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FS Class 740
FS locomotive 740.108 in 2005
Type and origin
Power type
Steam
Builder
Gio. Ansaldo & C.,
Ernesto Breda,
Officine Meccaniche di Saronno,
Officine Meccaniche,
Officine Meccaniche e Navali,
Henschel & Sohn
Build date
1911–1923
Total produced
470
Specifications
Configuration:
• UIC
1′D h2
Gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
Leading dia.
860 mm (33.86 in)
Driver dia.
1,370 mm (53.94 in)
Length
11,040 mm (36 ft 2+5⁄8 in)
Axle load
14.1 tonnes (13.9 long tons; 15.5 short tons)
Loco weight
66.5 tonnes (65.4 long tons; 73.3 short tons)
Tender weight
Six-wheel tender: 31.9 tonnes (31.4 long tons; 35.2 short tons)
Bogie tender: 49.6 tonnes (48.8 long tons; 54.7 short tons)
Tender type
Three-axle or bogie
Fuel type
Coal
Fuel capacity
6,000 kg (13,000 lb)
Water cap.
Bogie tender: 22,000 litres (4,800 imp gal; 5,800 US gal)
Firebox:
• Grate area
2.8 m2 (30 sq ft)
Boiler pressure
12 kg/cm2 (1.18 MPa; 171 psi)
Heating surface
176.04 m2 (1,894.9 sq ft)
Superheater:
• Heating area
41.23 m2 (443.8 sq ft)
Cylinders
Two, outside
Cylinder size
540 mm × 700 mm (21.26 in × 27.56 in)
Valve gear
Walschaerts or Caprotti
Performance figures
Maximum speed
65 km/h (40 mph)
Power output
980 CV (721 kW; 967 hp)
Tractive effort
14,700 kgf (144 kN; 32,400 lbf)
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