The Baldwin RS-4-TC is a diesel-electricswitcher locomotive built by the Baldwin-Lima-Hamilton Corporation between July 1953 and January 1955. The RS-4-TCs were powered by a supercharged twelve-cylinder diesel engine rated at 400 horsepower (298 kW), and rode on a pair of two-axle trucks in a B-B wheel arrangement. 74 of these models were built mainly for the Army while a few of them went to the Air Force.
The RS-4-TCs were originally built with Caterpillar D397 diesel engines. The Caterpillar D397s were chosen for their high speed and small bore and stroke for quick startup and shutdowns. There are two number systems for the RS-4-TCs, the 1200 series or the 4000 series. The locomotives in both series were the same, except the 1200s were built for domestic service and had fixed axle, standard gauge trucks while the 4000s were built for foreign service and had adjustable-gauge trucks for use on foreign narrow and wide gauge tracks. Even though the 4000s were built for foreign service, very few were actually deployed overseas, the vast majority served in the United States.
At the end of the Korean War, most RS-4-TCs were placed into storage while their World War II counterparts were sold as surplus. Today, the majority of RS-4-TCs have been sold as surplus and are currently serving tourist and shortline railroads with a few still in military service.
In the 1980s, many RS-4-TCs were rebuilt by railroad contractors into RS-4-TC 1A locomotives. The rebuilding included replacing the CAT D397 diesel engines with CAT 3508 engines rated at 500 HP, replacing the adjustable-gauge trucks with non adjustable trucks, and replacing the electrical control system with an EMD system and control stand. These are identifiable from the exterior by a single exhaust stack near the rear of the hood rather than two small stacks towards the front.
Technical detailsedit
The diesel engine is a twelve-cylinder, turbocharged, water-cooled, four-cycle, V-type engine used to provide power. It is directly connected to the main generator. The traction motors are axle hung and supported on the truck transoms by spring-loaded suspension. One motor is geared to each axle through a single set of gears with a ratio of 14:72. The radiator keeps the engine at a proper operating temperature between 100 and 198F (37.7 and 92.2 °C). Two externally mounted battery boxes, one on each side of the locomotive, provide ventilated compartments to house the eight batteries. Two main reservoir tanks, one on each side of the locomotive, provide a means of storing air for the air system. The main generator furnishes direct-current power over a wide range of voltage at various speeds up to 1200 rpm. It is separately excited by the exciter generator mounted on the generator frame. The generator also acts as a starting motor when the start button is pushed and the battery switch is closed. The fuel tank can hold 500 gallons (1892 liters) of diesel fuel for engine operation. Two fill pipes and two sight glasses, one on each side of the locomotive, provide a means of filling the tank and monitoring the level of fuel. The blower provides forced ventilation for the traction motors which require adequate cooling. It is belt-driven from the main generator shaft.[1]
The master controller contains the throttle, reverser, brake controls, and other controls and indicators used by operator to operate and monitor the locomotive and is located in the cab of the locomotive. The equipment cabinet contains the automatic switching relays and contactors and is located in the cab of the locomotive. Both high and low voltage are present in the electrical equipment cabinet when the locomotive is in operation.[1]
Name designationedit
RS - Road Switching Service 4 - 4th military type TC - Transportation Corps (as in Army Transportation Corps)
^ abHeadquarters, Departments of the Army and the Air Force (January 8, 1987). TECHNICAL MANUAL, Intermediate Direct Support and Intermediate General Support, Maintenance Manual, Locomotive, Diesel-Electric, 56-1/2-Inch Gage, 60 Ton, 500 HP, 0-4-4-0 Wheel, Model RS-4-TC-1A, NSN 2210-01-158-2978 (Technical report). TM 55-2210-223-34.
"The Baldwin Diesel Zone - RS-4-TC". Retrieved 24 February 2009.
"Utah Rails - RS-4-TC". Retrieved 25 February 2009.
External linksedit
Wikimedia Commons has media related to Baldwin RS-4-TC locomotives.
