FS Class 170

Specifications
Specifications
Configuration:;
• Whyte	2-4-0
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	1.383 m (54.4 in)
Driver dia.	2.03 m (80 in)
Length	15.716 m (51.56 ft)
Axle load	13.9 or 14.9 tonnes (13.7 or 14.7 long tons; 15.3 or 16.4 short tons)
Loco weight	43.4 or 43.7 tonnes (42.7 or 43.0 long tons; 47.8 or 48.2 short tons)
Fuel type	Coal
Boiler pressure	10 bar (1.0 MPa; 150 psi)
Heating surface	96.6 or 100.75 m2 (1,039.8 or 1,084.5 sq ft)
Cylinders	2 outside
Cylinder size	430 mm × 620 mm (17 in × 24 in)
Valve gear	Gooch

Type and origin
Type and origin
Power type	Steam
Builder	Koechlin, Maffei, Société Franco-Belge
Build date	1873–1889
Total produced	73

FS Class 170
earlier RM 1501-1573
earlier SFAI
FS Class 170; earlier RM 1501-1573; earlier SFAI
	Model of an FS Class 170 locomotive
Power type
Type and origin
Power type	Steam
Builder	Koechlin, Maffei, Société Franco-Belge
Build date	1873–1889
Total produced	73
Configuration:;
Specifications
Configuration:;
• Whyte	2-4-0
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	1.383 m (54.4 in)
Driver dia.	2.03 m (80 in)
Length	15.716 m (51.56 ft)
Axle load	13.9 or 14.9 tonnes (13.7 or 14.7 long tons; 15.3 or 16.4 short tons)
Loco weight	43.4 or 43.7 tonnes (42.7 or 43.0 long tons; 47.8 or 48.2 short tons)
Fuel type	Coal
Boiler pressure	10 bar (1.0 MPa; 150 psi)
Heating surface	96.6 or 100.75 m2 (1,039.8 or 1,084.5 sq ft)
Cylinders	2 outside
Cylinder size	430 mm × 620 mm (17 in × 24 in)
Valve gear	Gooch
Maximum speed
Performance figures
Maximum speed	80 km/h (50 mph)
Tractive effort	4,070 or 4,260 kgf (9,000 or 9,400 lbf)

FS Class 170 was a class of 2-4-0 steam locomotives acquired by Italian State Railways (FS) from Rete Mediterranea (RM) on nationalization in 1905.

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