Data from Christian Lindecke's website [] (visited 28 Nov 2003) (translated by Google).
The Pfalzbahn's first passenger locomotive was based on the K.Bay.St.E's B VI class of 1863. After the first eight were delivered, however, the design showed serious instability because of its short wheelbase and large overhangs at each end.
The other 21 had a wheelbase of 2.3 m (7.55 ft) and an increase in the distance between the leading coupled axle and the front carrying axle from 1.6 m (5' 3") to 1.75 m (5' 9") and a larger firebox based on the Crampton model, but, says Lindecke, riding qualities improved only marginally because the cylinders still led the front, carrying axle.
The first 8 were out of service soon after the turn of the century. Most of the remaining engines were scrapped between 1910 to 1917 with just 2 given DRG numbers (34.7401-02) in 1923. They were retired the next year.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | P 1 |
| Locobase ID | 5758 |
| Railroad | Pfalzbahn (Palatinate) |
| Country | Germany |
| Whyte | 2-4-0 |
| Number in Class | 29 |
| Road Numbers | 88-95, 118-138 |
| Gauge | Std |
| Number Built | 29 |
| Builder | Karlsruhe |
| Year | 1870 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.58 |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 26,455 / 12,000 |
| Weight on Drivers (lbs / kg) | 47,620 / 21,600 |
| Engine Weight (lbs / kg) | 68,343 / 31,000 |
| 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) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 64 / 1626 |
| Boiler Pressure (psi / kPa) | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x558 |
| Tractive Effort (lbs / kg) | 10,846 / 4919.67 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.39 |
| 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) | 10.65 / 0.99 |
| Evaporative Heating Surface (sq ft / m2) | 1098 / 102 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1098 / 102 |
| Evaporative Heating Surface/Cylinder Volume | 214.47 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1544 |
| Same as above plus superheater percentage | 1544 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |