Data from Christian Lindecke data from [] (14 Nov 2004).
The only Prussian Prairie tank and overpowered by a wide margin, it seems, even for the duty of quickly accelerating trains on the Berlin Metropolitan line. The outside cylinders drove on the middle coupled axle, while the inside cylinder cranked on the leading coupled axle. The leading guiding axle used Adams radial boxes while the trailing carrying axle rode in a Krauss radial design. Each axle had 40 mm (1 1/2") of lateral play to each side.
According to a table in [] (14 Nove 2004), which displays some of the context of a detailed study of the laenderbahns, the 3-cylinder layout didn't last long. By 1908 the 12 locomotives in the class had been converted to a 2-cylinder design.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | T6 |
Locobase ID | 6347 |
Railroad | Prussian State |
Country | Prussia |
Whyte | 2-6-2T |
Number in Class | 12 |
Road Numbers | 6700-6711 |
Gauge | Std |
Number Built | 12 |
Builder | Berliner Maschinenbau |
Year | 1902 |
Valve Gear | Heusinger |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 12.47 / 3.80 |
Engine Wheelbase (ft / m) | 29.53 / 9 |
Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
Overall Wheelbase (engine & tender) (ft / m) | 29.53 / 9 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 36,486 / 16,550 |
Weight on Drivers (lbs / kg) | 107,585 / 48,800 |
Engine Weight (lbs / kg) | 174,055 / 78,950 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 1769 / 6.70 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 60 / 30 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 59.10 / 1500 |
Boiler Pressure (psi / kPa) | 203.10 / 1400 |
High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 24.8" / 500x630 (3) |
Tractive Effort (lbs / kg) | 42,128 / 19108.96 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 2.55 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 240 - 2.008" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 13.78 / 4.20 |
Firebox Area (sq ft / m2) | 128.04 / 11.90 |
Grate Area (sq ft / m2) | 24.75 / 2.30 |
Evaporative Heating Surface (sq ft / m2) | 1667 / 154.95 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1667 / 154.95 |
Evaporative Heating Surface/Cylinder Volume | 127.15 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 5027 |
Same as above plus superheater percentage | 5027 |
Same as above but substitute firebox area for grate area | 26,005 |
Power L1 | 3521 |
Power MT | 216.46 |