Reichenberg-Gablonz-Tannwalder 0-8-2 Locomotives in Austria


Class Details by Steve Llanso of Sweat House Media

Class 21 G/169/404 (Locobase 4662)

Data from [link] (visited December 2002)

This class was supplied to the Reichenberg-Gablonz-Tannwalder Eisenbahn, an 7.4-km (4.6 mile) Abt-system double-rack railway built from 1899-1902. In addition to their road numbers, the trio also had names:Dessendorf, Ignaz Ginzkey, and Polaun.

This line had four tunnels and gradients pitched at up to 5.8%. To tackle such a profile, the locomotive had the characteristic 420 mm x 450 mm (16.54 x 17.72") cylinders driving the 688-mm (27.09") double-rack gearing. Using its conventional drivers, the locomotive could reach 30km/h; on the rack, top speed was 15 km/h.

Like all of Austria's loks, this class cycled through several identities beginning with the Abt rack railway that ordered it originally. The Austrian part of the Austro-Hungarian empires' own kkStB classed as a 169.50-52 In 1925, they were reclassed by the nascent Czechoslovakian CSD as 404.001-003. During the German occupation period (1938-1945)they were the DRB's BR 97.601 1-3. In 1946, they regained their CSD class 404 ID.

404.103 was the only engine to be preserved, eventually going on display in non-operating condition at the Jaromerban a Vas+ti M+zeumban.

Principal Dimensions by Steve Llanso of Middle Run Media
Class21 G/169/404
Locobase ID4662
RailroadReichenberg-Gablonz-Tannwalder
CountryAustria
Whyte0-8-2RT
Number in Class3
Road Numbers21-23
GaugeStd
Number Built3
BuilderFloridsdorf
Year1901
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.33 / 3.15
Engine Wheelbase (ft / m)21.82 / 6.65
Ratio of driving wheelbase to overall engine wheelbase 0.47
Overall Wheelbase (engine & tender) (ft / m)21.82 / 6.65
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)119,049 / 54,000
Engine Weight (lbs / kg)146,607 / 66,500
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1320 / 5
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.90 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41.30 / 1049
Boiler Pressure (psi / kPa)174 / 1200
High Pressure Cylinders (dia x stroke) (in / mm)19.69" x 19.69" / 500x500
Tractive Effort (lbs / kg)27,337 / 12399.87
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.35
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)118.40 / 11
Grate Area (sq ft / m2)25.73 / 2.39
Evaporative Heating Surface (sq ft / m2)1785 / 165.80
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1785 / 165.80
Evaporative Heating Surface/Cylinder Volume257.23
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4477
Same as above plus superheater percentage4477
Same as above but substitute firebox area for grate area20,602
Power L14103
Power MT

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