Data from [], last accessed 21 June 2011. Rhatische Bahn history at [] and from [], last accessed 30 December 2006. Works numbers were 1613-1614.
The L-D paid 68,4000 Swiss Francs of these two engines and operated them on the steep grades for decades. In 1895, the Landquart-Davos changed its name to the Rhaetia Bahn and the engines were numbered 21-22.
After almost 20 years of service, the RB replaced the boiler and added a leading truck to the pair; the result is seen in locobase 12746.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | G 2/2 + 2/2 |
Locobase ID | 12745 |
Railroad | Landquart-Davos / Rhaetia |
Country | Switzerland |
Whyte | 0-4-4-0T |
Number in Class | 2 |
Road Numbers | 21-22 |
Gauge | Metre |
Number Built | 2 |
Builder | Maffei |
Year | 1891 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 10.50 / 1.60 |
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) | / 10,125 |
Weight on Drivers (lbs / kg) | 89,287 / 40,500 |
Engine Weight (lbs / kg) | 89,287 / 40,500 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 89,287 / 40,500 |
Tender Water Capacity (gals / ML) | 792 / 3 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.30 / 1 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 41.30 / 1050 |
Boiler Pressure (psi / kPa) | 174 / 1200 |
High Pressure Cylinders (dia x stroke) (in / mm) | 12.99" x 21.65" / 330x550 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 19.29" x 21.65" / 490x550 |
Tractive Effort (lbs / kg) | 18,002 / 8165.58 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.96 |
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) | 15.06 / 1.40 |
Evaporative Heating Surface (sq ft / m2) | 863 / 80.20 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 863 / 80.20 |
Evaporative Heating Surface/Cylinder Volume | 259.87 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2620 |
Same as above plus superheater percentage | 2620 |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |