Sudbahn 0-6-0 Locomotives in Austria


Class Details by Steve Llanso of Sweat House Media

Class 27 (Locobase 7786)

Data from [], accessed 16 August 2006.

The 0.7% grade from Wiener Neustadt to Gloggnitz demanded more traction and the Haswell supplied these four -- FAHRAFELD, RAXALPE, LEOBERSDORF, and FELIXDORF -- which proved capable of pulling 300 tons up the hill. The design featured the use of equalization between the rear two axles. Cylinders drove outside, valves were actuated inside.

When tested on the more challenging Semmeringbahn in 1854, however, they could only manage 90 tons each. Over the next several years the engines operated in Hungary, although their retirement dates cannot be determined.


Class 34 (Locobase 6954)

Data from Titre Exposition universelle internationale de 1878 a Paris. Rapports du jury internationale..Volume Groupe VI - Classe 64. Rapport sur le materiel des chemins de fer. p. 50 (cnum.cnam.fr/CGI/fpage.cgi?8XAE277-11.1/54/100/312/0/0 (accessed 1 September 2005). Works numbers were 232-236 in 1878.

The jury describes this as similar to the Bourbonnnais type of freight locomotive. The design is credited to the Sudbahn's chief engineer Gottschalk, who sought a dual-purpose engine that could pull passenger trains up the Brenner Line's 2.5% grade at 17-20 kph (10.6-12.4 mph) or freight trains on the Sudbahn's main line. All three axles were located ahead of the Belpaire firebox. Such was the size and number of tubes, said the jury, that the operator was assured of "une grande production de vapeur".

Principal Dimensions by Steve Llanso of Sweat House Media

Class2734
Locobase ID7786 6954
RailroadSudbahnSudbahn
CountryAustriaAustria
Whyte0-6-00-6-0
Number in Class4
Road Numbers797-800
GaugeStdStd
Number Built4
BuilderStEGFloridsdorf
Year18471878
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.80 / 3.2910.53 / 3.21
Engine Wheelbase (ft / m)10.80 / 3.2910.53 / 3.21
Ratio of driving wheelbase to overall engine wheelbase11
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)30,865 / 14,000
Weight on Drivers (lbs / kg)60,407 / 27,40090,389 / 41,000
Engine Weight (lbs / kg)60,407 / 27,40090,389 / 41,000
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)34 / 1750 / 25
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)55.90 / 142049.80 / 1265
Boiler Pressure (psi / kPa)72.50 / 5145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)16.54" x 22.83" / 420x58018.9" x 24.02" / 480x610
Tractive Effort (lbs / kg)6885 / 3122.9921,235 / 9632.05
Factor of Adhesion (Weight on Drivers/Tractive Effort) 8.77 4.26
Heating Ability
Tubes (number - dia) (in / mm)181 - 2.047" / 52
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14.01 / 4.27
Firebox Area (sq ft / m2)93.61 / 8.70
Grate Area (sq ft / m2)18.29 / 1.70
Evaporative Heating Surface (sq ft / m2)1173 / 1091454 / 135.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1173 / 1091454 / 135.10
Evaporative Heating Surface/Cylinder Volume206.61186.42
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2652
Same as above plus superheater percentage2652
Same as above but substitute firebox area for grate area13,573
Power L12966
Power MT217.03

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