China Railways SY

Type and origin
Type and origin
Power type	Steam
Builder	Tangshan Railway Vehicle; Changchun Railway Vehicle; Jinan Railway Vehicles Equipment; Tongling Railway Vehicle; Sifang General Repair Works;
Model	SY
Build date	1960–1999
Total produced	1,800+

SY
上游
SY; 上游
	SY-1721 idling at the Tangshan Works, December 2005
Power type
Type and origin
Power type	Steam
Builder	Tangshan Railway Vehicle; Changchun Railway Vehicle; Jinan Railway Vehicles Equipment; Tongling Railway Vehicle; Sifang General Repair Works;
Model	SY
Build date	1960–1999
Total produced	1,800+
Configuration:;
Specifications
Configuration:;
• Whyte	2-8-2
• UIC	1’D1’
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	840 mm (33 in; 2.76 ft)
Driver dia.	1,370 mm (54 in; 4.49 ft)
Trailing dia.	1,000 mm (39 in; 3.3 ft)
Wheelbase:
• Engine	31 ft 4 in (9.55 m)
• Drivers	14 ft 6 in (4.42 m)
Length	21,643 mm (852.1 in; 71.007 ft)
Width	3,300 mm (130 in; 10.8 ft)
Height	4,446 mm (175.0 in; 14.587 ft)
Adhesive weight	70 t (150,000 lb; 70,000 kg)
Loco weight	84 t (185,000 lb; 84,000 kg)
Tender weight	54.5 t (120,000 lb; 54,500 kg)
Tender type	Sloped-back
Fuel type	Coal
Fuel capacity	9.5 t (21,000 lb; 9,500 kg)
Water cap.	25,000 L (6,600 US gal)
Firebox:
• Grate area	4.57 m2 (49.2 sq ft)
Boiler pressure	210 psi (1,400 kPa)
Heating surface	161 m2 (1,733.0 sq ft)
Superheater:;
• Heating area	65.5 m2 (705.0 sq ft)
Cylinders	Two
Cylinder size	530 mm × 710 mm (21 in × 28 in)
Valve gear	Walschaerts
Maximum speed
Performance figures
Maximum speed	50 mph (80.47 km/h)
Power output	1,500 hp (1,100 kW)
Tractive effort	20,475 kgf (45,140 lbf; 200.79 kN)
Factor of adh.	4.05
Preserved
Career
Preserved	42
Disposition	42 preserved (39 in China, 2 in USA, 1 in South Korea) remainder scrapped.
	References:

China Railways SY is a (Chinese: 上游; pinyin: Shàng Yóu; lit. 'Aim High') 2-8-2 Mikado locomotive operated by the China Railway. It was built mostly by Tangshan Locomotive and Rolling Stock Works between 1960 and 1999.