Railways of the Greek State Ia (Iota-alpha)
When the Greek railway network was connected to the main European network, the Hellenic State Railway needed powerful locomotives for passenger service on lines with grades of two percent and curves of 300 meters. Now, the complete journey from Paris to Piraeus was to be completed in less than 60 hours. After the start of World War I, the ordering of locomotives from other European countries had become difficult.
So they were built by ALCO-Schenectady and assembled in Greece. With the wheel arrangement 2-8-2, they had drivers of 60 inches or 1,524 mm. Built to operate with high-grade coal from South Wales, whey had a grate of 34.7 square feet or 3.22 m² and were superheated. They could reach a speed of 80 km/h on level lines and on a two percent grade, they could haul 250 tonnes with 25 km/h.
Technical data
General
- Built
- 1915
- Manufacturers
- ALCO
- Wheel arrangement
- 2-8-2 (Mikado)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 9.80 m
- Total wheelbase
- 17.27 m
- Service mass
- 85 t
- Adhesion mass
- 59.8 t
- Total mass
- 133 t
- Rigid wheelbase
- 4.80 m
- Axle load
- 15 t
- Water capacity
- 18,927 l
- Fuel capacity
- 8 t (coal)
Boiler
- Grate area
- 3.224 m²
- Firebox surface
- 13.935 m²
- Tube heating surface
- 174.751 m²
- Evaporative heating surface
- 188.686 m²
- Superheater surface
- 42.55 m²
- Total heating surface
- 231.2 m²
Power plant
- Driver diameter
- 1,524 mm
- Boiler pressure
- 12.1 bar
- Expansion type
- simple expansion
- Cylinders
- two, 584 x 660 mm
Power
- Power source
- steam
- Estimated power
- 969 kW (1,317 PS)
- Starting effort
- 151.7 kN
Calculated values
- Factor of adhesion
- 1 : 3.87
- Optimal speed
- 39 km/h
- Power-to-weight ratio
- 11.4 kW/t
- Heating Surface Equivalent
- 343.5 m²
- Cylinder volume/HSE
- 1 : 1,030.80
- Adhesive weight/Total
- 1 : 1.42
- Tractive force/Heating surface
- 1 : 13.70
- Grate area/Heating surface
- 1 : 71.72
- Firebox/Tube surface
- 1 : 12.54
- Total/Superheater
- 1 : 4.43
