Turkish State 4-6-0 Locomotives in Turkey

Class Details by Steve Llanso of Sweat House Media

Class Smyrna-Cassaba et Prolong (Locobase 1622)

Data from "2-C-gekuppelte Vierzylinder-Verbund-Schnellzuglokomotive der orientalischen Bahnen", Die Lokomotive, pp. 44-46. See also A[nthony] E[dward] Durrant, The steam loc

Karl Golsdorf designed this class, placing the HP cylinders outside and just ahead of the coupled axles. High-pressure steam came from the steam dome through an external pipe into the steam chest on top of the cylinder. LP cylinders were inside, but the piston valves were outside the frame and between the bogie axles.

Originally supplied to Smyrna-Cassaba et Prolonguements (SCP) in two batches -- four in 1900 from Wiener Neustadt, six from Maffei in 1909-1910. Taken into TCDD in 1934 as 35.001-009.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassSmyrna-Cassaba et Prolong
Locobase ID1622
RailroadTurkish State (TCDD)
Number in Class10
Road Numbers61-70
Number Built10
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.81 / 3.60
Engine Wheelbase (ft / m)25.10 / 7.65
Ratio of driving wheelbase to overall engine wheelbase 0.47
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)27,337 / 12,400
Weight on Drivers (lbs / kg)81,571 / 37,000
Engine Weight (lbs / kg)117,727 / 53,400
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)3168 / 12
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)45 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)59.10 / 1500
Boiler Pressure (psi / kPa)181.30 / 12.50
High Pressure Cylinders (dia x stroke) (in / mm)14.96" x 23.62" / 380x600
Low Pressure Cylinders (dia x stroke) (in / mm)20.87" x 23.62" / 530x600
Tractive Effort (lbs / kg)18,211 / 8260.38
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.48
Heating Ability
Tubes (number - dia) (in / mm)175 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.78 / 4.20
Firebox Area (sq ft / m2)97.95 / 9.10
Grate Area (sq ft / m2)19.91 / 1.85
Evaporative Heating Surface (sq ft / m2)1341 / 124.58
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1341 / 124.58
Evaporative Heating Surface/Cylinder Volume279.07
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3610
Same as above plus superheater percentage3610
Same as above but substitute firebox area for grate area17,758
Power L13496
Power MT283.46

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