Data from [], supplemented by [], last accessed on 12 May 2011.
Accroding to [], this Prairie tank was originally built as a prototype for the NWE. The intervention of World War II and the consequent change in priorities that this engine did not go into series production.
[] (confirmed 3 May 2003) shows the engine as it operated in the 1990s and later on the HSB, the successor to the East German narrow-gauge system.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | K35.10 / BR 99 6001 |
| Locobase ID | 3788 |
| Railroad | Nordhausen-Wernigerode Eisenbahn |
| Country | Germany |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 99.60 |
| Gauge | Metre |
| Number Built | 1 |
| Builder | Krupp |
| Year | 1939 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.87 / 2.40 |
| Engine Wheelbase (ft / m) | 19.88 / 6.06 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
| Overall Wheelbase (engine & tender) (ft / m) | 29.23 / 8.91 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 65,709 / 29,805 |
| Engine Weight (lbs / kg) | 99,887 / 45,308 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1320 / 5 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 39.40 / 1000 |
| Boiler Pressure (psi / kPa) | 203.10 / 1400 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.54" x 19.69" / 420x500 |
| Tractive Effort (lbs / kg) | 23,602 / 10705.70 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 2.78 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 79.19 / 7.36 |
| Grate Area (sq ft / m2) | 16.79 / 1.56 |
| Evaporative Heating Surface (sq ft / m2) | 775 / 72 |
| Superheating Surface (sq ft / m2) | 271 / 25.20 |
| Combined Heating Surface (sq ft / m2) | 1046 / 97.20 |
| Evaporative Heating Surface/Cylinder Volume | 158.27 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3410 |
| Same as above plus superheater percentage | 4297 |
| Same as above but substitute firebox area for grate area | 20,265 |
| Power L1 | 9832 |
| Power MT | 989.63 |