Kinematically linked articulated driving wheels. The forward 3 axles were rigid, the rearmost 2 swung on a bolster. All five axles were driven through a set of swing levers, the forward one pivoting from the upper bearing and the rear one (located approximately halfway back) pivoting on a yoke. As the locomotive angled around sharp curves, the links adjusted their lengths accordingly. Tonnage rating was 200 tons up 3% at 15 km/h.
95 were built. Most survived World War I to be taken into the DRG as Class 94.70, although 11 went to France and Belgium as part of war reparations.
See home.t-online.de/home/kopka.manfred/t15.htm
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | T15 / BR 94.70 |
| Locobase ID | 626 |
| Railroad | Erfurt |
| Country | Germany |
| Whyte | 0-6-4-0 |
| Number in Class | 95 |
| Road Numbers | 1882 |
| Gauge | Std |
| Number Built | 95 |
| Builder | Henschel & Sohn |
| Year | 1890 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 22.50 / 6.86 |
| Engine Wheelbase (ft / m) | 22.50 / 6.86 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,424 / 13,800 |
| Weight on Drivers (lbs / kg) | 153,931 / 69,822 |
| Engine Weight (lbs / kg) | 153,931 / 69,822 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 47.20 / 1200 |
| Boiler Pressure (psi / kPa) | 179.80 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 24.8" / 508x630 |
| Tractive Effort (lbs / kg) | 32,120 / 14569.40 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.79 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 25.50 / 2.37 |
| Evaporative Heating Surface (sq ft / m2) | 1478 / 137.36 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1478 / 137.36 |
| Evaporative Heating Surface/Cylinder Volume | 163.90 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4585 |
| Same as above plus superheater percentage | 4585 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |