GR Class 700 (USATC S200)

USATC S200 (GR class 700)
Type & Origin
Power type	Steam
Designer	American Locomotive Company (60 (additional 15 for GW)) Baldwin Locomotive Works (70 (additional 5 for GW)) Lima Locomotive Works (70 (additional 5 for GW)) Gacha Railways (45)
Builder	American Locomotive Company Baldwin Locomotive Works Lima Locomotive Works Gacha Railways
Total Production	200 (real life) ~90 (Lunime Versions) ~290 (total)
Specifications
Whyte	2-8-2
UIC	1’D1 H2
Gauge	4’ 8 1/2”
Leading Diameter	30 in (0.762 m)
Driving Diameter	60 in (1.524 m)
Trailing Diameter	42 in (1.067 m)
Tender Diameter	42 in (1.067 m)
Minimum Curve	4.15 Chains (21°, 274.37 ft or 83.63 m)
Wheelbase	68 ft 4 in (20.83 m)
Loco Weight	200,000 lb (91,000 kg)
Tender Weight	123,000 lb (56,000 kg)
Loco & Tender Weight	323,000 lb (146,000 kg)
Tender Type	USATC standard
Fuel Type	Coal or oil
Fuel Cap	18,000 lb (8,200 kg) coal 2,500 US gallons (9,500 L; 2,100 imp gal) oil
Water Cap	6,500 US gallons (25,000 L; 5,400 imp gal)
Firebox	Round top
Fire Area	47 sq ft (4.4 m2)
Boiler Pressure	200 psi (1.38 MPa)
Safety Valves	Pop
Tubes & Flues	1,985 sq ft (184.4 m2)
Superheater Type	Schmidt
SuperHeater Area	625 sq ft (58.1 m2)
Cylinders	2, outside
Cylinder Size	21 in × 28 in (533 mm × 711 mm)
Valve Gear	Walschearts
Valve Type	10-inch (254 mm) piston valves
Train Heating	Steam
Loco Brake	Steam
Train Brakes	Air or vacuum
Safety Systems	GRATC (Gacha Railways Automatic Train Control)
Couplings	Buffers & Chains
Performance Figures
Maximum Speed	70
Tractive Effort	35,000 lbf (155.7 kN)
Career
Operator	Gacha Railways
Operator Class	Class 700
Power Class	7P 8F
N°s In Class	90
Fleet N°s	700 to 789
Nicknames	Yankees
Axle Load Class	RA 5
Delivery	~1943
First Run	May 1943
Last Run	~1967
Retired	1961 to 1967
Preserved Units	28
Preserved Units	28
Disposition	28 preserved remainder scrapped

Overview

The United States Army Transportation Corps (USATC) S200 Class (Gacha Railways class 700) is a class of 2-8-2 steam locomotive. They were introduced in 1941 and lent-leased to the United Kingdom for use in the Middle East during World War II. They are the most mass produced locomotives having 750 built.

Construction

The design is based on the USRA 2-8-2 Heavy/light mikados.

Service

Order N° GW219848 Arrived in may 1943, and Numbered 700 (there’s no Gacha railways locomotives that covers the 700 space) they are mass produced. Built by ALCO, Baldwin, Lima, and in 1947, at the Gacha railways Chibion works.

Retirement

When the Diesels came in 1955, they are surplus to requirements, all are retired.

Preservation

28 700 classes are preserved, including: Prototype 700, 705, 711, 726-50, 753 & 755

Locos 753 and 755

Locos 753 and 755 were sold to Xkour in 1963, Both are modified with larger tenders, making their fuel consumption a joke, and the original tenders are given back in 1970, Both retired in 1993, 753 is on static display (now awaiting transfer for an overhaul) while 755, is operational as of 2023.

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