The first of many German "spinning wheels," these Borsig-built engines ran on the relatively flat North German railroads (such as the Berlin-and-Anhalt). They differed in many ways from the earlier BORSIG 4-2-2, especially in frame construction, boiler and firebox, and in the use of a single carrying axle. Later versions had horizontal cylinders and "haystack" (aka "Gothic") firebox, (1847), inside slide valves and Borsig expansion gear operating an auxiliary slide valve over the main valve.
These engines proved reliable and competent, inspiring many similar engines including the OKER (see separate entry) for the Cologne-and-Minden.
Reder (1974)
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | BEUTH |
Locobase ID | 711 |
Railroad | Berlin & Anhalt |
Country | Prussia |
Whyte | 2-2-2 |
Number in Class | |
Road Numbers | |
Gauge | Std |
Number Built | |
Builder | Borsig |
Year | 1844 |
Valve Gear | |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | |
Engine Wheelbase (ft / m) | 12.51 / 3.81 |
Ratio of driving wheelbase to overall engine wheelbase | |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 20,066 / 9102 |
Engine Weight (lbs / kg) | 20,066 / 9102 |
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) | 33 / 16.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 60.70 / 1542 |
Boiler Pressure (psi / kPa) | 78.20 / 550 |
High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 22" / 330x559 |
Tractive Effort (lbs / kg) | 4071 / 1846.58 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.93 |
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) | 8.90 / 0.83 |
Evaporative Heating Surface (sq ft / m2) | 501 / 46.56 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 501 / 46.56 |
Evaporative Heating Surface/Cylinder Volume | 148.24 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 696 |
Same as above plus superheater percentage | 696 |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |