Pfalzbahn 4-2-0 Locomotives in Germany
Class Details by Steve Llanso of Sweat House Media
Class 26 (Locobase 8251)
Data from [
].
Locobase 555 describes Die Pfalz and notes that the four Crampton-style locomotives came from Maffei.
The Wikipedia entry for these S-class engines says that Kessler supplied fourteen and Maffei four and gives the dimensions shown in the current entry. Locobase suspects that the Die Pflaz data represents the 1925 replica. On the other hand, Wikipedia notes that Maffei locomotives differed in having a larger smokebox, a smooth boiler, and slide valves over the cylinders.
In any case, the S class hauled express trains for the Pfalzbahn and were rated at 120 km/h (75 mph).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 26 |
| Locobase ID | 8251 |
| Railroad | Pfalzbahn |
| Country | Germany |
| Whyte | 4-2-0 |
| Number in Class | 18 |
| Road Numbers | 26-39 |
| Gauge | Std |
| Number Built | 18 |
| Builder | several |
| Year | 1853 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 12.99 / 3.96 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 20,283 / 9200 |
| Weight on Drivers (lbs / kg) | 20,283 / 9200 |
| Engine Weight (lbs / kg) | 53,352 / 24,200 |
| 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) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 72 / 1830 |
| Boiler Pressure (psi / kPa) | 101.50 / 700 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.02" x 24.02" / 356x610 |
| Tractive Effort (lbs / kg) | 5657 / 2565.98 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.59 |
| 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) | 10.54 / 0.98 |
| Evaporative Heating Surface (sq ft / m2) | 738 / 68.60 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 738 / 68.60 |
| Evaporative Heating Surface/Cylinder Volume | 171.95 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1070 |
| Same as above plus superheater percentage | 1070 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |