Gotthardbahn 2-6-0 Locomotives in Switzerland


Class Details by Steve Llanso of Sweat House Media

Class Ca/Ec 3/4 (Locobase 5127)

Data from [], last accessed 19 January 2017, (First viewed August 2002). Works numbers were 1865-1872 in 1882.

These had identical boilers and fireboxes to the 0-6-0 tender locomotives built by Esslingen a year earlier (Locobase 5123). The tank engine layout with leading truck was a big change however. These are listed as being in service until 1933.


Class Ec 3/4 (Locobase 5128)

Data from [], last accessed 19 January 2017, (First viewed August 2002) Works numbers were 332-335 in 1883.

Produced a year later than the Esslingen Mogul tanks (Locobase 5127), these held more water in their side tanks, which accounts for the weight difference in an otherwise identical design.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassCa/Ec 3/4Ec 3/4
Locobase ID5127 5128
RailroadGotthardbahnGotthardbahn
CountrySwitzerlandSwitzerland
Whyte2-6-0T2-6-0T
Number in Class84
Road Numbers181-188189-192
GaugeStdStd
Number Built84
BuilderEsslingenSLM
Year18821883
Valve GearHeusingerHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.15 / 3.4011.15 / 3.40
Engine Wheelbase (ft / m)19.69 / 619.69 / 6
Ratio of driving wheelbase to overall engine wheelbase 0.57 0.57
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)106,263 / 48,200110,231 / 50,000
Engine Weight (lbs / kg)133,380 / 60,500138,009 / 62,600
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)133,380 / 60,500138,009 / 62,600
Tender Water Capacity (gals / ML)1848 / 71954 / 7.40
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.80 / 3 2.80 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.5061 / 30.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)53.10 / 135053.10 / 1350
Boiler Pressure (psi / kPa)145 / 10145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)18.9" x 25.2" / 480x64018.9" x 25.2" / 480x640
Tractive Effort (lbs / kg)20,894 / 9477.3720,894 / 9477.37
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.09 5.28
Heating Ability
Tubes (number - dia) (in / mm)207 - 1.97" / 50207 - 1.97" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.80 / 3.9012.80 / 3.90
Firebox Area (sq ft / m2)93.61 / 8.7093.61 / 8.70
Grate Area (sq ft / m2)19.37 / 1.8019.37 / 1.80
Evaporative Heating Surface (sq ft / m2)1459 / 135.601459 / 135.59
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1459 / 135.601459 / 135.59
Evaporative Heating Surface/Cylinder Volume178.30178.30
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation28092809
Same as above plus superheater percentage28092809
Same as above but substitute firebox area for grate area13,57313,573
Power L130223022
Power MT188.09181.32

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