Chesapeake and Ohio 1642

Chesapeake and Ohio 1642
Type and origin References: Power type Steam Designer Advisory Mechanical Committee Builder Lima Locomotive Works Order number 1188 Serial number 8799 Model C&O H-8
Specifications Configuration: ​  • Whyte 2-6-6-6 Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Leading dia. 36 in (914 mm) Driver dia. 67 in (1,702 mm) Trailing dia. 36 in (914 mm) (lead & intermediate axle) 43 in (1,092 mm) (trail axle) Tender wheels 36 in (914 mm) Minimum curve 319 ft 7+1⁄2 in (97.42 m) radius/ 18° Wheelbase Locomotive: 62 ft 6 in (19.05 m) Overall: 112 ft 11 in (34.42 m) Length Locomotive: 76 ft 8+3⁄8 in (23.38 m) Overall: 125 ft 7+7⁄8 in (38.30 m) Width 11 ft 1 in (3.38 m) Height 16 ft 7 in (5.05 m) Frame type Cast Steel Axle load 86,700 lb (43.4 short tons) Adhesive weight 507,900 lb (254.0 short tons) Loco weight 771,300 lb (385.7 short tons) Tender weight 426,100 lb or 431,700 lb Total weight 1,183,540 to 1,208,900 lb (592 to 604 short tons) Tender type 25-RB Fuel type Coal Fuel capacity 25 tons (50,000 lb) Water cap. 25,000 US gal (95,000 L) Sandbox cap. 12,000 lb (6 short tons) Fuel consumption Up to 8 short tons of coal / hr Up to 14,000 US gal of water / hr Firebox: ​  • Grate area 135.20 sq ft (12.560 m2) Boiler: ​  • Model Fire Tube  • Diameter 109 in (2,769 mm)  • Tube plates 23 ft (7 m) Boiler pressure 260 lbf/in2 (1.79 MPa) Safety valve Pop, 3+1⁄2 in (89 mm) 4 per locomotive Feedwater heater Worthington SA 14,400 or 16,200 US gal/hr cap Heating surface: ​  • Firebox 600 sq ft (56 m2)  • Tubes and flues 6,478 sq ft (602 m2)  • Total surface 7,240 sq ft (673 m2) Superheater: ​  • Type Type E  • Heating area 3,186 sq ft (296 m2) Cylinders Four Cylinder size 22.5 in × 33 in (572 mm × 838 mm) Valve gear Baker-long travel Valve type Piston valves Valve travel 8 in (203 mm) Valve lap 1+7⁄16 in (37 mm) Valve lead 3⁄16 in (5 mm) Train heating Steam heat Loco brake Pneumatic, Schedule 8-ET Train brakes Pneumatic
Performance figures Maximum speed 70 mph (110 km/h) Power output 6,500–7,500 hp (4,800–5,600 kW) @ ~46 mph (74 km/h) (drawbar) Tractive effort 110,211 lbf (490.24 kN) Factor of adh. 4.61
Career Operators Chesapeake and Ohio Class H-8 Numbers 1642 Nicknames Allegheny Disposition Scrapped

Chesapeake and Ohio 1642 was a class "H-8" 2-6-6-6 steam locomotive built by the Lima Locomotive Works at Lima, Ohio for the Chesapeake and Ohio Railway.

On June 9, 1953, No. 1642 suffered a crown sheet failure and subsequent boiler explosion due to a prolonged low water condition at Hinton, WV. The crew members were killed. The locomotive was not rebuilt, as the class was undergoing retirement by then.