Nordost Bahn 0-4-0 Locomotives in Switzerland


Class Details by Steve Llanso of Sweat House Media

Class E (Locobase 20551)

Data from "German Four-Wheeled Tank Locomotive", Railroad Gazette, Volume 15 (14 September 1883), p. 599; and "NOB E 2/2", Wikipedia . Esslingen works numbers were 1259-1262, 1312-1315 in 1873; 1341-1343 in 1874; 1457-1459 in 1875. SLM works numbers were 91-100 in 1876.

The short RG report and illustration included the comment that placing the water tank under the boiler required putting the Williams-Howe (aka Stephenson) link motion outside along with the cylinders and valves. Another adjustment was to move the two axles relatively far apart.

Preceded by eight home-built locomotives (four each in 1865 and 1868), the production variants by Esslingen and SLM had higher-pressure boilers. The last three Esslingens and all of the SLMs (thirteen of the 24) rolled on wheelbases lengthened by 200 mm (7.87") and were rated at 55 kph (34 mph).

The class enjoyed a long career, to the point that they received new boilers in 1900-1904 that were pressed to 10 bar (145 psi).

Principal Dimensions by Steve Llanso of Sweat House Media

ClassE
Locobase ID20551
RailroadNordost Bahn (NOB)
CountrySwitzerland
Whyte0-4-0WT
Number in Class24
Road Numbers71-78, 97-102, 181-199/8071-8098
GaugeStd
Number Built24
Builderseveral
Year1873
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.20 / 2.50
Engine Wheelbase (ft / m) 8.20 / 2.50
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 8.20 / 2.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,438 / 25,600
Engine Weight (lbs / kg)56,438 / 25,600
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)56,438 / 25,600
Tender Water Capacity (gals / ML)713 / 2.70
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.20 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54.70 / 1389
Boiler Pressure (psi / kPa)145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)12.6" x 23.62" / 320x600
Tractive Effort (lbs / kg)8449 / 3832.41
Factor of Adhesion (Weight on Drivers/Tractive Effort) 6.68
Heating Ability
Tubes (number - dia) (in / mm)135 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.91 / 3.02
Firebox Area (sq ft / m2)55.54 / 5.16
Grate Area (sq ft / m2)11.95 / 1.11
Evaporative Heating Surface (sq ft / m2)744 / 69.12
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)744 / 69.12
Evaporative Heating Surface/Cylinder Volume218.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1733
Same as above plus superheater percentage1733
Same as above but substitute firebox area for grate area8053
Power L13962
Power MT309.53

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