FS Class ALn 772

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FS ALn 772
Type and origin Power type Diesel Builder Fiat Ferroviaria-Officine Meccaniche (OM) Build date 1937 – 1957 Total produced 327 total: 100 Fiat; 219 OM (4 series); 8 special
Specifications Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Wheel diameter 900 mm (35.43 in) Wheelbase 16 m (52 ft 5+7⁄8 in) Length 24.560 m (80 ft 6+7⁄8 in) Width 3.160 m (10 ft 4+3⁄8 in) Height 3.564 m (11 ft 8+3⁄8 in) Loco weight ALn 772: 37 t (36 long tons; 41 short tons) SD80 version: 34.2 t (33.7 long tons; 37.7 short tons) Prime mover 2 x OM-Saurer BXD Engine type 6-cyl inline engine Cylinders 6 Cylinder size 2.38 L (145 cu in) Transmission hydraulic OM-SRM-DF 1,15
Performance figures Maximum speed 130 km/h (81 mph) Power output 220 kW (299 PS)
Career Operators Ferrovie dello Stato Nicknames Littorina Locale Italy, Poland First run May 1940 Retired April 12, 1986

The ALn 772 (Automotrice Leggera a nafta, Light Diesel motor car) series are a group of Diesel railcars built for the Italian public railway company Ferrovie dello Stato (FS) between the 1930s and the 1950s. As the first project in Italy to abandon the automobile-derived design and adopt a comprehensive "rolling stock" approach, it represents the link between the simple and sturdy Littorine and the modern Diesel units.