Kato N Scale RDC-4 New Haven (NH) RPO Budd Rail Diesel Car. Kato #1660303, Road #137.
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Motorized with directional LED headlights. Kato Magnetic Couplers included. Decoder (sold separately) required for DCC operation. RDC (Rail Diesel Cars) were introduced by the Budd Corporation in the late 1940's and were heralded as a solution to railroads declining passenger and mail traffic. They could be run singly or in multiple units. They also required no turning at the end of a line and could be operated from either end of the car. Nearly 400 were built and this model is of the RDC-4 RPO (Railway Post Office) with space for mail sorting but no space for passengers.
Budd Rail Diesel Car RDC or Buddliner is a self propelled diesel multiple unit railcar.
About the RDC
The Budd Rail Diesel Car, RDC or Buddliner is a self-propelled diesel multiple unit railcar. In the period 194962, 398 RDCs were built by the Budd Company of Philadelphia, Pennsylvania, United States. The cars were primarily adopted for passenger service in rural areas with low traffic density or in short-haul commuter service, and were less expensive to operate in this context than a traditional locomotive-drawn train. The cars could be used singly or several coupled together in train sets and controlled from the cab of the front unit. The RDC was one of the few DMU (diesel multiple unit) trains to achieve commercial success in North America. The basic car was adapted from a standard 85 ft (25.91 m) coach. They were powered by two Detroit Diesel (then a division of General Motors) Series 110 diesel engines, each of which drives an axle through a hydraulic torque converter, a technology adapted from military tanks of World War II. RDC trains were an early example of self-contained diesel multiple unit trains, an arrangement now in common use by railways all over the world.
Manufacturer Budd Company Constructed 19491962 Number built 398 Capacity RDC-1: 90 passengers RDC-2: 70 passengers, baggage section RDC-3: 48 passengers, 15-foot (4.6 m) RPO, baggage section RDC-4 No passengers, 30-foot (9.1 m) RPO, 31-foot (9.4 m) baggage section RDC-9: 94 passengers Specifications Car body construction Stainless Steel Car length RDC-1/2/3/9: 85 ft (25.91 m) RDC-4: 73 ft 10 in (22.50 m) Width 10 ft 3/8 in (3.06 m) Height 14 ft 7 in (4.45 m) Wheel diameter 33 in (838 mm) Wheelbase 68 ft (20.73 m) Maximum speed 85 mph (137 km/h) Weight (RDC-1) 113,120 lb (51,310 kg) Engine(s) RDC-1/2/3/4: 2 GM 110 diesels RDC-9: 1 GM 110 diesel Power output RDC-1/2/3/4: 550 hp (410 kW) RDC-9: 275 hp (205 kW) Transmission Hydraulic torque converter UIC classification RDC-1/2/3/4: (1A)(A1) RDC-9: (1A)2′ AAR wheel arrangement RDC-1/2/3/4: 1A-A1 RDC-9: 1A-2 Braking system(s) Air Track gauge 4 ft 8 1⁄2 in (1,435 mm

Budd manufactured five basic variants of the RDC:

  • The RDC-1 an 85 ft (26 m) all-passenger coach seating 90 passengers.
  • The RDC-2 an 85 ft (26 m) baggage and passenger coach configuration seating 70 passengers.
  • The RDC-3 an 85 ft (26 m) variant with a Railway Post Office, a baggage compartment and 49 passenger seats. Some had no R.P.O.
  • The RDC-4 a 72 ft (22 m) variant with only the Railway Post Office and baggage area. Some were all baggage/express; others were later modified to haul about a dozen passengers.
  • The RDC-9 (also known as the RDC-5) an 85 ft (26 m) passenger coach seating 94, a single engine and no control cab.

Over the years, various railroads cars had slightly differing capacity due seating types and in some cases replacement of seats with a snack counter or even a galley.

The RDC-1 was powered by two 6-cylinder Detroit Diesel Series 110 engines, each of 275 hp (205 kW).