4s, but with significant changes: the boiler was superheated to high degree, the cylinder diameter dropped as did the driver diameter. Their tonnage rating was 320 tons up a 1/2% grade at 40 km/h (28 mph). Gieseler's data shows that the tube and flue count was way out of the ordinary; given that all but 4 are described as flues, Locobase infers a fully superheated boiler
When World War I ended, one of the class was passed along to France as a war reparation. The others were grouped into the DRG's BauReihe 92 0 class. Ten survived World War II and the last was withdrawn in 1948.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | T4 / BR 92.1 | T6 / BR 92.0 |
Locobase ID | 5830 | 6351 |
Railroad | Wurttembergische (Wurttemberg) Staatsbahn | Wurttembergische (Wurttemberg) Staatsbahn |
Country | Germany | Germany |
Whyte | 0-8-0T | 0-8-0T |
Number in Class | 8 | 12 |
Road Numbers | 851-858 / BR 92 101-108 | 1401-12 / BR 92 001- 012 |
Gauge | Std | Std |
Number Built | 8 | 12 |
Builder | Esslingen | Esslingen |
Year | 1906 | 1916 |
Valve Gear | Heusinger | |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 15.26 / 4.65 | |
Engine Wheelbase (ft / m) | 15.26 / 4.65 | 16.40 / 5 |
Ratio of driving wheelbase to overall engine wheelbase | 1 | |
Overall Wheelbase (engine & tender) (ft / m) | 15.26 / 4.65 | 16.40 / 5 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,935 / 16,300 | 33,290 / 15,100 |
Weight on Drivers (lbs / kg) | 142,198 / 64,500 | 132,277 / 60,000 |
Engine Weight (lbs / kg) | 142,198 / 64,500 | 132,277 / 60,000 |
Tender Loaded Weight (lbs / kg) | ||
Total Engine and Tender Weight (lbs / kg) | 142,198 / 64,500 | 132,277 / 60,000 |
Tender Water Capacity (gals / ML) | 1584 / 6 | 2112 / 8 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 2 | 3.90 / 4 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 59 / 29.50 | 55 / 27.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 54.30 / 1380 | 45.30 / 1151 |
Boiler Pressure (psi / kPa) | 203.10 / 1400 | 188.50 / 1300 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20.87" x 24.09" / 530x612 | 19.69" x 22.05" / 500x560 |
Tractive Effort (lbs / kg) | 33,359 / 15131.41 | 30,237 / 13715.29 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.26 | 4.37 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 266 - 1.772" / 45 | 4 - 2.756" / 70 |
Flues (number - dia) (in / mm) | 84 - 2.756" / 70 | |
Flue/Tube length (ft / m) | 13.12 / 4 | 11.81 / 3.60 |
Firebox Area (sq ft / m2) | 104.37 / 9.70 | 75.32 / 7 |
Grate Area (sq ft / m2) | 22.38 / 2.08 | 16.14 / 1.50 |
Evaporative Heating Surface (sq ft / m2) | 1543 / 143.40 | 768 / 71.38 |
Superheating Surface (sq ft / m2) | 473 / 43.96 | |
Combined Heating Surface (sq ft / m2) | 1543 / 143.40 | 1241 / 115.34 |
Evaporative Heating Surface/Cylinder Volume | 161.77 | 98.83 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 4545 | 3042 |
Same as above plus superheater percentage | 4545 | 4198 |
Same as above but substitute firebox area for grate area | 21,198 | 19,593 |
Power L1 | 3979 | 9892 |
Power MT | 246.76 | 659.47 |