Piraeus, Athens & Peloponnese 2-6-0 Locomotives in Greece


Class Details by Steve Llanso of Sweat House Media

Class D201, 251 (Locobase 1524)

Data from A E Durrant, Locomotives of Eastern Europe (New York: Augustus M Kelley, Publishers, 1966), pp. 57, 150. Works numbers were 1425-1429 in 1885 and 1859-1886 in 1887.

Durrant commented that these seven engines were the first of a wheel arrangement "which was to prove extremely popular on the system."


Class Z501 (Locobase 1525)

Data from diagram No 88, Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [link] as

Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007).

This was the largest single class of Mogul tanks on the SPAP. Its complement of seventeen locomotives was nearly equal to the rest of the 2-6-0 tank stud on the railway. The design had a long low profile with a large dome just behind the stack and a smaller sand dome over the second coupled axle


Class Zc, D XXVII i (Locobase 1526)

Data from A E Durrant, Locomotives of Eastern Europe (New York: Augustus M Kelley, Publishers, 1966), pp. 57, 61 Works numbers were 6467-6470 in 1911, 8375-8377 in 1926

Although this class continued an SPAP preference for Mogul tanks, the first four delivered in 1911 introduced superheating to SPAP motive power. Limited as axle loadings were on the SPAP, fitting a larger boiler forced a reduction in water tank capacity.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassD201, 251Z501Zc, D XXVII i
Locobase ID1524 1525 1526
RailroadPiraeus, Athens & Peloponnese (SPAP)Piraeus, Athens & Peloponnese (SPAP)Piraeus, Athens & Peloponnese (SPAP)
CountryGreeceGreeceGreece
Whyte2-6-0T2-6-0T2-6-0T
Number in Class71726
Road Numbers201-205, 251-252501-517530-533/Z534, 531-533, Z540-Z542
GaugeMetreMetreMetre
Number Built71726
BuilderKraussSACMKrauss
Year188518901911
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.46 / 2.58
Engine Wheelbase (ft / m)15.16 / 4.62
Ratio of driving wheelbase to overall engine wheelbase 0.56
Overall Wheelbase (engine & tender) (ft / m)15.16 / 4.62
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)60,480 / 27,43361,729 / 28,00067,200 / 30,481
Engine Weight (lbs / kg)79,520 / 36,07075,839 / 34,40083,328 / 37,797
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1320 / 5
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.10 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 1734 / 1737 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 121947.60 / 121047.20 / 1200
Boiler Pressure (psi / kPa)142 / 980142.10 / 980174 / 1200
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20.9" / 381x53114.96" x 19.69" / 380x500 (1)16.5" x 19.7" / 419x500
Low Pressure Cylinders (dia x stroke) (in / mm)22.44" x 19.69" / 570x500 (1)
Tractive Effort (lbs / kg)11,825 / 5363.747741 / 3511.2616,806 / 7623.08
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.11 7.97 4.00
Heating Ability
Tubes (number - dia) (in / mm)134 - 1.575" / 40
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.14 / 3.70
Firebox Area (sq ft / m2)53.28 / 4.95
Grate Area (sq ft / m2)13.50 / 1.2510.01 / 0.9312.60 / 1.17
Evaporative Heating Surface (sq ft / m2)790 / 73.42724 / 67.25604 / 56.13
Superheating Surface (sq ft / m2)178 / 16.54
Combined Heating Surface (sq ft / m2)790 / 73.42724 / 67.25782 / 72.67
Evaporative Heating Surface/Cylinder Volume184.81361.48123.89
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation191714222192
Same as above plus superheater percentage191714222697
Same as above but substitute firebox area for grate area7571
Power L12478
Power MT265.50

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