Baldwin RS-4-TC Roster
RS-4-TC 60-Ton Locomotives
December 18, 2023
baldwin, diesel, electric, switcher, locomotive, built, baldwin, lima, hamilton, corporation, between, july, 1953, january, 1955, were, powered, supercharged, twelve, cylinder, diesel, engine, rated, horsepower, rode, pair, axle, trucks, wheel, arrangement, th. The Baldwin RS 4 TC is a diesel electric switcher locomotive built by the Baldwin Lima Hamilton Corporation between July 1953 and January 1955 The RS 4 TCs were powered by a supercharged twelve cylinder diesel engine rated at 400 horsepower 298 kW and rode on a pair of two axle trucks in a B B wheel arrangement 74 of these models were built mainly for the Army while a few of them went to the Air Force Baldwin RS 4 TCA preserved RS 4 TC operated by the Mid Continent Railway Museum in North Freedom Wisconsin on June 13 2015Type and originPower typeDiesel electricBuilderBaldwin Lima HamiltonModelRS 4 TCBuild dateJuly 1953 January 1955Total produced74SpecificationsConfiguration AARB BGauge4 ft 8 1 2 in 1 435 mm Length38 ft 11 in 11 86 m Height12 ft 6 5 in 3 82 m Loco weight60 short tons 54 long tons 54 t Prime moverCaterpillar D397Engine typeFour stroke dieselAspirationSuperchargedGeneratorDC generatorTraction motorsDC traction motorsCylindersV 12Cylinder size5 3 4 in 8 in 146 1 mm 203 2 mm TransmissionElectricLoco brakeStraight airTrain brakesAirPerformance figuresPower output400 hp 300 kW CareerLocaleNorth America Contents 1 History 2 Technical details 3 Name designation 4 Original buyers 5 Gallery 6 References 7 External linksHistory edit nbsp Operator s manual for the 1A variant The RS 4 TCs were originally built with Caterpillar D397 diesel engines The Caterpillar D397s were chosen for their high speed and small bore and stroke for quick startup and shutdowns There are two number systems for the RS 4 TCs the 1200 series or the 4000 series The locomotives in both series were the same except the 1200s were built for domestic service and had fixed axle standard gauge trucks while the 4000s were built for foreign service and had adjustable gauge trucks for use on foreign narrow and wide gauge tracks Even though the 4000s were built for foreign service very few were actually deployed overseas the vast majority served in the United States At the end of the Korean War most RS 4 TCs were placed into storage while their World War II counterparts were sold as surplus Today the majority of RS 4 TCs have been sold as surplus and are currently serving tourist and shortline railroads with a few still in military service In the 1980s many RS 4 TCs were rebuilt by railroad contractors into RS 4 TC 1A locomotives The rebuilding included replacing the CAT D397 diesel engines with CAT 3508 engines rated at 500 HP replacing the adjustable gauge trucks with non adjustable trucks and replacing the electrical control system with an EMD system and control stand These are identifiable from the exterior by a single exhaust stack near the rear of the hood rather than two small stacks towards the front Technical details editThe diesel engine is a twelve cylinder turbocharged water cooled four cycle V type engine used to provide power It is directly connected to the main generator The traction motors are axle hung and supported on the truck transoms by spring loaded suspension One motor is geared to each axle through a single set of gears with a ratio of 14 72 The radiator keeps the engine at a proper operating temperature between 100 and 198F 37 7 and 92 2 C Two externally mounted battery boxes one on each side of the locomotive provide ventilated compartments to house the eight batteries Two main reservoir tanks one on each side of the locomotive provide a means of storing air for the air system The main generator furnishes direct current power over a wide range of voltage at various speeds up to 1200 rpm It is separately excited by the exciter generator mounted on the generator frame The generator also acts as a starting motor when the start button is pushed and the battery switch is closed The fuel tank can hold 500 gallons 1892 liters of diesel fuel for engine operation Two fill pipes and two sight glasses one on each side of the locomotive provide a means of filling the tank and monitoring the level of fuel The blower provides forced ventilation for the traction motors which require adequate cooling It is belt driven from the main generator shaft 1 The master controller contains the throttle reverser brake controls and other controls and indicators used by operator to operate and monitor the locomotive and is located in the cab of the locomotive The equipment cabinet contains the automatic switching relays and contactors and is located in the cab of the locomotive Both high and low voltage are present in the electrical equipment cabinet when the locomotive is in operation 1 Name designation editRS Road Switching Service 4 4th military type TC Transportation Corps as in Army Transportation Corps Original buyers editRailroad Quantity Road numbers NotesU S Army 66 1247 1273 4001 4039U S Air Force 8 1274 1276 4040 4044Totals 74Gallery edit nbsp 1954 Baldwin 0 4 4 0 Diesel Electric Switcher model RS 4 TC 1A at the Texas Transportation Museum nbsp Blacklands Railroad RS 4 TC 4014 in Sulphur Springs TexasReferences edit a b Headquarters Departments of the Army and the Air Force January 8 1987 TECHNICAL MANUAL Intermediate Direct Support and Intermediate General Support Maintenance Manual Locomotive Diesel Electric 56 1 2 Inch Gage 60 Ton 500 HP 0 4 4 0 Wheel Model RS 4 TC 1A NSN 2210 01 158 2978 Technical report TM 55 2210 223 34 The Baldwin Diesel Zone RS 4 TC Retrieved 24 February 2009 Utah Rails RS 4 TC Retrieved 25 February 2009 External links edit nbsp Wikimedia Commons has media related to Baldwin RS 4 TC locomotives Baldwin RS 4 TC Roster RS 4 TC 60 Ton Locomotives Retrieved from https en wikipedia org w index php title Baldwin RS 4 TC amp oldid 1190199882, wikipedia, wiki, book, books, library,
