Data from Christian Lindecke's website [] (visited 28 November 2003) (translated by Google). These express engines were the first built for the Eastern line of the K.Bay.St.E. They were Cramptons with the drivers trailing the Belpaire firebox. Both carrying axles were suspended from the frame rather than riding in a bogie. Later engines of a 2-2-2 arrangement arrived in 1859.
Starting in 1869, the Regensburg shops reversed the wheel arrangement, creating B-class 2-4-0s and doubtless improving the adhesive weight.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | A |
| Locobase ID | 5753 |
| Railroad | Bavarian State (Ostbahn) |
| Country | Germany |
| Whyte | 4-2-0 |
| Number in Class | 12 |
| Road Numbers | A1-A12 |
| Gauge | Std |
| Number Built | 12 |
| Builder | Maffei |
| Year | 1857 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| 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) | 24,251 / 11,000 |
| Weight on Drivers (lbs / kg) | 24,251 / 11,000 |
| Engine Weight (lbs / kg) | 57,100 / 25,900 |
| 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) | 72 / 1828 |
| Boiler Pressure (psi / kPa) | 87 / 600 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.51" x 24.02" / 394x610 |
| Tractive Effort (lbs / kg) | 5935 / 2692.07 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.09 |
| 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) | 12.16 / 1.13 |
| Evaporative Heating Surface (sq ft / m2) | 895 / 83.20 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 895 / 83.20 |
| Evaporative Heating Surface/Cylinder Volume | 170.39 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1058 |
| Same as above plus superheater percentage | 1058 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |