Thessalian Rwy 2-6-2 Locomotives in Greece


Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 1534)

Tubize delivered 5 in 1908, Maffei 2 in 1912, and Tubize finished off the class with 3 in 1920.


Class 30 (Locobase 1535)

Data from A E Durrant The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1972). Works numbers were 1497-1499 and 1505-1506 in June 1935.

These were five of the 46 steam locomotives operated by the Thessaly Railways. Begun in 1882, the network came together in segments: From Volos, heading west then north 61 km (31 miles) to Larissa. The Volos line continued northwest from Velestinon northwest for 142 km (81 miles) to Kalampaka. Within this section the railway met the standard-gauge Athens-Larissa-Thessaloniki at Palaiofarsalos. This section had a maximum gradient of 3% between Velestinon and Aerinon.

Principal Dimensions by Steve Llanso of Sweat House Media

Class2030
Locobase ID1534 1535
RailroadThessalian RwyThessalian Rwy
CountryGreeceGreece
Whyte2-6-2T2-6-2T
Number in Class105
Road Numbers20-2930-34
GaugeMetreMetre
Number Built105
BuilderseveralKrupp
Year19081935
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
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)
Weight on Drivers (lbs / kg)60,480 / 27,43362,720 / 28,449
Engine Weight (lbs / kg)76,160 / 34,54692,736 / 42,064
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)76,160 / 34,54692,736 / 42,064
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 1735 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51.20 / 130051.20 / 1300
Boiler Pressure (psi / kPa)174 / 12185 / 12.80
High Pressure Cylinders (dia x stroke) (in / mm)15.7" x 22" / 400x56015" x 23.6" / 381x599
Tractive Effort (lbs / kg)15,665 / 7105.5316,309 / 7397.65
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.86 3.85
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)11.80 / 1.1013.50 / 1.25
Evaporative Heating Surface (sq ft / m2)557 / 51.77599 / 55.67
Superheating Surface (sq ft / m2)178 / 16.54235 / 21.84
Combined Heating Surface (sq ft / m2)735 / 68.31834 / 77.51
Evaporative Heating Surface/Cylinder Volume112.99124.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation20532498
Same as above plus superheater percentage25463197
Same as above but substitute firebox area for grate area
Power L1
Power MT

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